4l80e 2nd gear launch

- Launch control is a little intemiating to use. 8, stock heads and intake, 7875 billet turbo, 215/219 cam, Walbro 450 pump, 72lb injectors, 4L80e with a single billet converter. 4L80E Wont shift into second gear unless you let off the throttle. JEGS has a great selection of transbrakes for drag racing applications. 73 rear the car would launch as if it had 4. 4L80E Automatic Trans Mount Shifter. 78 The GV is shifted electronically, usually via a drive-controlled switch, but it can also be set up to shift automatically at a pre-determined rpm for fully automatic you sir are correct. the vehicle will launch forward in low gear. If your car should ever start in any gear other than Park or Neutral,. 70. Trending at $199. It has the 2nd gear at 1. Again I'm not sure if its actually 2nd gear or if its 3rd gear starting. 9. Most TH400’s with engine braking rely on the OEM design 1″ wide band. You may have to register before you can post: click the register link above to proceed. 30 rear gear isn’t going to put as much load against a converter in your average 3,000 pound car as a 3. As for praticallity, an adapter plate will have to be used for the TH-700-R4. I lost 0. This allows the engine to idle while the high clutch stays engaged. 0:17. 5s in 2nd. 1 kg (20 lb) weights placed just behind the headlights to eliminate harmonic resonance caused by the The latest Tweets from Sonnax (@SonnaxVT). I have tried searching for information on the 4L80E and I can't find much at all. The AF33 equipped in the 2008 Equinox has is not a true overdrive transmission. As of late, my car has been very slow off the line, WOT from a stop and the car will not shift at all, it just stays redlining in first. At the present time it will only run in 2nd and 3rd gears, and the converter will not lock up. I'm leaning towards the truck because I don't fit in the GTA with a helmet and it's easier to build an axle for a leaf spring truck than for a torque arm car. In addition, alcohol can be added as a fuel for added power gains. The advantage to the powerglide is the torque multiplication or lack of it. This calculator will provide the speed of the vehicle based on the transmission gear ratio, the engine RPM, the tire height, and the ring gear and pinion gear ratio in the rear end axle differential housing. 48 Electronic safeguards prevent over-revving if the wrong gear position is selected. This new 10-speed transmission is modeled in part off the Hydra-matic automatic transmission series. Your #1 source for cutting-edge automatic #transmission, torque converter & driveline parts. Ratios work out pretty close. It shares many components and design features. Or, change input variables (engine RPM, axle gear ratio and tire height) to determine vehicle speed in each forward gear. A 3. If you find that your question is not answered on this page, please E-mail us at questions@phoenixtrans. More info on Getawaycarz. . Look at the final drive ratios for each gear. 60 60' second gear launch) on my blower only launch and 0. If you’d like assistance with your automatic transmission or having issues diagnosing the problem give the Drivetrain expert at Midwest Transmission a call 888-824-2012 we have the answers you’ll need. This has a real advantage for vehicles weighing more than 3500lbs. jmho and you asked for opinions As an example, the powerglide I'm having built has a 1. The 1967+ pattern is P-R-N-D-2-1. No slips were given as this was during a no prep Just by the gearing value, it works out to be right on top of where the standard Tremec 6-spd on a 3. Dennis was a very close 2nd place in his class. I've tried that, and technically it works, so it is a transbrake, but the holding capacity is very low. The 4L80-E is rated to max GVWR of 18,000 (Axle and vehicle dependent) The 4L80-E uses 2 shift solenoids, initially called Shift Solenoid A & Shift Solenoid B, later changed to comply with OBD II (On Board Diagnostics revision 2) regulations to 1-2 Shift Solenoid & 2-3 Shift solenoid. The final ratio is up there with sixth gear on a T56 6-sp manual. there is no way to give a good idea as to the best setup for your goal. Installation . Materials, Size and Weight RPM built the first 4L60E and current 4L80E transmission and driveline in his C5. 1 reason the 4l80e has the 2. The 2014 Camaro has ranked the highest in the Midsize Sporty Car segment in J. The speed limit was 55 when it was built, 55 on the gauge is orange and all the other numbers are white lol. The part I get tickled at is those that believe in "2nd gear start" capabilities. You can paddle shift through all 8 gears seamlessly. yes i have had bad luck with the 4l60 and im tried of replacing them. Alex had some issues that we discovered were due to the planetary losing a thrust washer and causing the transbrake solenoid to stick. When the Th-700R4 goes into fourth gear, your final drive ratio will be 2. Reverse was designated with a transmission ratio of 2. The following information is what I've found out over time and what I encountered installing it in a 1979 Z28 Camaro. but at the same time why would i spend that kind of coin on a trans i cant trust. The C4 is an automatic transmission that is mounted longitudinally. The 6L80 would have big shoes to fill, with legendary predecessors like the TH400, 4L80E and 4L60E transmissions. In the GM 4L80E (THM400 with OD, electronic controls), 2nd gear is still 1. 1992 Chevrolet G30 Gladiator Van i think it has a 4l80e 2. . 5-6 qts. 55 configuration delivering better performance and consistency in racing applications. Car ran 10. 00 eBay determines this price through a machine learned model of the product's sale prices within the last 90 days. Specializing in Racing Transmissions and Valve Bodies You could be enteraining a possible violent transmission explosion if any of the three above conditions are allowed to prevail. But with 2nd gear being 1. First off go ahead and research the stickies, you should be able to get a good start there. but in 1st gear emits a screeching noise that stops as soon as it shifts into 2nd gear Launch shudder felt on hard acceleration 4L80E 450-43LE 4R44E, 4R55E, 5R55E Be aware that the PCM will upshift the transmission to 2nd gear in the Manual Low I have an issue with the automatic transmission, the 4L80E. 12-0. 4L60E Performance Specs. We really want reverse and 1st gear at the same time to do this. No 2nd or 4th gear. If you want your car to be "fast" and have a high top-end speed, you'll need high (tall) gears. 87 first and 4. Density altitude was 3500ft. Now that I'm contemplating switching to a 4L80e, which has a 2. 64. 4L80E 2nd & 3rd gear only The trans has two external coolers, one in the radiator and one in front of the radiator. These products are shortlisted based on the overall star rating and the number of customer reviews received by each product in the store, and are refreshed regularly. 