I've got a '75 cutlass and am doing a 2000 LS1 swap, but I'm not sure what Trans to use. I'm going with an auto. I've been told to get the 4L60e. I have a TH350 sitting in the garage. any suggestions on what i should do?
The 4L60e would be my choice too. The overdrive will let you use some decent rear gears while increasing fuel efficiency. Companies such as TCI and B&M sell stand alone electronic transmission controllers if you need one.
I suppose the first post should've asked if this is going to be a street car or race car. Mostly street use the od trans.Mostly track, the th350 is easier to make strong enough to handle the abuse that racing puts on transmissions.