Originally Posted by Mike1995
Actually, I should have asked specifically to remind us what project your working on. With a swap project like this, we need to know the car this is going into.
The car I have is one of those oddball 1996 Bonneville SE (not SSEi) Supercharged that came out of the factory with an L67 and 4t60E. I did a lot of work to the motor (Diamond pistons, 20/1000 bore, milled heads, comp cams cam, springs, yella terra rockers, LS1 rods, reduced pulley, SLP headers).
Since I was only 7 bolts and 2 drive shafts away from taking out the tranny, I decided to go for rebuilding that too, despite never having a problem with it for over 200,000 miles. But the more I read, the more conflicting reports that the 65E was better than the 60E or the 60 was better. So just to be on the safe side I pulled a wiring harness and computer off a 98 bonneville N/A from a junkyard and am pricing out a used 4t65e HD, just to be on the safe side.
Since my other thread in performance hasn't gotten too much feedback, which is going to be less headache in the short term and long term?
Reasons to stay with the 60:
I have pretty much all the parts, just need to source a decent overhaul kit
Not too much guesswork with the computer
Reasons to move to the 65
Stronger than the 60 (?)