You might be interested in upgrading the transmission in your GM truck or SUV. Many people wonder about the 4L60E vs. 4L80E transmission differences and if these two can be used interchangeably. While there are several similarities, there are far more differences.
In this guide, we will evaluate both transmissions and show you the differences. Plus, we talk about how the two can be swapped.
4L60E vs 4L80E Specifications
Name | 4l60E | 4l80E |
Type | 4 Speed Automatic Overdrive | 4 Speed Automatic Overdrive |
Applications | GM Cars - GMC, Chevy/Chevrolet, Buick | GM Cars - GMC, Chevy/Chevrolet, Buick |
Gears | 3 + 1 Overdrive 30% | 3 + 1 Overdrive 30% |
Weight | 150 lbs dry~ | 236 lbs dry~ |
Lenght | 23.5" | 26.4" |
Gear Ratios | 1: 3.059 2: 1.625 3: 1.00 4: 0.696 R: 2.294 | 1: 2.482 2: 1.482 3: 1.00 4: 0.750 R: 2.077 |
Case Material | Aluminum | Aluminum |
Fluid Capacity | 11 Quarts | 13.5 Quarts |
Fluid Type | DEXRON VI | DEXRON VI |
Max Torque | 350nm +/- | 450nm +/- |
Image | ||
Pan Gasket/Bolt Pattern | 16 bolt | 17 bolt |
Name Before | TH350 700R4 | TH400 |
4L60E vs. 4L80E Transmission Differences
The main differences between the 4L60E and the 4L80E transmission are the weight and size. Additionally, the power and torque specifications are different, along with the price, gear ratios, and electronic configuration.
Here is a more detailed list of the difference between the 4L60E and the 4L80E transmissions:
1. Origin
With the model names so similar, you might think that these two automatic transmissions are similar, but they are actually quite different. The 4L60E is an electronic transmission that comes from the 700R4. It was used in many GMC and Chevy vehicles, starting with the 1982 model year.
RELATED: 700r4 Transmission Specs & Identification (Full Guide)
The 4L80E is the electronic overdrive transmission that came from the TH400 lineup. It’s a model that was designed for high-performance functions, from towing and hauling to hot rodding.
2. Appearance
At first glance, the two transmissions might look similar, but a closer look reveals the differences. The 4L80E contains a pan that is oval, while the 4L60E has one that is shaped like a rectangle.
The number of bolts that both contain is also different. There is one gasket with 17 bolts on 4L80E models, while the 4L60E pan contains 16.
3. Weight/Size
Because of the application, the 4L80E is much heavier and larger than the other transmission. It features a length of 26.4 inches and weighs 236 pounds.
On the other hand, the 4L60E weighs just 150 pounds without any fluid. It is also only about 23.5 inches long.
4. Power/Torque
The 4L80E offers more power than the 4L60E. That’s why it is paired with configurations that have a more powerful engine.
The maximum amount of torque handled by the 4L80E is 440 pound-feet. In comparison, the 4L60E can only handle up to 360 pound-feet of torque.
5. Price
You can expect that the 4L80E is going to be more expensive because of the construction and amount of power it handles. It’s a great option if you have a heavy truck or need to push out maximum speeds.
However, if you are opting for something more budget-friendly, you want to consider the 4L60E instead. It’s going to have a lower price overall.
On average, you can expect to spend a little more than $2,000 for a 4L80E transmission. On the other hand, the 4L60E might only cost $1,500. Aside from the upfront cost, you must also factor in all of the expenses to make the new transmission compatible with your vehicle. We discuss these upgrades in more detail later in the article.
6. Gear Ratios
You must know the various gear ratios if you plan to swap the transmissions. Here’s what’s found with the 4L60E:
- 1: 3.059
- 2: 1.625
- 3: 1.00
- 4: 0.696
- R: 2.294
On the other hand, the 4L80E gear ratios are:
- 1: 2.482
- 2: 1.482
- 3: 1.00
- 4: 0.750
- R: 2.077
7. Electronics
You can’t plug and play the two transmissions with each other, mainly because of the different electronics. They are incompatible with one another the way that they are.
