TH-350 or 400 conversion
3-2 down shift at WOT i don't think it will last to long after my build.
ProBuilt Automatics, FLT, Rossler are the first three that come to mind but are by no means a complete list and a few of those guys have customers with 9 second cars running 4L60Es one of those is a 4400lbs Impala running 9.6 at 146mph. Point being don't listen to anyone who says this tranny can't take it, they just used the wrong shop.
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