LT1 swap, 4l60 vs 4l60e
Thread Starter
3rd Gear
Joined: Jul 2023
Posts: 3
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LT1 swap, 4l60 vs 4l60e
I'm working on swapping a '93 LT1 and 4l60 transmission into my '79 Corvette. While looking at aftermarket harnesses I noticed all of them reference the 4l60e transmission. It was a lack of knowledge on my part, I purchased the engine and transmission without realizing the difference that e makes. However it has set me back a bit as I'm no longer certain about half the information I've gathered.
So my question is this: Should I consider purchasing a 4l60e transmission and sell off the 4l60? Or could a 4l60 be used without much consequence?
So my question is this: Should I consider purchasing a 4l60e transmission and sell off the 4l60? Or could a 4l60 be used without much consequence?
Drifting
Joined: Aug 2019
Posts: 1,511
Likes: 498
4L60E with a aftermarket ECM to control it , you can adjust shift points full throttle, adjust Lockup Torque Converter and just have a better transmission. If you go 4L70 you can use the TCC to split gears because the Lockup clutch inside the Converter is way more durable than a 700 , 4L60e and 4L65E , below is the Controller I would use
https://www.usshift.com/usq4.shtml?g...iABEgLlOfD_BwE
https://www.usshift.com/usq4.shtml?g...iABEgLlOfD_BwE
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
The LT1 PCM to use is the 94-95. The 94 4L60e is a 1-year only transmission without the PWM solenoid for the TCC. The 95 is also a 1-year only transmission with a specific downshift solenoid.
I run a LT1 with the PCM flashed for a 95 and it runs a 96 4L60e. It has worked fine for me, but some people say this can't work.
I run a LT1 with the PCM flashed for a 95 and it runs a 96 4L60e. It has worked fine for me, but some people say this can't work.
Intermediate
Joined: Jun 2023
Posts: 29
Likes: 12
The 4l60(700r4) will work fine if you use a harness meant for a stick car. Only a switch and relay are needed to manually control the torque converter lockup.
https://www.motortrend.com/how-to/ho...hout-computer/
Heed Jebby's advice about the TV cable though. I know a few people that fried fresh 700r4 and 200-4r rebuilds because they screwed up the adjustment at install.
https://www.motortrend.com/how-to/ho...hout-computer/
Heed Jebby's advice about the TV cable though. I know a few people that fried fresh 700r4 and 200-4r rebuilds because they screwed up the adjustment at install.
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
Since you are already putting electronics on the engine the e transmission opens up so much for shift curve tuning it's way better to use. Don't like the shifting curve or TCC lockup - just change it in the tune.