For example, the 4L80E contains two-speed sensors, while the 4L60E has one. Other sensors, wiring harnesses and electronic equipment can also be different.
What is the 4L60E Transmission?
The 4L60E automatic transmission contains a high gear ratio. It also provides a lot of torque in the first gear. Everything inside the transmission is made from aluminum alloy for a durable design.
It also contains a durable transmission pan, a reliable gear seat, EPC, a 13-vane pump assembly, a high-performance cooler, a hardened stator shaft with rings, and specialized control solenoids. It’s meant to be used with rear-wheel drive and it requires 8.4 quarts of fluid.
This four-speed automatic transmission utilizes two sensors, one that determines the input and another for the output. It’s ideal for SUVs because of its lightweight design.
What is the 4L80E Transmission?
The 4L80E handles a lot more than the previous transmission. It’s designed for the pickup truck with its die-cast aluminum casing. Among 4WD configurations, it has one of the largest 32-line shafts.
This transmission holds 13.5 quarts of fluid. It’s a TH400, but it has 25 percent overdrive included. It was mainly used for ¾- and 1-ton SUVs or trucks, starting with the 1991 model year. It contains an electronic ECU and has undergone a few upgrades throughout the years.
4L60E vs 4L80E Transmission Similarities
1. Function
There’s no question that the function of the two transmissions is the same. They are both meant to control gears and are used in GM vehicles.
While there are many differences, the function of the two remains the same. As with all transmissions, the engine is linked to the wheels for controlled movement.
2. Electronic Control
The way that both transmissions work is the same. With either model, you get an electronically-controlled GM transmission.
Electronic control transmissions are different from manual transmissions. These require electricity to function correctly.
3. Type of Fluid
With either the 4L60E or 4L80E, you will need the same type of transmission fluid. Both transmissions require Dexron IV to run properly.
However, the amount of fluid needed is different between the two. Additionally, the shape of the fluid pan is different, as previously discussed.
Can You Swap the 4L60E and 4L80E Transmission?
You can interchange the two transmissions, but it’s not an easy swap. In fact, you might need help from a professional technician to get the job done. Among the many things you should pay attention to, consider these vital parts.
1. Transmission Tunnel
You won’t be able to place the bigger transmission in the space of the smaller one. If you take out the 4L60E and try to put in the 4L80E, you must make room for it.
To alter the transmission tunnel, you will need more than just a hammer. A welder will also be necessary.
2. Wiring Harness
We’ve discussed how electronics and sensors are different between the two transmissions. For this reason, you can’t hook the other one up in place of the first. The wiring isn’t just going to plug in and work.
Instead, you need a compatible wiring harness that converts everything over. This is going to cost you some additional money, no matter which way you are swapping out the transmissions. Additionally, if you aren’t familiar with the electronics and sensors, you want a professional to handle the job so nothing gets accidentally fried.
You may find some swap kits on the markets though.
3. Driveshaft/Propshaft
The 4L80E driveshaft isn’t the same length as the 4L60E. You must keep this in mind before you swap out the two. The easiest solution is to purchase a driveshaft of the appropriate length.
If you can’t get what you need, you might need to visit a special shop instead. A qualified technician will be able to create a longer driveshaft or make the existing one shorter.
4. Dipstick
You can’t swap out the dipsticks of either transmission. Both transmissions hold a different amount of fluid, requiring its own dipstick to work properly.
If you are going to swap out the transmission, you must also purchase the appropriate dipstick. If the transmission doesn’t come with one, you can buy it on Amazon.
5. Torque Converter/Flexplate
You will need a new torque converter or flexplate if you want to swap the transmissions. You might prefer to look for a special adapter kit. These come with the spacer and input shaft needed to work with the specific converter.
If you are purchasing the transmission from a junkyard or rebuilt, it’s easier to get the parts with it. Make sure it comes with everything required to make the swap.
