What is the difference between the GM 4L60E transmissions?
What is the difference between the GM 4L60E transmissions?
(OP)
I am trying to figure out the differences between the 4L60E automatic transmissions. I have not actually seen any yet though this is what the situation is. I have a 1997 Astro van with a bad transmission. I can get the late 1998 pick up truck 4L60E. both have the 4.3L V6. does anyone know what the difference is between the two? Interchange says they are different. I am trying to help out an unfortunate family, If I can make it work, I will.
Thank you.
Thank you.





RE: What is the difference between the GM 4L60E transmissions?
RE: What is the difference between the GM 4L60E transmissions?
RE: What is the difference between the GM 4L60E transmissions?
http://www.novak-adapt.com/knowledge/th700r4.htm
Bell housing - Since both have the 4.3 the bell housing would be the same (as well as SBC).
Electrical - one of the quickest things to check is if the electrical connectors are the same. If they are different you would need to do a bunch of homework to see if it can be rewired. Probably not easy to change or worth the effort.
4WD - you didn't specify this, and I don't what the differences are, but it would be an added complication.
Not 4WD - the tailhousing length might be different. Measure from the bellhousing to the end to make sure - otherwise you will need to modify the driveshaft.
ISZ
RE: What is the difference between the GM 4L60E transmissions?
thanks for the info.
RE: What is the difference between the GM 4L60E transmissions?
RE: What is the difference between the GM 4L60E transmissions?
thanks for the help.
RE: What is the difference between the GM 4L60E transmissions?
If that housing does not match your engine, there are outfits that offer conversion adapters, or you can either remachine what you have or just remove (saw it off) the bellhousing and fabricate a new pump plate, like in the old days of the turboclutch and clutch flight transmission conversions did. Then you bolt it up to a separate bellhousing, or your existing one if that is what you have.
RE: What is the difference between the GM 4L60E transmissions?
The major differences are external. Electrical hookups, speed sensor hookups, calibration, and converter stall are the main differences.
All of the traditional bellhousing applications (sbc, 4.3, etc) use the same input shaft, torque converter setup, and bellhousing depth. After the change to the LSx based engines, things changed. A shallower bellhousing depth and the metric TC bolt circle are the main things.
RE: What is the difference between the GM 4L60E transmissions?