48 1st gear, I'm afraid I may reduce my 1st gear final ratio too much. This is a non-quoted item and the price fluctuates; we have to get pricing each time an order is placed. S10 / Sonoma It has a great low gear for launch and OD so the engine isn't screaming at modern highway speeds. RPF takes everything into account, from the crankshaft to the tires on the road. 78 first gear in will slow you down even more. Transmission For Dipstick GM GM type 4L60/E 700, TH-700R4 My civic idles at around 750 RPM. Compare the most helpful customer reviews of the best rated products in our Automotive Replacement Transmission Solenoids store. The THM200 family has more like a 2. Automotive Recalls and Technical Service Bulletins for 1993 Chevy Truck K 1500 Truck 4WD V8-350 5. A 4. Are you experiencing whining noise when accelerating your car to high RPM speeds? This seems to be a common problem with many cars. This partially offsets the earlier gain. Second gear launch and burnout worked fine. Experience plus Quality parts equal superior quality and long life Automatic Transmissions. 23’s. It's also very close to where the taller Tremec variant on the HC is, with 3. 6L80E @ 2. However a lack of 12V supply can happen anywhere from the battery-ignition switch-fuse block- harness- connector- internal harness. It tells you how many revolutions the crankshaft turns to move your car one foot. 40 2nd - 1. When the truck downshifts to 2nd gear on an interstate on-ramp, the power is quite impressive. Years of research and testing have enabled ATI to design optimum oil circuitry for all popular transmission applications. Look at a BMW E30 and try to tell me it doesn’t look similar to a Fox Body couple. However, I know that high RPMs while at the catch point wears the clutch down pretty hard. Install a TH-700R4 with these existing 3. The u joints seem fine, rearend is still pretty tight. 72% less RPM drop between 1st and 2nd than the wide (stock) ratio gear set. First logical conclusion would be just apply the direct in 1st gear. When engaged, the transbrake applies forward/low gear and reverse at the same At the track during testing. We start with only late model cores for our performance line and application transmission is manually put into 2nd gear while descending steep grades, etc. This is a 95 3500 series w/5. 1. I'll be at LS Fest West next weekend, stop by and say hi. 55 rear Th350 will grab 1st-over like 4. 74 1st gear to the THM350's 2. These will have a 2. Are you facing 4l80e Transmission problems? where you can only shift into reverse or second gear then you might be in limp mode. 2nd time trial pass, the burn-out was terrible, didn't get the tires completely dry, it took two hops off the line, but still managed a 12. We have built them for applications ranging from heavy towing vehicles to 1800+ HP street/strip cars. The Advantages And Disadvantages Of Straight Cut Gears. Car has not run for many years. Listen for any rumbling, growling or mechanical metal-to-to metal noise in each gear just after it shifts. 46 first vs 1. It shifted fine. the rear tires upon launch. Even the interior screams the ’80s, which is awesome because back then interiors weren’t cluttered with fancy junk. speed as you go through the gears. I just got done air checking the over run clutch pack and overdrive roller clutch sprag, both are working. 3L TSB (Technical Service Bulletins Chevy Truck K 2500 Truck 4WD) and Automotive Recalls. 02 on my (1. When the engine RPM's are low and the truck is in overdrive you can make it shudder by giving it a bit more gas, but not enough to make it shift into another gear. Tci's 700-R4 Fix. Gear Ratios. Looks like he has a trans brake with a rev limiter for the launch and a 2 speed tranny, so only one shift and quickly back past the shift set point of the light in high gear making it look like it was on most of the time. 2L monster's torque, I conclude that 1st is rather academic. When i take off i have to get up to about 25-30mph and let off the gas or itll just ride 1st till no end. 28% as much RPM drop as the wide ratio gear set. 18. I think I hated my TH400 because it wouldn’t kick down properly, 1 gear would shift at 5400 (should be 5800) and second would shift at 4500 (unless you held it). I also have my 1st gear set up to spin in my ACR and win a decent number of races, even with AT on when Im lazy, the 60 foot is actually better with some spin on this car. 56s (simple math to get total reduction). TREMEC TKO 600 Advice. 74:1. It’s the sign of a loose ring gear, which has a lot of play and slop because the ring gear is not supported in any way. This does not, it uses the entire 2nd gear clutch pack to give the same capacity and strength to engine braking as it does acceleration. We give you a builder's guide on everything you may need to know when it comes to selecting a T56 for your own GM project, from putting it together to upgrades. Since You have to admitt the tuning capabilities have improved substantially from that of just a few years ago. Standard gear ratio is the OEM 2. 16 seconds from my 60' (1. 3) will still be able to access 1st manually with the gear lever (eg if I know that a rapid pull-away will required). Nov 29, 2017 As more and more of these newer cars and trucks start making their way into the Bowler 4L80-E Performance Transmission Package 2 more gears so what is done is a custom 1st & 2nd gear ratio, and a modification to the  Mar 21, 2018 2004 Chevrolet 4l80E Help - Evening , I have been working on a customers 2004 Chevrolet 2500HD. Bellows Falls, VT Typical 3 speed transmissions, use two ringgears, two planetary carriers, and a common sungear (all one piece, but long enough to mesh with both planetary carriers. 10 gears to get a good launch with the advent of these new 6 speed auto He did switch back to a 5-speed, for the driver involvement issue and the fact that he couldn't get the car up on boost for a launch (converter issue, not a trans issue) The TH400 can be upgraded with a gear vendors overdrive unit, or you can use a 4L80E which is essentially a TH400 with an overdrive. Again it over-runs once the trans shifts to 3rd. The 4L80E in my camaro seems to work pretty well now - with the exception of it starts off in second gear when the lever is any position other than 1. Introduced in 1996 as a 1997 model, the TJ reintroduced the circular headlights the classic Jeep models had been known for. you sir are correct. com ✓ FREE DELIVERY  4L80E - Level 2 Transmission with Torque Converter Shift Solenoid Extra Capacity Second Gear Clutch Assembly Heavy Duty Forward Clutch Hub by 1 of 5 master techs from start to finish and DYNO tested with converter the equivalent of  shift down into 2nd gear or 1st gear. 8/4l80e combo but I can't decide which one. Get 4T65E transmission rebuilding tips, 4T65E troubleshooting help, 4T65E technical service bulletins, 4T65E diagnostics and 4T65E technical information from TRNW. All in all it will probably be best. 80 first gear and a 1. You can also now calculate when using different transmission gear ratios, like in first gear or in overdrive. GMC Sierra 2000, Valve Body Kit by Pioneer Automotive®. The result are faster and TCI 302820 EZ-TCU Electronic Transmission Controller for GM 4L60E 4L80E 4L85E TCI 302820 EZ-TCU $573. 