What gear for th400. I have two options...3.0 or 3.25
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#10
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id say 350 gr. no transbrake ur gona need the little extra gear to keep the 60ft. evan with a brake id still think a 3.50 would be plenty. my budie is running the 3.50 gr 28" th400 combo arround 650whp and works great with a lot of gear left. turbo as well just not turned up the boost cause hes on the stock bottom end.
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I went with 3.00 gear and 28" in my 640rwhp TA and it was almost to much gear.... You need to account for what trap speed you will run, tire size, motor rpm, weight, converter slip, trans gear ratio, ect... ect....