Mike96z

iTrader: (78)

So buying an LS1 fbody with a bad 4L60E. I see them for decent prices all over, some are LT1 4L60E's, some are 3.4 or 3.8L versions and of course then there are the LS1 versions. My question is, if I got any of the other 3 would they still work or should I just look for strictly a LS1 version? I would think only the bellhousing would matter if the connections are there.

So....

LT1 4L60E on LS1 - Will it work? Modification?
3.4L 4L60E on LS1 - Will it work? Modification?
3.8L 4L60E on LS1 - Will it work? Modification?


Thanks for any help!
Mike

ROCNDAV

iTrader: (100)

LS1 has a removable 1 piece Bellhousing.
LT1s are different.

Not sure about the 3.4/3.8

Mike96z

iTrader: (78)

Are they interchangeable and if so what modifications are needed?

redbird555

iTrader: (14)

no in shoirt all the trannys are different in one small way or another and its easier and cheaper to just buy one made for an ls. you can also use a 4l60e from a 99-up truck or van just as long as its a v8

mrvedit

I just answered a similar question in this new thread:
https://ls1tech.com/forums/automatic...fferences.html

It has a picture of the trans you want - a '98 or later with a bolt hole in the 12 o"clock position which indicates it has the LS compatible 300mm input shaft.

ws6fitz

What is your budget? My buddy as a 4l60E with 40k miles on it. Works fine. It came out of a stock f body and he bought a built trans. PM me if you're interested.