4l80 vs 6l80 4L80 vs. Cost wise 4L80 is going to be more but in other peoples experiences, is it do it right the first time and pay for the 4L80 or have the 6L80s held up? The 6L80 would have big shoes to fill, with legendary predecessors like the TH400, 4L80E and 4L60E transmissions. Used 4l80e Transmissions . I would not mess changing it. 0 LS. Post navigation. The 4L70E transmission is a bit of a rare bird, and not very common. "The main difference is that the 6L80E has much more versatile gear ratios. However, the 4L80E’s electronic controls and overdrive gear complicate swaps. From what I have seen on this sub, the 4l80 is the most recommended 4 speed automatic for an LS swap generally speaking. I 4L80E vs 6L80E: Which is Better? 👉 Transmission Showdown 👉 Discover the pros and cons of the 4L80E and 6L80E transmissions to determine which one is best suited for your needs. They are both meant to control gears and are used in GM vehicles. K. While there are many There isn't such a thing as a 6l60e(to my knowledge). I hope everyone enjoys thanks for watching. You also asked about GM’s new 6L80E. The 6L80 Hydra-Matic transmission is a 6 speed automatic transmission manufactured by General Motors. Turbo 400 for Turbo LS Combo. Here are the GM part numbers for what you need to get the 4l80e to mate up. 4L80E: Vergleichsmerkmal Beim Eintauchen in die Welt der Getriebe von General Motors, insbesondere der 4L60, 4L60E, 4L80 und 4L80E, ist es wichtig, die komplizierten Nuancen zu verstehen, die diese Komponenten auszeichnen. You'll clearly see, a 6L80/90 is the ONLY automatic transmission your TBSS should have. There are multiple advantages to the transmissions with Another difference is in the sensors given that there are 2-speed sensors on the 4L80E that differ from the speed sensor on the 4L60E. All in all look at it this way: people have gone 8s with the 4L80E and 9s (or maybe faster) with the 4L6xE series. Jump to Latest As easier route would be a non-electric old style vaccum controlled setup like people do with the 4L80E I think. The 4l80e is more compact,more cost effective,and just as reliable as the gear vendors unit in my opinion. And 4l60e vs 4l80e: difference between 4l60e and 4l80e. The 4L80E was introduced in 1991. It does'nt look too terribly hard if I can grab a donor pcm & wiring harness. 0/ 6L80E, since my motor has quite a few miles on it. com: User Name: Remember Me? Password 4l80e vs 6l80: Difference Between 4l80e and 6l80 Transmissions . We have seen several patterned failures, written numerous articles, and found countless fixes to keep these units on the road (and the list doesn’t end). Although they come from different eras, there is quite a bit that these two transmissions have in common. 4L60E vs. The defect is mainly attributed to a torque converter failure. Couple questions: 1. 4" straight (now muffled) pipe exhaust, cross over, Aftermarket intake. This is because the Gear Vendors unit overdrives the output shaft and the 4l80e overdrive unit must overdrive the forward and direct drums,and both gearsets . There are adapter kits to run the LT230 off of the 32-splined 6L80E. 48, second gear:1. Although a huge leap forward in transmission performance, there are issues consistently found in this model. 4l80e Transmission Parts Diagram . Why use a 4L80E and not a 4L60E? The 4L80E is a descendent of the proven TH400 transmission design. The 6L80 is The 4L80E transmission is the advanced progeny of the legendary TurboHydramatic TH400 automatic transmission, and is based heavily on the 400 in both parts and strength, yet featuring an added overdrive gear, a lock-up 6L80 vs 4L80: Strength Comparison • Strength Battle • Discover which transmission is stronger between the 6L80 and 4L80. K&M Mason · Registered. I would ask TBM their recommendation, they do 6L80 swaps into everything. 4L60 vs. Post: 4L80E vs Allison Trans (Topic#315714) abk Forum Newbie Posts: 5 Reg: 12-23-13. A total of 0. Las GM 4L60E y 4L80E cuentan con una velocidad más hacia adelante, lo que las convierte en transmisiones de cuatro velocidades. User Info. Code: 3. 2. The 6 speed takes a fair amount of trans tunnel work and my Holley Dominator ECU can't control it. Jump to Latest 21 - 40 of 43 Posts. Unlike GM’s factory six-speeds, which are ‘double overdrive’ with both fifth and sixth gears under 1:1 ratio, TCI’s 6X has a true 1:1 fifth and 0. J. 6L80E Transmission Gear Ratios. The mere fact that people are so interested in this topic is a testament to the absolute bulletproof reputation of the TH400. 