1st, 2nd, 3rd, etc) the sooner the vehicle will achieve it's given gear's maximum speed. if has code for this change out switch, no codes: its guess unless you can see data on DOC or equivalent. 14207. We also found out testing that the 2nd gear launch just wasn't working for her combo. Pulling away in 2nd (manually, GPIO unplugged), is not laboured, still brisk, but most importantly, gives the car even more of a "just gliding away" feel. 3speed Automatics and Gear Vendors Standard AutoDrive Electronics The single most useful tip in ratio splitting through 6 forward gears is to use the AutoLaunch feature. 10, or 4. 04 at 137 today. 5psi and then its at 20psi within . Drill the spacer plate . Lots of metal in the case. I have a 93 chevy C2500 3/4 ton it has the 4L80E in it and I have no knowledge what so ever on electric trans all I see on the tranny is it has the wiring harness coming out of the side and a rubber hose hooked to a plastic grommet on the top of the tranny and the shift lever linkage I am driving and the RPMS are 2500 @ 30 MPH which I don't know if its first or second gear it is stuck in Re: 4L80E shifting problems: Rich: 9-11-06 : Hey guys I have a 92 K2500 4x4 with the 4l80e. Reverse parking and neutral works fine but only 2nd gear forward. ATI compu-flow valve bodies provide the most accurate and efficient hydraulic controls possible for automatic transmissions. 3psi launch, 18psi 1st, 16psi 2nd, 14psi 3rd gear. Should be around ~750whp in 3rd gear but we're out of injectors and still running the factory driveshaft. The ultimate AOD tranny would be a computer-controlled 4L80E with a GV unit and paddle-shifter. We will be seeing a lower first gear compared to the prior 8-speed from GM, 7th gear being 1:1, and 8-10th gears being overdrive speeds with 10th being a ratio of . good test to try is with engine OFF, disconnect transmission harness at right rear, and start engine. If i let off itll shit right into 3rd and then 3rd shifts fine into 4th. 4. 2nd Clutch Inner Seal Installer Protector GM 4L80E Non-stock item, manufacturer drop ship; please email service@toolsource. A single gear can be chipped or worn down, allowing only a noise in that gear. You may have to register before you can post A 4L80E defaults to 2nd gear when it has no solenoid function. 56 gears. It will never downshift into first gear, regardless of speed or gear selection, even dropping the transmission into 1. 94 with my old 306. At first, when I was getting slips, it was making 3psi at launch and 14psi 2 seconds after the launch and held that to the finish and ran a 6. WATER-Mist Injection recommended to reduce power losses from heat and high intake air temps (IATs). The TCC switch can be switched on at any time. I have always been told that turbo motors like load on the engine and I am looking for 3:23:1 gears for a Chevy 12 bolt, though having a tough time finding them anywhere. Please contact us to confirm correct vehicle fitment and usage. Cause: can be NSBU switch on shift lever. Here is a wiring diagram to help you see how the system works and the location of the gear range sensor. I Changed the gear lube ever 20k-30k miles ran redline mtl with 5. 84 to 1 first gear, 1. 48 second) on my nitrous launch with the stock converter. There's something about the longer days and the warmer weather that pulls out of our winter season funks and gets us feeling motivated to take control of things and drink up their lives for the much better. I am guessing this is an electrical problem. Electric Sandrail acceleration test in 2nd gear with passenger. i have done a lot of boost launch's with this stock 4l80 and it has taken the abuse and kept on going. We'll start with the key to the whole system: planetary gearsets. The car will really launch in 1st gear but when it hits 2nd it will puke. How do you figure the auto would be just as fast or faster?? It isn't in stock form. Even at just ½ throttle it performs, and at full throttle is just plain awesome. It has a 0. You get a feel for how much power the 5. The Chevrolet Silverado, and its mechanically identical cousin the GMC Sierra, are a series of full-size and heavy-duty pickup trucks manufactured by General Motors and introduced in 1998 as the successor to the long-running Chevrolet C/K line. I then checked the wiring from the computer plug to the trans plug and input sensor and they all rang out for continuity. Hurst’s latest, the Elite Series line of performance products for modern muscle cars, includes not only their world famous shifters, but also exhaust systems, wheels, springs, floor mats, and graphics. The 4L60E transmission is designed to handle a max engine torque of 360 lb-ft. If its apart there are several free mods that can be done to improve the shift quality and lubrication. Our Engine Compatibility tool is to be used as a guide only. We have dominated the annual polls at CompetitionPlus. GM 4L80 and 4L80E. The 4L80E has proven reliable like it’s predecessor. 91' Syclone 370/4L80E PT88 166mph 1/2 mile I would assume it would be close to stalling in 4th gear at only Use this calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. Tire chirping shifts when you want it. 1@139 by leaving in 2nd gear. should go into reverse and in forward would be in 3rd gear all the time. All you have is a steering wheel, pedals, gear shifter, and a basic radio. The 4L60E naming also indicates a lot about the transmission. Burn-Out, Staging, and launch Procedures. A reduction in ratio in 1st gear, given the 3. * DO NOT SHUT OFF ENGINE IN THE TRAPS * Billet Valvebody There are a lot of options in automatic transmission control. GM Bearing design Front Planet Hub for complete rollerized gear train . 48 60' first gear launch vs consistent 1. 715whp / 582wtq at 20psi in 2nd gear. A 6L80E has a 4. OPERATION TIPS For Muscle Cars and Street Rod Trucks and Street/Strip use. Everything is fine, just makes this weird noise when accelerating from 1st gear, the sound becomes more faint after 1st gear, but there is still a slight sound of a whine in 2nd,3rd. 11. The car is in 2nd gear only, from what I have seen it is in safe/limp mode. Gotcha, all good points. In other words the close ratio gear set will only have 88. Thanks to the efforts of manufacturers past and present, lockup torque converters are experiencing a resurgence in the world of high horsepower drag racing, and to learn more about the history and inner-workings of these controversial units, we reached out to some of the brightest names in the business. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you’ll ever need for your modern OBDII vehicle. Your not missing a top gear, most cars have a direct drive in top to the rear axle, your just missing one in between. You will cross the line in 3rd gear, but again, the 6L80E has much deeper gearing to compensate for the taller tires and gears. 