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Old 12-22-2018, 09:49 AM   #2
regan wilson
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Join Date: Mar 2008
Location: tyler texas
Posts: 1,532
Re: High HP guys running a TH400

I cant give you all the details off the top of my head but I can give a few. My transmission is mostly stock internals. I run a John Kilgore planetary (regeared stocker) 2.10 1.31. 4L80 E pressure plate with 4 discs and a wave plate (the wave plate helps take the shock out of the second gear change). Plus a drilled out center support bolt (moves more fluid). We cut the pistons down and run .080 koleen steels with 5 clutches in the drums. and a 20 year old Hipster Trans Brake. In all reality I am pushing the limits of this combo. Thats why I havent made any wide open runs in awhile. It stays healthy just running on the throttle stop. It doesnt take too long to start burning clutches or turning a 34 element sprag over backwards wide open. I've only killed one stock case in all these years. It finally knocked the lugs out of the case, but Im not scared to keep running a stock case. I have another case in the shop I want to start building with stronger and lighter internals.

I'm sure after I babbled all that you are still confused....lol
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