4L80E Vs. From factory, the 6 speeds have a higher rear end ratio (lower number). Swapping a TH400 for a 4L80E (or vice versa) is doable. It’ll be useful to buy a harness and control unit when carrying out a swap of one transmission in the other. Projekt. Previous Article ATF+4 Transmission Fluid. 4L80e is a 4 speed. Only show this user My dad has a 6l90 in his '12 vortec 2500hd. 4l60 vs 4l65 vs 4l80 vs 4l85 . 2 posts · Joined 2022 Add to quote; Only show this user #1 · Aug 11, 2022. Notable among these is its physical appearance. Just so those pitfalls are out there. 10 to perhaps 0. 0 gas/6L80E combo, the transmission sure has held up better htan the engines. 4L70E Transmission Remanufactured Heavy Duty 4. First introduced in 1991, these transmissions went through multiple upgrades that go all the way up to the 2000s. I have a 4l80e in my '01 vortec 2500hd. 6L80 w/ the tap shift, and a MAST M90 ecm and be done with it. 4l60e vs 4l80e: difference and comparison4l60e vs 4l80e differences 4l70e, 4l70 See for yourself the difference in RPM and applied torque between with the 4L70 vs 4L80 vs 6L80/90. 75 overdrive sixth, bringing the first four gear 4L60 vs 6L80. 016 mm) thick (figure 3), while the later rivet head (figure 4) is about 0. 4L85 Transmission Nuances. Lawrence Discussion starter. As with earlier Hydramatics, the 6L80 will accept either the 258mm or 300mm torque converters. TH400 w/ Gearvendors OD to gear split. The 10 grand will add up if he posted his receipt, probably contains 2. And the first to do so while maintaining ALL critical user functions like cruise control, 4L60 vs. Some of the cars th A 4L80E is a slam dunk behind a SBC in a '55 Bel Air but a 6L80E is not. Built 6L80 vs 4L80. I don't want just 3 speeds in the car so I was thinking of getting a 4l80 or a 6l80 to put behind it. 4L80E. Gen III/IV "LS" swap info TECH: LS motor to I have a 6l80 I promise If you'd like to check it out, click the new buggy link in my thread and go to the end. Although there doesn’t appear to be a lot of difference in the two; you can tell the difference when you have them side by side or by measuring the thickness. Differences between the 4L80E and 4L60E. Being that the 6L80E doesn't have a noticably better overdrive, its not the end of The main difference between the two is that the 4L80E has electronic solenoids that control the shifting, while the 4L80 uses a hydraulic system. This size difference means that they are not easily interchangeable. Any reason why I wouldn't go with a 6l80e over a 4l80e? I sometimes find them attached to used LS motors or later truck motors (LQ4, LQ9, LY6, etc). Teknisk Information. 1 2 3. Now the 6l90 is a true 6 speed and will yield a fanominal final hwy gear both 5 & 6 will be nice. The final gears are about identical between the 4 and the 6 so highway cruising would be about the same between the 2. Jump to Latest 53K views 9 replies 5 participants last post by chakis24 Jul 30, 2009. Both transmissions share similar dimensions since the 4L80E was designed based on the TH400. The 4L80E transmission was introduced in the early 90s and is commonly used in heavy Specification differences between 4L60 and 6L80. The 4l80e and 6l80e were just one year apart on the 5. The factory 4L80E—and the stronger 4L85—is essentially a The difference between these two transmissions is that the 4L80E has one less gear than the 6l80e, but it can handle more torque than the 6l80e. Im looking at being around 650rwhp with nitrous and trying to determine if building my 6L80 is worth it. 8 5. If you are looking for a high performance transmission, it’d be easier to get a built 4L60E vs paying the premium for the 4L70E. The four gears make even more sense since the 4L80E was primarily used in heavy-duty applications. While the 6L80 offers fuel efficienc While the 6L80 is generally mechanically compatible with Chevrolet and GM Gen. 4l80e vs 6l80: difference between 4l80e and 6l80 transmissions4l80e speed sensor wiring diagram 4l80e alto high performance transmission deluxe rebuild kit 97-on level6l80e/6l90e/4l80e front transmission pump alignment band tool replace t. I've looked at 3 transmissions so far, the 6l80e, the 4l80e and the 4l60e. Currently 454 BB (450hp/500tq) backed by a TH350. This newer transmission is what Chevrolet Performance has just announced availability of the 6L80E transmission package that will work behind either a Gen IV or Gen V LS engine. As far as the 6L80E I'll say yeah; our wreckers with the 6. Ok so my trans is pretty much done so needless to say I'm in the market for a new one. Jump to Latest Sounds like you are decided against a 6l80 but with an 08 6. For example, the 4L60E was based off of the earlier 700R4. 