4L80E TECH NOTES Code 22 and no fourth TPS faulty or misadjusted—replace TPS & raise minimum TPS voltage to . If you do not know this ratio, you can simply put in 1. It's been a very long wait but I finally got the stang down to a real drag strip . They both made it through Drag Week 2018 last year. Below is a list of buttons that we have added to navigate directly to the page of each problem. 33 if available with the new 6sp, then my final tall gear would be equal to a 4 sp with 4. The Jeep Wrangler (TJ) is the second generation of the Jeep Wrangler off-road and sport utility vehicle. provide a controlled slip as early as 2nd gear to a rare full apply of the clutch during specific highway cruise 3 mode bump box that reads the paddle shifters for the triggers. 3rd gear was difficult in sub zero temps and became very stubborn in -20 to -30 weather until the fluid warmed up. In this article, I present some of the possible causes of whining noise while accelerating. The "low-gear" (2. This page is meant to give a broad overview of the most common problems with the 2009 Chevy Equinox. The necessary fuel economy is achieved through a very modest 2. I underwent a complete trans build early on, found my 2nd gear pack was toasted as well as a couple clutches throughout. 2nd gear – sol A=off sol B= ON. Too much rebound and the shock will transfer the weight back However, as soon as the engine reaches operating temp, the transmission acts up. Lots of problems with the 2nd to 3rd shift hanging up. Once I reach the catch point, the revs drop and I get a nice smooth smart. If you want your car to be "quick" and launch hard with a super quick 0 - 60 MPH time, you'll need low (short) gears. well, this morning (coldest all summer @ 50F), my car jerked TWICE when going from 1st to 2nd. Problem started with it going into limp mode (sticking in 2nd gear) when I shut the truck off and restarted, then it would begin shifting again, with one weird exception: When going from 3rd to overdrive, the tach would rev up to around 4500 rpms and then it would drop into overdrive. 364 and 4l80E @ 2. BDE might have a 4L80E adaptor available now The positive ratcheting function won't allow you to over shift and miss a gear at that critical moment, along with the reverse lockout and neutral safety switch that meets NHRA/IHRA safety rules for those weekend grudge races at the track. 8L diesel crate engine conversion. It’s just along for the ride. 88's won't be too much first gear for the launch we actually got alot done today, fuel lines and nearly all of the hotside, we just need to mount up the wastegate and then finish the downpipe and that is done, couplers are on the way for the cold side, then we are going to be tackling the intercooler next. Re: 4L60E clunk when stopping The splines on the slip yoke in the trans were nice and oily with atf. 5" 10 bolt rear, but the closest options I can find for the 12 bolt are The 700R4 is a good transmission for a retrofit into an older car. R&R. Provides 35% more 2nd gear The neutral safety switch is a safety device that only allows you to start your engine when the automatic transmission is in either Park or Neutral. 42s has a 13. The numbers can be deceiving in that a high gear ratio has a low number, and a lower gear ratio has a higher number. This calculator assumes you know the vehicle's transmission ratio. This valve body allows transbrake application in both first and second gear ranges. Classic Industries offers a wide selection of 1968 Chevrolet Camaro parts, including 1968 Chevrolet Camaro interior parts and soft trim, 1968 Chevrolet Camaro exterior sheet metal, 1968 Chevrolet Camaro moldings, 1968 Chevrolet Camaro emblems, 1968 Chevrolet Camaro weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. 2nd gear oil is still applied, and so is Drive oil fed to the forward clutches An important additional benefit of this design is the extremely strong engine braking ability. 48 final drive ratio. Aug 9, 2009 #3. 69 at 100. The video also says that when the transmission fluid gets low the clutches can start to burn or wear out. D2 launches in 2nd gear and D1 shifts through the entire range. The trans is a rebuilt and I just put it in. With a 12,000 pound very-high profile trailer behind the 6-liter, he will be in 3rd with 4. I hope the 2. 086-. I just took my 4l80e for its first test drives. I've played with the Transmission ICF quite a bit, when I was running a 4L80E. Using a second 16 - 20 gauge wire, connect the other side of the push button to a placed in manual low gear. The slip yoke in the middle of the driveshaft was a bit dry, but didn't feel sticky. 80 1st Over - 1. At Jake’s Performance the 4L80E is our most popular transmission. 7 to 1 overdrive ratio making even 4. My 95 Silverado 2500 serieswith 4L80E transmission is stuck in second gear. com is a massive internet community hosting over 100,000 members and growing each day. Is there provision within an 06 C6 A6 w/6L80E to do a second gear start (SGS)? If I change the 1/2 shift table to 0mph so that it's at 2 right away, what do I do with the 2/1 downshift table? 4L80E 2nd Printing Before & After Service Complaints. Yes a Posi rear will apply power to both rear tires helping to launch the car. if you Engine RPM, or the speed at which the engine turns, can be calculated at any speed given the vehicle's tire size, axle ratio, and final transmission gear ratio. 16:1. The Performance Automatic street strip valve body is designed for everyday street driving and weekend trips to the drag strip. Ford & Lincoln automatics to about 1958 started in 2nd gear too but were manually selectable into first or by “matting” it. was able to get a 1. I dropped off the truck this morning and received a call a couple hours later that two separate techs, including the one I rode with last week, took it out and determined it was the transmission downshifting from 2nd to 1st present when hard braking, and the annoying answer that this was normal and working as designed. 03 1st gear and with 3. The 6L series transmissions had a lot of complaints about shift quality. 52, so that will help acceleration as well. I am planning to get the GenT Turbo supplied and fitted to my car in a couple of months and I need a strong auto. ) By changing which gears are rotated, and which gears are "held", we get two different gear reductions (1st gear, and 2nd gear) a reverse, "gear" and a 1:1 ratio (third gear). 84 Ratio 6 Pinion rebuildable front Planet and sun gear and GM 4 pinion rear planet w/ Wide ring gears; Designed for Low geared vehicles 3. Will the 2nd gear launches place more load on the TC or will the clutches be the weak link? 4l60e, no second gear I drive a 2002 Pontiac Firebird WS6 w/ AT (unfortunately) with 136000 miles on it and I went to a transmission shop today to get a problem diagnosed. I would still like to get the overdrive RPMs down though. The 2004R has a 2. In this article, we'll work our way through an automatic transmission. So reverse has the direct and the low/reverse applied. I need second opinion on what gear my Saginaw 3 speed manual transmission is in. RPM built the first 4L60E and current 4L80E transmission and driveline in his C5. info1 Shifts: Complaints/Corrections 3rd gear start and bind in “1" clutch pack is the problem. so i figured id try my luck with a stock 4l80 transmission and so far so good. A transbrake is activated by a driver-controlled switch that connects to a solenoid mounted on the transmission. 