6. Crossmember
You know that the 4L60E is shorter than the 4L80E. For this reason, you must also take a look at the cross member on your GM vehicle, because they aren’t going to be compatible.
You must modify the cross member to fit the new transmission. If you want, you can purchase the cross member that works with the transmission to make things easier. However, there’s also the option to get someone to weld you a new cross member.
You don’t want to swap out any transmission unless you get the new one to line up perfectly. It must be straight for optimal performance.
42 thoughts on "4L60E vs. 4L80E Transmission Differences and How to Swap It"
Bret Tardif
I have 2001 GMC Sierra 1500 5.3l with short bed step side it dose have 4wd an there’s the tow haul button on the shifter do u know if I have 4L80 transmission or not ?
Samuel Fowler
I'm sorry, your 1/2 ton truck (just as my 99 sierra 1500 slt z71 5.3) is a 4l60e, unless someone modified it.
Magnus Sellén
From my resources, I would say the same as the previous answer, you have a 4l60e transmission. Try to use a VIN decoder and you should see exactly which model you have.
ricky sharp
have 2011 chev 1500 4x4 trans goes in gear(like it should) pulls like it should about 500 ft quits like put in neutrial turn engine off restart (in about a min pulls good, no slip, quits in 500ft or so repetes over and over need help thanks
Bret Tardif
Ya do now if yours is the 4l80 or 4L60? Cause I have 01 Sierra 1500 an mine dose the same thing from cold runs great as soon as it gets to running temp like it back to neutral again an again I was told toque converter an shift sensor but good luck I just wonder if u know if it’s the 4L80 or 4L60
Enrique
I have a 05’ Escalade with 5.3L motor and V8 4L60e. Theirs no 1st to 2nd only 2Nd to 3rd , And no 4th gear. I’ve changed out all the Sileniods, and still no difference. I have one black broken wire underneath the Fuse Box connections . Can you help?!
Enrique
I also have the same trouble codes coming after making the changes on all Seleniods , P0785,P0758,P0753,P0740&P2761.
Jerry Kilpatrick
Will a turbo hydromatic from a ls1 motor fit my 1993 chevy truck with a 350 its 2wd
jason
will the pump from the 60e fit in the 80e
Curtis Smith
Will the working harness fix my issue of no 4 gear Swap 4L60 E out and ismnstalled 4L80E ?
Charles Clemons
How tall is a 4L40e from the base of the stock pan to the top of the bell housing?
Warren
Hi I have a 72 Vega I'm going with a 2003 Chevy 6.0 a tad under 500 hp I keep hearing one or the other is best to use 4L60 or 4L80 ? If will the 4L60e be strong enough with a stock build or will I have to put a lot of money in it to be strong enough ? I hardly drag race . This is all pro street .i have a modified tunnel for the 4L80e if need too so if I went that way then it sounds like just a stock build would be strong enough ? The I wonder about the hearing too ? Your thoughts might really help me a lot !! Thanks bud
Garrett Roberts
Is the bellhousing bolt pattern the same between the 4l60e and the 4l80e? Thanks, Garrett W. Roberts
Will Irish
What all do you think I would need for the 2007 Hummer H2 which had the 4l80e in the 2008-09 models?
Eduardo Garcia
I have a 4l 80 no four gear what can be the Problem
Roger Benally
I'm trying to look for a used transmission for my 2004 K2500 Silverado with 6.0L quad cab. . I know it has a 4L60e, but I want to know what year vehicles would have the same type of transmission.
Christopher
Got a good used 4l80e bolted to a 6.0 located in Nebraska
Don Swanson
I am purchasing an LY6 to swap into my El Camino. I want to install a 4L60E transmission behind it so I don't have to tear up my transmission tunnel. The engine computer was designed for a 4L80 transmission. What changes need to be made for this engine controller to work with the 4L60E. Thanks for your help
Jake
Did you ever find how to swap 4l80 to a 4l60e
Alex
I have a 2003 H2 Hummer. I am on the 3rd 4l60e. That transmission was built for vehicles under 6000 lbs. (Which is why my 6500 lb hummer destroys them when pulling. What parts exactly do i need to do this conversion. Im ready to do this conversion now. My hauling vehicle is down and i need to do something that will hold up. Instead of throwing good money after bad.