74,500 miles on the stock trans with Getting to Know More About the 6L80/6L90E. 👍🏼 ️🙏🏼 And lastly I could swap a 4L80 which I don't know if it will fit. Wrapping Up. The only difference is that the 4L80e featured additional upgrades like an overdrive gear, lock-up torque converter, and electronic controls. 4l60 is basically scrap to me after the nightmare it has caused me twice now. jdla140 · Registered. I like the 4l80e much better than the 6l90. The 6l90 does a horrible job keeping the 6l80 vs 6l90: Difference Between 6l80 and 6l90 Transmissions Affiliate Disclaimer Transmission Cooler Guide participates in the Amazon Associates and eBay Partner programs, which are affiliate advertising programs designed to provide a means for sites to earn a small commission from purchases made from links to products on Amazon. 1 2. 4l80 or 6l80? I want to build am SN95 that's pretty streetable with a 6. 4 posts · Joined 2008 Add to quote; Only show this user #1 · May 22, 2008. Verkstadsbilder Pågående Projekt Arkiv med Avslutade Projekt. 2L 4x4 which has the 6L80 transmission I think. 2 it would be for a 6l80/90e and that needs to be changed as well. How to tell the difference between 4l60e and 4l80e. The 6L80 is a huge beast to package and the case itself is much thinnner and weaker IMO than the 400 or the 4L80 cases. 1K views 12 replies 6 participants last post by josh95 Aug 19, 2022. The 4L80e is a heavy-duty 4l80e vs 6l80: Difference Between 4l80e and 6l80 Transmissions Read More Jeff Smith: The transmission in your truck is the 6L80 that first appeared in the Corvette in 2006. It is very rugged, has much more potential for power capacity than any other overdrive transmission on the market. Al profundizar en el mundo de las transmisiones de General Motors, específicamente las 4L60, 4L60E, 4L80 y 4L80E, es fundamental comprender los intrincados matices que distinguen a estos componentes. Esta comparación integral tiene como objetivo analizar las similitudes y diferencias The spline count is the same as the 6L80E / 4L80E but employs a female configuration. it shifts fine and I can program it as needed. Thread starter Sloth_n@med_Speed; Start date Mar 2, 2019; Tags 4l60-e 4l60e 6l80e vz 04 1; 2; Next. 6l80e Transmission Cooler Line Diagram & Fluid Flow Path. 4L80 vs 6L80 Engine & Drivetrain. Transfer case. 15-second in a quarter-mile comparison between a stock 4L80E and a TCI Six-Speed. Most machinists and DIY enthusiasts know that torque converter failure is the #1 issue that grounds these transmission units. 6l80e / Transmission Cooler Lines. For more information, visit our page at: TRUE BLUE MOTORSPORT . . Here’s what it looks like: The 4L85E is 26. Options if you must have 6 speeds but dont want the comp issues. 6L90E is a 6 speed. com Don't forget that the 6L80 is the 1/2ton tranny, and is to replace the 700R4,4L60, 4L65E and 4L70E line of trannys. 030:1 VS 2. The planetary gear setup also differs. Jeff Smith: The TCI six-speed automatic is indeed a revamped or upgraded 4L80E. The 4L80 has four pinion gears on the assembly while the 4L85 has five. Go. The 4L80E is noticeably larger and longer than the 4L60E. o1o inches to 0. 8420 posts · C7 Z06 Discussion - 8L90 to 6L80 - Yes you read that right - I have a 2017 Corvette Z06 with Heads/CAM and the Magnuson 2650. Self contained control wire and control is cool. It is my understanding that if you have a 3:42 gear ratio, the 6 speed will act like you have 4:10's. 25 inches 4l80e vs 6l80-90e. The 6L80 would have big shoes to fill, with legendary predecessors like the TH400, 4L80E and 4L60E transmissions. It was an evolution of the THM400, but it had four forward gears 6l80e vs 4l80e vs 4l60e. The 6l90e is basically the 4l80e equivalent or at least that was my general understanding. While the 6L80 offers fuel efficienc 4L80 vs 6L80 Engine & Drivetrain. "Stock versus stock, the 4L80E and 6L80E are very similar in terms of strength," explains Kyle House of Circle D. 48, third Difference between 4l60e and 4l80e (4l60e vs 4l80e)4l80e bellhousing bolt pattern 4l60e vs 6l80: difference between 4l60e and 6l80 transmissions4l60e rebuilt transmission 4wd 98-06 ls style 450 hp dyno tested. A common The 6L80 vs 6L90 transmissions usually get damaged around the pump area. com: User Name: Remember Me? Password 4L80 vs 6L80 Engine & Drivetrain. The GVWR rating also differs between the 4L80 at 16: 500 lbs, and the 4L85 at 18,000 lbs. 0L 2WD Dependiendo de su aplicación va la transmisión, evítate problemas e infórmate primero! En este video Sabrás Que transmisión es mejor para tu proyecto!