8. The purpose of the neutral safety switch is to prevent the car from starting while in gear, which would cause it to launch forward unexpectedly. So 65 is already working the truck pretty good and you have no passing gear, if it drops to 2nd its really screaming! Should be pretty nice to run 2nd over to pull a grade or pass a semi. Although having a higher ratio 1st would get you going and might increase your 60' slightly, you're going to top out that 1st gear pretty fast, and spreading the 1-2 gears out that far (2. The early shift pattern is P-R-N-D2-D1-L. I know that this ratio is available in the much smaller 8. set first gear to 1500. I used a break out box to see if it was trans at fault but its not. There is less of a difference on the 80, which means less RPM drop from the 1st to 2nd gear change. I added more grease and exercised it some. Last time out was over 10 years ago!Needless to say I was a little rustyPrevious best back then was a 13. 4T65E Common Problems. 78 launch ratio. And yes, the 4l80e's 1st gear ratio would make accelerating from a stop more dfficult than the 4l60e. A properly driven stock M6 F-Body will always be faster than a stock A4 F-Body. It also defaults to max line pressure. Welcome to the Frequently Asked Questions (FAQ page). I took delivery of a 2016 Sierra Denali (5. This is similar to somebody trying to start pedaling a ten speed in 10th gear versus 1st or 2nd gear. Plus, the truck will never shift higher than 3rd gear, it only shifts between 2nd and 3rd, never using overdrive regardless of speeds at 60+. 0, 3rd=. If the 2nd gear band servo doesn't release quickly enough when 3rd gear applies, the 3-4 clutch pack will burn up. Precision International is pleased to bring to you another tech tip to help you at the work bench! In this edition, Precision's own tech advisor John Parmenter gives an assessment on the loss of I have repaired the 4L80E on my tow truck, I have to do that almost every year, the last time it ran perfectly but when I push the pedal to the metal, it shifted from 3rd gear to 2nd and stays on 2nd gear until I turn the ignition off and start again. The M6 puts down more power to the wheels, has better (and closer) gear ratios, a higher rear end ratio, can launch harder, and weighs less. If you keep the 4L70E torque management is a must. Just my armchair observations from the sideline, but putting the 2. This was the last model year of the first generation Equinox. The gear ratios were brought a little bit closer together in 2007, which led to improved shift feel. Suspension updates include; adjustable QA-1 shocks in the front, Bilsteins shocks in the rear. 06 ratio of the 4L65e wasn't a bad idea either, since traction has always been a problem with the APS TT. Scroll through the list of popular transmissions to find yours. The process of converting the stock Jaguar XJS coupé into the H&E Convertible included the post-production removal of the roof, cutting the body in several sections, the addition of steel reinforcements behind the driver's seat, and 9. Fluids. 75 low gear, so less of a canyon to jump in getting a smooth 1-2 shift. 4l60 Transmission Spring and summer is a time of change and new beginnings. This is common with numerically high final drive Featuring several advanced design benefits, the high-quality Performance Automatic Close Ratio Power Planet kit PA70418 changes the 1st & 2nd gear ratios of GM 700R4, 4L60E, 4L65E, 4L70E transmissions from a "wide ratio" 3. While in 2nd the intermediate sprag holds. gear can carry a larger load seeing as it is i have a 96 silverado i replaced the transmission in do to the dtc code p1870 and other problem and i am still gettting this code after taking the truck on the highway today it kicked the code after driving about 8 miles on the highway i cleared the code truck ran fine half way home till we hit about 45mph any clue what the problem could be ? could the pcm need flashed for the new trans ATI valve bodies and gaskets for drag racing and high performance use. 4th gear – sol A =on sol B= off. By using the two speed design, the transmission can utilize the transbrake in second gear, allowing the car to launch a much higher starting line ratio than a powerglide. Apr 7, 2017 able to do that without wiring anything in but when I do this I launch in 2nd gear it does not downshift back to first, is it bad on a 4l80e to launch in 2nd gear?? Mar 1, 2016 GM Drivetrain & Suspension - 4L80E 2nd Gear Starts after rebuild - Been a long Throttle engine, rear tires start spinning really fast then I am  As with all Jake's Performance transmissions they start with a select core that is 4L80-2FMTB3, Full manual shift with D3 brake (allows 2nd or even 3rd gear  Feb 11, 2014 Page 2- Sloppy 4L80e "transbrake" Transmission - Hutch's Transmission Service. i have done a lot of boost launchs with this In the case of rev limiters, Holley’s Dominator EFI system is equipped with three of them and each has with four cutout options. I think from a dead stop the 60 will launch better, but that shift from 1st to 2nd will kill ya if you don't have enough RPMs in the engine. 44-1. Otherwise, 2-4 band is worn out. In the old Ford Cruise-O-Matic (BW trans), 2nd (D-2) gear start meant 1. The 4L80E is the descendant of the “Ole Reliable” TH400 transmission. 70 to 1 overdrive ratio. com 7 years (2007-2013) in a row, by a large margin, for the best message board of the year awards. e. Both clutch drums rotate safely with the engine without the fear of an explosion. 76 low gear, the company’s custom E9310 gearset (part number HP7469L, which includes a forged carrier housing and ring gear, 9310 pins and new washers and needle bearings) and one with 4140 gears (part number HP7479L, which includes an OEM carrier housing built with new washers and needle bearings). 56 to 1 second gear, 1 to 1 third gear and . Too stiff of a spring and/or too much compression in the shocks and the weight won't transfer the way in which you would like it to. 10 gears. can also be other code issues and or mechanical problems inside. With the 7. stock torque converter stall speed? Discussion in ' what gear you are running as to what it is actually stalling at/slipping. 1's. 48. To start viewing messages, select the forum that you want to visit 3 speed, 8 pulse hall effect, 3. Chevrolet Impala Transmission Pressure Control Solenoid Failure May Cause Erratic Shifting - 1323 reports. 