4l80E Strength
and I own a 65E myself.... If I wasnt an idiot, I would have haf FLT build me an *)E and do the conversion the first time rather than going through two of their level 5 65's so far.... great trans's but 4500#'s + N2O = boom....
I doubt there is any durability difference for normal driving use in a car. Assuming you had any kind of power to actually need this trans, wide open OD usage would only be possible for a very short time.... unless you had a place to run 100+mph for miles on end. Most usage would be for economy only.
The early front coolant lines are much easier to adapt on the f-body. I got the early style for this reason.
Jim