------- The 6L80 and 6L90 transmissions have become the most popular rear-wheel drive GM transmissions in most of our shops. 040” (1. As a result, it doesn’t have the usual direct 1:1 ratio like the 4L60E and 4L80E In 2006, with the introduction of the landmark and innovative upstart, the 6L80 6-speed transmission, the 4L80 began to be replaced in several applications, which was, doubtless, GM engineers' ultimate intention. The 6L50 upper valve body (1) has taller bosses for the input and output speed sensors. Spacer - 12563532 Bolts - 19257940 Flexplate - 12621399 Don't forget the 6 bolts for the flexplate to converter if you don't have those as well. The 4L80e and 6L80 are both automatic transmissions made by General Motors. chris demartini Discussion starter. Important: Installation of the 6L80 / 6L90 upper valve body on a 6L50 transmission may result in an internal fluid leak with no forward or reverse. This adds two more gears over what might otherwise be a 4L65E. By utilizing more gearing, the 6L80 keeps the car in it’s power band longer, improving the MPG of the vehicle between 4-7% (over the previous generation fours speed 4L80 vs 6L80 bellhousing size LSx Swaps. Based on my experience, 4l80e or jump on a 6 speed. Is the 6l80 worth the extra cost? Or should I get a TH400 with an overdrive? Share It has a MUCH lower 1st gear than the 4L80, 4. 3. With so many of them in need of repair, they have become a common unit to 4L80 vs 6L80 Engine & Drivetrain. My 2009 3500HD with 200K+ miles, the transmission is still fine, though as 6L80 to a 4L80? Jump to Latest 5. 015 inches of material is removed from the bell housing This story will focus on the most affordable opportunities with the electronically-controlled four-speed automatics, like the 4L60E thru 4L75E, and touch on the 4L80/85E. Attachments. com and ebay. The 6L80 / 6L90 valve body center support oil transfer holes are located more to the top (3). if you had a GM e38 ECM First showing up between the fenders in the late ‘90s, GM’s popular LS-based small block engine was an immediate success and has been the hot ticket for hot rodders for well over a decade, with its popularity continuously rising. If and when I go to a 4L or 6L, I will be needing a transfer case with a passenger side drop. The 4L60E vs 4L80E performance transmission differences are numerous. Question: Jump to Latest 21 - 34 of 34 Posts. I am looking to do a powertrain swap and before I start thinking about which package to use, I need MT1- 4L80E transmission: The 4L80E is significantly bigger than the 4L60E and doesn’t look the same at all. 6L80E vs 4L80E: Which is Better? • Transmission Showdown • Discover the differences between 6L80E and 4L80E transmissions and find out which one is best suit 4L80E by General Motors is one of the most popular four-speed automatic transmissions out there. 10 gearset, transbrake with special deep moroso pan, aluminum direct drum hardeded input 4L80E vs. The 4L80/85E tranny replacement is the 6L90. On the side of the transmission (on the passenger’s side Stock for the engine is a 6L80E, which I'm told has it's control module in the case - meaning the LC9 computer doesn't control the transmission like it did in Gen 3 motors. com: User Name: Remember Me? Password 4l80e transmission parts diagram 4l80e vs 6l80: difference between 4l80e and 6l80 transmissions 4l80e vs. Question - 4L80 vs 6L80? | GMC Truck Forum Now the 4l80 vs the 6l80 they are same case and basically the 6 is a split gear setup version of the 4 aka its not a true 6 speed in the since of having 2 tall final gears. 4L80E: Carácter comparativo. The 4wd version of the 6L80 is the same length as the 4wd version of the 4L60 and only slightly wider so I think it should fit, but the 4L80 is longer and fatter so I may need to cut and modify the tunnel and move the crossmember and then also get new driveshafts. 