Originally Posted by BillBoost37
4T60E 92-96 Supercharged 3.8L
4T65E 97-03 Supercharged 3.8L
4T60E 92-97 Naturally Aspriated 3.8L
4T65E 98-05 Naturally Aspriated 3.8L
I didn't denote HD vs regular due to the small differences and the relevancy to the topic. Keep in mind that both transmissions had updates and changes from year to year that may keep them from being fully interchangeable. Mounting is identical, to the untrained person, the 4T60 and 4T65 could be mistaken for each other. Easy way to tell them apart is the 4T60 has the electrical connector on the front of the trans vs the 4T65 on the side and the 4T60 has a vacuum modulator below the electrical connection.
As for putting a 65 in a 97 SE, I've done that swap. The only differences are adding 5 wires from the trans to the pcm, swapping the trans connector and reprogramming the pcm. All trans mounts etc are in the same places for location etc.
Thanks for the info. My man concern is swapping units and having gear ratio codes show up.
I had a feeling that they may bolt in, but I didn't know for sure.
Personally, I'd rather have the 60 over the 65.