4L60E - 4L80E Trans Brake Operation. speed. please check on the individual parts description to ensure this suits your requirements, if you are unsure, please contact the EMA sales team. Over Flow-Catch Can Instructions. Correspondingly, the 6L80E with 3. Included is a primary rev limiter along with two limiters that can be set up based upon a programmable input signal (for example, a burnout limiter, or a launch limiter). , the shift lever position), I just finished installing my new transmission from jackstransmission. Proprietary design features instant brake apply and release and the fastest 2-3 upshift ever available with the OEM casting. It appears to me that it is a shift light. 1st has the forward and the low reverse applied. 00 second gear, so my ratios with the GV will be: 1st - 1. 3 is really making at higher speeds. For sale here is a 2007 Chevrolet Corvette Z06 2LZ package, Velocity Yellow exterior with black perforated leather interior, Bose sound with Navigation, heated seats, all options available for the model year and only 16,000 miles. 73 gears would leave him in 2nd gear more often than not. Graph RPM vs. There have been no recalls issued on the ’09 Equinox, which is the second recall free year after the 2008 Equinox managed to make it without being called in by the NHTSA . Something I have left out (not on purpose but on accident) is in neutral it does creep forward when throttled. A bad "B" solenoid will kill 3rd gear and OD. YellowBullet. change and can make pulling away smoothly or getting a decent launch difficult. It is lower than all other automatic transmissions as you take off in a gear that is typically between 1st and 2nd gears in a typical 3 speed auto. Megasquirt Support Forum (MSEXTRA) 4l80e Autoshift but with 2nd Gear Start if Shifter in D2. Note: I did not test the shifter on a pwm TCC type transmission. com for cost and lead time before ordering. Number 77284-K 700R4 or 4L60E PATC-SONNAX Power Gear 2. 78. 00 as this is the typical 4th gear ratio of most 4 sp and 5 sp manual transmissions. Automatic shifts in the drive position and will hold 1st and 2nd gear manually (C4, C6 and AOD Hold valve bodies only). Notice with your rear gear in 1st-overdrive how low you would have to go in a new rear gear to make 2nd gear have that much torque multiplication. Other than that it seems to shift fine, doesn't make any horrible noises or anything. felt the hard shift from 1st to 2nd gear. The appropriate flexplate, crank adapter and required bolts are also included so a standard GM converter with a small bolt circle drops right in. 46 gear ratio. Transbrakes allow a full throttle start off the line and full fluid lockup when you push the button to release the transbrake. 73:1 rear end ears, so you can now have your stop light fun. I should also mention that the transmission was a 3 speed which utilized gear ratios of 2. 3. If running an auto, a better plan is a 4 speed for sure, and run closer to the same size tire for track or street. 11 gears great on the street. 23 because it is harder to get the car going with the 3. For sure has fourth gear. The reason he dont have 2nd gear can be for 2 reasons. 55. It also seems to do it on hills on the highway. Confirm clutch is working by noting a drop in engine RPMs. For instance, a 6L80 will max out at a little above 30 MPH in 1st gear, but will achieve that speed sooner than in the 4L80. This close ratio 700R4 gear set will have a 11. A bad "A" solenoid will kill low gear and OD. The GM 700-R4 is one of the most popular overdrive automatic transmissions used in street rods. The 4l60e is the trans with the larger rpm drop during upshifts, not the 4l80e. This calculator will graph RPM vs. com! Hughes offers 4 versions of this kit, one with 1. Are you tired of shelling out hundreds if not thousands of dollars at your local mechanic? Looking for some cheaper parts for your car that you, your buddy, or even your mechanic can install? It wasn’t so much the torque the engine developed as it was the low ratio of first gear, which was necessary in a Hydra Matic because the transmission did not use a torque converter for torque multiplication. Transmission Control 4L80E increases line pressure to reduce slippage and adjustment to delay TCC lockup to decrease 'hunting'. Radial tire cars in particular, when running on a flypaper-type of racing surface with 3,000-plus horsepower, can’t calm their combinations down enough with a I was wondering about the 4L80E package for $7500 (that was the price one year ago, I don't know about the price now). As gear goes up, you shift earlier into a higher gear thus losing some mech advantage sooner. Transbrakes are used specifically for drag racing. The scope creep and ADD with my C1500 and my Trans Am is real. 4L80E burnout starting in 2nd gear. 75) planetary gear set offers a 11% increase in 1st gear over the stock ratio. 06:1 First gear for launching from a Cars that don’t have the power to make use of the 1. so after ive been on the freeway or drove for awhile I have a hard 1 to 2 gear shift. If you are maxing the 60' times as is, I'd caution the gear change. In this instance, it makes sense that if there is just a little issue with a clutch under normal pressures, that the modifier simply helps things along. 73-4. 78->1. 91 axle is on its 2nd gear. The 4L80E uses three types of sensors: Temperature Sensor, used to determine TCC lock-up, 3 Pressure Switches (not that these are sometimes called 'transmission pressure switches, TPS, but they should not be confused with the Throttle Position Sensor), used to determine the currently selected gear (i. 63 to a "close ratio" 2. 65 60ft and 10. Transmission Controllers. Hey guys, hoping someone can help. 48 Now it is currently launching at 13. Not too bad for an auto. Even if they don’t know what the sound means, many drivers have heard the ring gear on their planetary gear set CLUNK as the car is pushed around the pits. If it does BTE Two Speed TH400 Transbrake Valve Body. The name switch pitch comes from the vanes (stator blades) in the torque converter being able to change their angle (pitch) in order to reduce friction (force) and get the vehicle moving. 67 OD Either way this does makes the 4L60E a true close ratio tranny without that nasty 1st to 2nd RPM drop that we experience. Even at just ½ throttle it performs, and at full throttle is just plain awesome. 86 was the smallest low gear option available. If you are purchasing for the first time, we recommend our Kit Builder to order the correct controller and accessories. 11 rear gear and a 30" tall tire, should be able to click off mid 8's in the quarter and have a top speed of around 215mph. 10. 5 seconds after launch and holding that to the line. 46 for 1st, 1. if the GV was only $1500 NEW then maybe i would compromise and go with a shittier first gear and OD ratios. Has anyone any experience with 2nd gear starts they would care to share? Building another 6L80E and thinking about raising my TC rpm's slightly and testing 2nd gear starts instead of 1st. Release time is tailored for pro-tree applications. To confirm the issue use this guide to test through the sensor (neutral safety they used to call it) This valve body allows transbrake application in both first and second gear ranges. Learn about this problem, why it occurs, and how to fix it. 70 axle, on its 1st gear. 7L 4L80E High Line Pressure Shift Lever Shake/Nose in 2nd Gear The 4L80-E (and similar 4L85-E) was a series of automatic transmissions from General Motors. The transmission levers appear to be near vertical, although the one to the rear may be slightly angled back (very slightly angled). Then I usually have ALL the low gear I need for said STEEP grades to launch on. 84/1. 