Tim Heimbigner
I’ve got a 2003 Chevy Silverado 15102 Will Dr. I’m wanting to find a crossmember for the truck. It came out with a 4L 60 E and the transmission was no good so I’m going with a 4L 80 E and trying to find a crossmember to convert it. Any help would be great
Tim Heimbigner
1500 2 wheel drive.
Larry
Thanks for the information! I was looking to find out if the transfer cases were the same. Speed sensors and all.
David Yates
I have a question. If the 4l80E has a longer case (26.4") than the 4l60E (23.5") why are you saying that the 4L 80E drive shaft is longer and needs shortened? If the wheel base of the vehicle remains the same and you install a longer transmission in place of a shorter transmission then you would need to install a SHORTER drive shaft to make the installation correct.
Leonard staber
I have the same question, did you figure it out?leo
Samuel Fowler
Precisely!, or cut yours and fab it into what you need, be sure to balance and straighten it before using.
Tim
Shorter in the rear, but if you have 4x4 then the front will be longer. Make sense?
John Clary
I'm swapping a 5.3 truck motor into a hot rod and there is a minor problem with getting the engine low enough because there is a full bellypan attached to the bottom of the frame and nothing can be below that. How far below the crank centerline does the pan of the 4l80e hang? This appears to be the stumbling block to getting the engine low enough, as there are engine oil pans that barely hang lower than the flex plate and still hold 8 quarts. Are there low-profile pans for the 4l80e?
Chris
What if you have a harness that went to a 4l80e but now have a 4L60E? Can you make the OEM harness work for 4L60E? Or is an adapter needed?
Bonnie G
I bought a 4L60e transmission for my '98 Chevy silverado z71 4x4 but it isn't the right kings. I'm ignorant on the subject so could someone please tell me why it didn't work ?
Magnus Sellén
What part is does not fit? The wiring connectors? The 4x4 models are special and that might be your issue that the new transmission is from a 4x4?
Cory Kohl
I have a 99 suburban LT been searching for days for the wire harness plug in locations do u know where i can find a video or a routing diagram for the transfer case and transmission
Magnus Sellén
Sorry, I do not have any information about this car or a wiring diagram. However, your best bet is probably to ask in a suburban forum. You can also try to google "Model + transmission + pinout" etc
jason mclaughlin
I have wire harness pulled in half ..... there are two yellow black wire locations in new connector and two pink. How do I know what goes to what
Magnus Sellén
Try to check on google images for "4l60e pinout" and "4l80e pinout" to see if you can figure out the wirings. Is it a purchased harness or you are doing one yourself? However, if it's purchased, the manufacturer of the harness should have one for you.
Rodney
Which one between the 60e and the 89e is a better performance transmission ?
Magnus Sellén
@Rodney Do you mean the 4L89E or the 4L80E? However, I assume that you mean the 4L80E. If you are looking for performance, the 80E is stronger and more reliable.
John Friday
What do I do to swap a 4l60e to a 4l80e in a 1996 Cadillac Fleetwood brougham
Karl
Do you read the article?
Samuel Fowler
Your 1996 Fleetwood is a FRONT WHEEL DRIVE, this will not be an option unless you want to change the engine positioning to longitudinal and output to RWD, this will require LOADS more work than you are likely willing to accept.
Mike
Looking at putting 4l60 in a1972 Chevy 4x4 3/4 ton with 500 hp crate engine your thoughts are appreciated ?
Samuel Fowler
Prepare yourself for transmission failure (or upgrade the 4l60e internally to support said power). I would suggest a manual transmission, these are known to handle much more power, last longer, require less maintenance, ect..