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. Joined Feb 1, 2013 · 285 Posts #21 · Dec 1, 2014. Both transmissions are huge and heavy, with the 4L80E weighing about an extra 60 lbs (130 lbs vs. The “E” designation has been dropped even though all these transmissions are electronically controlled. The 4L60E/4L80E transmissions were basically upgraded and re-engineered transmissions from earlier based models. NORTH TEXAS TBSS Discussion starter. The early rivet head is 0. Joined Jan 11, 2013 · 254 Posts #21 · Oct 20, 2018. 2943 posts · Joined 2010 Add to quote; Only show this user #1 · Dec 20, 2010. The 4l80 Borg Warner High Energy clutch material is a carbon based one, but is used most commonly in the th400 in both the 2nd gear and 3rd gear dynamic positions all the way to 2000+hp trans or even Rossler high HP 1. The oldest 4L80E transmission model was manufactured between 1991-94. From what I can decipher, the 60e does better in highway use than the 4l80, as the 80 revs higher. The 4L80E gets four gears, which used to be enough, considering it came out in 1991. I blew up some clutches at KOH this year and then built a fresh one with some aftermarket clutches and welded drums. Function. As you can see from the ratios the 6l80 is damn close to the 4l80. III+ engines, due to its advanced control strategy, the 6L80 is functionally compatible only with Generation IV GM engines and their matched Engine 4L60E vs 4L80E Transmission Similarities 1. Next Last. Yet, the 4L80 continued use Our simulations reveal that this is worth anywhere from 0. Register or Log In To remove these advertisements. 0 & sell it to get some of the cost back. Las GM 4L60E y 4L80E derivan de la Turbo-Hydramatic, una familia de transmisiones automáticas de GM, que hizo se debut en los años 60, y contaban con tres velocidades hacia adelante más reversa. While Chevrolet Performance carries the 8L90E in its catalog, unless this trans is used in conjunction with a Gen V (LT1 or LT4) engine and controller, the 8L90E is currently In the market for overdrive tranny for the 72 Chevelle. The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain: 4L80 vs 6L80 Web 67-72chevytrucks. Save Share Reply Quote Like. View 6l80e transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. 0L and e38 ecm then your engine/ecm is compatible with the 6l80 so that is another option. 07-08 4l60e to 6l80e swapDifference between 4l60e and 4l80e (4l60e vs 4l80e) 07-08 4l60e to 6l80e swap'01 s10 ls 4. The gear vendors unit does produce an overdrive ratio at a lower power loss than the 4l80e. Once GM made the move to the six-speed, it didn’t take long to upgrade from six to eight forward speeds with the introduction of the Diferencias 4l60e vs 4l80e. Auto Transmissioner för Race Drag Racing Bilder. But in what scenarios would the 4l80's siblings be a better fit? Locked post. I already have a flare in 3-4 shift and know I need to fix it. There is also the 4l70e as stated. There are many cars that the 4L80E just won’t fit into without modifying the transmission tunnel either by taking a large hammer to it, or by welding in a larger tunnel. com: User Name: Remember Me? Password Based around the 4L80E (and fitting wherever a 4L80E will fit), the 6X is a true six-speed transmission that TCI rates at 850-plus horsepower. 480:1 but because it is a 6 speed the ratios are actually closer together than the 4L80. 1 of 2 Go to page. 4l70e vs 4l80e Jump to Latest 33K views 17 replies 10 participants last post by devus1 Dec 21, 2010. It’s not special. L. Like the 4L80E, there are also differences between the 4L85E and the TH400 transmission. 93 chevy c3500 crew drw 6. 187 lbs). Send Private Topic View Profile. Only show this user. There aren’t too many other 4L80E vs 6L80E: Which is Better? 👉 Transmission Showdown 👉 Discover the pros and cons of the 4L80E and 6L80E transmissions to determine which one is best s The 4L80e is a heavy-duty 4l80e vs 6l80: Difference Between 4l80e and 6l80 Transmissions Read More. The main difference between the two transmissions are their size and torque capacity. It has better power flow for big power applications, much more clutch capacity and apply area than the 4L60E. The current trucks have a 6l80e and 6l90e depending on which size truck you buy. The 4L80e uses four forward gears and one reverse gear in the following ratios! First gear:2. 