64 OD would have been real sweet in this day and age of high gas prices and compares favorably to the 200R4's . Of course an overdrive transmission bring the final drive back down for the best of both worlds. The shift solenoids are working as they should. 58, 2nd=1. It is possible to overdrive the high gear drum at or beyond its burst speed (beyond 15,000 to 18,000 RPM). I've decided one of these two is getting a turbo 4. I also have been experiencing a slight vibration and upon tear down of the Paramount 8. My vote is the 4L60E or 4L80E Search for Gears Magazine Articles Transmission Type: The main reason that performance people flocked to the THM700 is the 3. Would a transmission flush fix this? or is it time to replace the transmission? edit: took it to a highly rated Angie's List transmission shop. 093" for 2nd & 3rd gear and . First pull the car into the water, with a 3 speed transmission, put the car in 2nd gear, get the tires spinning then shift into high gear, this is preferred, but you can start in 1st shift to 2nd then to high gear, get into high gear as soon as possible. I won't bore you with all the details, but I did manage to get to the 5th round, which was the quarter finals. Such noises indicate problems with the individual planetary gears, input shaft or interior transmission bearings. 64 60ft. Using a Scan Tool for Transmission Diagnosis. 100 for 4th. 48) will really bog you down once you hit 2nd with the larger rpm drop (pulls you out of 2001 GMC Yukon Denali Performance Transmissions. 3 V8, 8-Spd, 3. 67:1 OD ratio for low highway cruise rpms and a nice short, but not too short 1st gear (which wont lead to huge shift extension between 1st and 2nd gears) of 2. Sonnax 2. will not shift into 3rd just slips. Power’s Vehicle Dependability Study (VDS), a reliability study which asks original owners of 3-year-old vehicles how dependable their vehicles have been during the prior 12 months. TCM930B Second gear launch with 4L80e Transmission you should have no trouble as 2nd gear in most trans are close to what a glide 1st gear is 07-07-2014, 02:08 AM I am calling the gear range selector switch, these had a big problem going out and would cause the problem you are describing. for someone like me who doesn't have any desire to put out more then 400-500 hp and am more interested in street cruising a trans with a better first gear and better OD ratio is a better choice for me. I was going to wait till spring and finish up a bunch of small things but decided to go down with my nephew. The launch on my truck is pretty soft, so I know it is being limited then (even w the traction and stability control off). 42s in 2nd and 3rd gear closely resembles a 4L60E's 2nd and 3rd gears with 4. BTE's all new billet aluminum valve body kit contains everything needed to convert your TH400 transmission to a two speed unit. Information that addresses safety, reliability, performance and comfort related problems with Chevy Truck K 2500 Truck 4WD V6-262 4. We take our Third Generation 1983 Chevy Camaro and upgrade its current transmission to a Phoenix 4L60E transmission to a once and still best thing to have on our ‘80s overdrive transmission. Pioneer's line of transmission service and repair products covers the automatic transmission market from A to Z, from Allison to ZF. So maybe that suggests good things, if you believe the gearing of the 6-spd HC is the ticket. 2 speed powerglide setups are pretty common on the faster automatic drag cars. 1st gear – sol A= ON sol B= ON. 08 rear end gears. 74 (think PowerGlide low gear), that's a huge ratio gap to fill, one way or another. Pinion Angle. Need to come up with a combo that gets the most out of 2nd gear I would think. And why not, you might ask-they have a 3. As an example, with a 3. It’s final gear ratio is a 1:1 direct drive ratio. Boy that real tall . 07 low gear for a better launch. I am having the same issue. Miller says, “The gear ratio in your rear end determines how much load you are putting against the converter. I suggest always launching a 4L80E in a gear other than OD so that the . 06/1. 2nd gear in a 6l80e is close to that of 1st gear in a 4l80e. GM Oil Pump Assembly Remover-Installer 4L80E Non-stock item, manufacturer drop ship; please email service@toolsource. 46 for 2nd, and 1 for 3rd. 8 with 250 - 300 hard passes it was found that one of the thrust washers under a spider gear was gone. The number is a high stop like a torqueflite. Mine seems to do it mostly in overdrive. The manufactures must have worked out your engine was powerful enough to pull it through just 3 ratios whereas other models needed the extra in between. 3rd gear – sol A =off sol B= off. Look at the difference in the numbers between 1st and 2nd gear on the 60 vs the 80. Intermittently Neutrals on Launch 8L45/8L90 Harsh Shifts Delayed Engagement, Drops Out of Gear at Stop Signs 8L90 Hard Downshifts, Especially the 3-1 Shift, Possible Flare/ Bump on the Upshift or Downshift Applications, Accelerator Pedal Position Sensor Updated Design, Shift Point Changes 4T65E P0742 Set, Chuggle/Surge During Deceleration When Products. Then we'll see how the transmission is put together, learn how the controls work and discuss some of the intricacies involved in controlling a transmission. This calculation is used to match oversize tires with new ring and pinion gears to obtain the desired engine RPM at highway speed. 48/1. They use the same gear ratios. Not knowing what tranny, 1st-2nd gear ratios, tire diameters, trap speed, etc. The concept of using a transbrake is to produce the fastest possible acceleration from a standing start. 56 and the 4th gear OD at the stock . If you just want an extra gear, I agree with the previous posts. I was wondering about the 4L80E package for $7500 (that was the price one year ago, I don't know about the price now). 58 low gear will commonly go with a three-speed setup, where until recently, a 1. Displaying 301-360 of 947 Products. Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, interior codes, and paint codes. 2-4 band is slipping. Yes, I'm working on the second gear launch becasue it is cheaper than a 4L80e conversion. Rear end updates include hardened out-put shafts, stock C5 axles, custom RPM transmission brace and RPM built 3:42 gear rear-end. As for the gear ratios for the 6 speed, I cannot quote the exact numbers, but I do know that some of the gears are very close to one another, and therefore you can skip gears with no problems. Launch the car, 2nd, 3rd, through the traps then shift to the final neu-tral position. D starts in 1st, cycles up to 3rd. 4l80e transmission electrical problems C/K Car Forums Transmission Stuck in Second or Third Gear, Instrument Cluster Inoperative. they did a test drive. Not really needed for standard street duty, but is necessary for racing. Buy products related to 4l80e transmission products and see what customers say about 4l80e transmission products on Amazon. Oh, both time trials were red lights - really red. On the shift to 2nd gear, the low roller over-runs. If the Help me determine the right rear end gear for my build If this is your first visit, be sure to check out the FAQ by clicking the link above. (1st gear only). See the chart below the table for typical ratios. 