4l80e
#2
go for a turbo 400 easier to build and last longer if u beat it alot. if not so much ur right a 4l80 is the way.I work at the gm plant in Michigan that builds that trans and it is about to go out of production.we build 4 different types of a 6 speed auto now. Rob
#3
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Yea, I may well go TH400. Was just trying to keep "some" highway manners. With 4.30s it wont like highway cruising, course thats not what it will be built for either.