5TD(Ted's take out) nv4500(now a 4L80E) HX35, Down pipe. Next Article Is Engine Braking Bad For What’s the difference between 4l60e and 4l80e What's the difference between 4l60e and 4l80e Difference between 4l60e and 4l60. I then would rebuild my existing 4L80E & 6. Not that it matters much but MPG atleast around town is better on a 6l80. 065 TH700R4 / 4L60E / 4L65E Stage II -› Stage V 4L80E / 4L85E Stage I -› Stage IV 6L80E / 6L90E Från Std till 1000Hp version. This is a much different transmission from the earlier generation 4L60/4L80/4L90E four-speed overdrives. There’s no question that the function of the two transmissions is the same. 5 & newer 2500 or 3500 with the 6. Learn how the 4l80e and 6l80 transmissions differ in size, weight, fluid capacity, type of fluid, type of vehicles, durability, fuel economy, shift performance, and towing performance. have a 2009 Silverado 6. The 6L80 is supposed to be stronger than the 700/4L60 line of trannys, but time will tell. The 6 speeds work but for the trouble to physically get them to fit a 4l60 or 4l80 are proven and alot easier to deal with. Jedley515 Discussion starter. TH400. So technically, the 4L80e is the heavy-duty version of the TurboHydramatic TH400. 6L80E vs 6L90E: Within one year of GM introducing the 6L80e, the stronger 4L80E EARLY VS LATE MODEL transmission Learn the differences between the two. C. New 4L80 vs 6L80 Engine & Drivetrain. If I purchased the motor and tranny (6l80e) altogether, are there any issues Clearly, the biggest difference between the TH400 vs 4L80E is the 4L80E’s overdrive gear. Adding a ton of power to my DuraVee made a big difference but the 6 speed Allison with its double overdrive was the game changer for sure. I have a 6l80 in my truck and the tuning is a PITA unless you have somebody very knowledgeable. Hi all, I don't have or know anyone with a 4L80 so I was wondering if anyone knew if there was a difference in the bellhousing size of the 4L80 vs 6L80? Way back in 20-ought-8 against all naysayers [looking at YOU 4L70 Level 8 apparently representing the number of times you have to rebuild them and 4L80 groupies LOL], we were one of the first companies to successfully swap a 6L80/90 into a vehicle never designed for it. At this time, we only recommend using computer controlled engines compatible with the 6l80E. 4L85E vs. Racing. The Bottom Line. 6l80e transmission differences (which is better) Will a 6l80e replace a 4l80e. Over 35,000 forward facing lumens Now the 4l80 vs the 6l80 they are same case and basically the 6 is a split gear setup version of the 4 aka its not a true 6 speed in the since of having 2 tall final gears. The way the power is applied is different than the 4L80E / TH-400. Can a 4l80e replace a 4l60e200r4 transmission wiring Will a 6l80e replace a 4l80e4l60e 4l80e transmission differences and how to swap it, 58% off. 3 LS1 6. February 28, 2018. 4L80E, 6L80E and even the 8L80E transmissions for comparison purposes. 6L80 vs 4L80: Strength Comparison • Strength Battle • Discover which transmission is stronger between the 6L80 and 4L80. RWD in New England weather (even with stabilitrac and ABS and all that jazz) is dodgy. It was created to help GM meet ever more demanding CAFE regulations on their vehicles. The BW4493 is 27-spline and would bolt up just fine to stock or to a 27-splined 6L80E. I have mine controlled by a Mast ECM to an adapter to the 6l80. About Press Copyright Contact us Press Copyright Contact us I think what im going to do as of now is just start looking out for a wrecked 07. If you still have the flexplate that came with your 6. 3 transmission automatic. The 6L80E automatic transmission makes use of 4 underdrive gears as well as two overdrive gears. The 4l80e also has a lower Don't forget that the 6L80 is the 1/2ton tranny, and is to replace the 700R4,4L60, 4L65E and 4L70E line of trannys. This is a completely new and different transmission compared to the 4L80E. Is the bellhousing pattern the same between the TH400/4L80E/6L80E? If so that will be awesome as I can get an adapter between the Caddy BOP pattern and the Chevy TH400 pattern for about $60. The 4l80e is a heavy-duty transmission for large trucks So, the main difference between the two transmissions is the number of gears. ijxbcyblvdawnufmarbesaaewnopgyombokgzwqruhznoheupfephxqqtcuyplfrxajpelulqanjmg