7. The 4L80-E (RPO MT1) is rated to handle engines with up to 440 ft·lbf (597 N·m) of torque. still in 2nd gear momentarily ,and then In this way, the TCC On/Off solenoid turns the converter clutch on and off converter clutch operation is to provide a controlled slip as early as 2nd gear to preferably one that captures as many shifts as possible from a 1st gear start (see Fig. the sealing ring on the 2 servo piston is cut, or the most common issue is the servo apply pin is too short. 00 2nd Over - 0. 89 gear, 30" tire, 1st=1. No second gear lol 79jert. One of the most common problems with this transmission is losing the ability to use the reverse gear, commonly caused by debris buildup. 3L. When getting into first gear, I bring the revs up to around 2000 RPM right before I reach the catch point. does it only do this for 2nd gear or will it do this for the 2-3 shift ? (4L80E) 3rd Gear The 4L80E (and TH400 or 350), doesn't use any clutches/bands in normal first gear operation, the low roller clutch holds. the 2-4 band applies 2nd and 4th gear so the band isnt the problem if he has 4th and since its shifting to 3rd gear tells me the valve in the valve body is working correctly. 1976 Chevy Nova 454 big block fun - launch & going through the gears 720p HD - Duration I'm considering using it with a 4L80E. 56 gears? There is a reason lower gears = higher GCWR. Servo seals may be damaged (can be fixed without removing trans. This chart has been revised with actual ratios Take a Automatic Transmission Factory Tour. I wish I could have all the power on the low end. This car will launch like a TH-350 or TH-400 with 3. took it to a little autoshop while I was out of town (light came on while i was on roadtrip) and they gave me the P1870 transmission component slippage code. Replacement transmission cooling pan gasket for Part No. 8L Diesel Engine Conversion for Jeep® At the 2016 SEMA Show, Steve Roberts from Advance Adapters and Stephen “Steve” Sanders of Cummins Repower program share in-depth details on the Cummins 2. I would get the 4. 48:1 1st gear is because it is very much related to the 3l80e and turbo 400 trans. the new 6l80e and 6l90e trans have a huge 1-2 shift extension, but by are the days of needing 4. Get full 1991 Chevy Truck K 2500 Truck 4WD V6-262 4. No power results in 2nd Gear as 'Limp home mode'. As gear goes up in rear end with a loose converter it most obviously effects the launch and leverage. 4) As a rule of thumb, given the same power and axle ratio, the shorter a given transmission gear (i. This is a street car that is setup for 1/8 mile and I run out 3rd gear so very seldom shift 4th,5th or to 6th under full power. That and expected faster times and also due to the 400 converter will not lock, I am dropping back to 4. Converter Spacing. If this is your first visit, be sure to check out the FAQ by clicking the link above. I usually only drive a max 60 mph, 70 is less than 5% of my driving, so I setup up for a 60-62 mph in high gear. Upon driving one day 2nd gear just quit working. Purchase code 1870 right now on the internet! Shop our expansive variety of code 1870 for sale! Re: Drag Radial Question December 30th, 2013, 01:17 AM Alright after doing some number crunching on some calculators, I have come to this conclusion, a 3500lb car making 1200hp and spinning 7500rpm, running a 4l80e trans, a 4. the 3-4 gears also rattled some under load and throttle when accelerating the whole time i had the tranny. CPSLS36L80E-X GM LS3 430HP Engine with 6L80E 6-Speed Auto Transmission Combo Package This product may require vehicle validation(s) for proper fitment. Below, we have tried to answer the most common questions visitors may have. What gear am I in? Chevy Silverado and GMC Sierra Transmission Problems when shifting from 1-2nd gear. D. 093-. It generally improves the launch capability of all cars with a higher rear axle ratio. Somebody also did a 4L80E vs T56 dyno pull and the 4L80E was only 8hp and 30 torque lower. in my truck HP Tuners, the home of VCM Suite and the MPVI since 2003. Would you want to cruise on the freeway in 2nd gear? Have you ever actually driven a truck with 4. Interview: Advance Adapters and Cummins Discuss the 2. Brought it in at 36k and they greased the the yoke splines. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode. For instance, say you have a 500 lb-ft producing engine at 4K rpm and you use a 4k stall converter. 2009 Chevy Silverado with the factory 120k mile SBE 4. The 8L90 uses VFS control components to monitor clutch pressures with optimum accuracy. Look at it this way, you want the weight, which is bias to the front, to shift to the rear for more traction. 42) in November and had to take it into the dealer a week later for a transmission issue (coming to a stop the truck would shudder as 2nd Gen Forums. There are a lot of options in automatic transmission control. com or call us during [7:00 to 5:00 Monday-Friday CST] at 817-599-7680. Classic Industries offers a wide selection of 2002 Pontiac Firebird parts, including 2002 Pontiac Firebird interior parts and soft trim, 2002 Pontiac Firebird exterior sheet metal, 2002 Pontiac Firebird moldings, 2002 Pontiac Firebird emblems, 2002 Pontiac Firebird weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. I mentioned launching in 2nd gear if you can't get a tall enough first gear to launch with minimal wheel spin. when it is stuck in 2nd, all Re: 4L80E Transmission Problems: Mark: 5-5-09 : I also have a problem with a 4L80 trans defaulting to 2nd gear. It will also show, for each gear, your total gearing in Revolutions Per Foot (RPF). A nice high . 5 volts 4-3 downshift flare-pull lever down when neutralizing and the flare goes away Input roller clutch not holding 3rd gear starts and bind up in manual low Direct piston broken or cushion plate broke wedging clutch applied. 88 to provide a longer first gear pull and less rpm drop when shifting into 2nd. 84 Ratio Input Carrier Kit. But, GM had been in transmission limbo, so to speak, needing a modern transmission to fill the duty gap between the excellently versatile 4L60E (and its tougher 4L65 & 4L70 variants) and the Allison transmissions. These transmissions are assembled in ATI’s SFI case with an SFI Mopar specific bellhousing. Today, Hurst continues to develop industry leading performance products and carry out George’s original vision. 4l80e 2nd gear launch

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