To rebuild or buy new

[Rattler]

Originally Posted by Highway Star

You'll lose more power spinning a TH400 than you will a TH350. You can definitely find a TH350 that will take the power you guys are making. If you can find a worthy shop, a rebuild and "beef up" are probably the best option.



If I ever have the $ for a transmission, I'm getting an overdrive. Either a 700R4 or a 2004R. Those both have lock-up features, and real nice first gears. The 700R4 requires a shortened driveshaft, but the 2004R doesn't, from what I've read, you only need to move the crossmember a few inches. Either one of them will set you back well over a grand with a converter though.

This is true, but it's not a very noticeable loss at all. Especially with as much horsepower as he will have. Turbo 350's can be built very strong, but it costs and arm and leg to match the 400's strength.