Quote Originally Posted by jkade72
What year 700r4 should I try to find? Or should I just keep my turbo 400 and find a gear vendors?
Ideally, I would keep the TH400 and look into a Gear Vendors OD. The 700R4 can be built to live behind a pretty healthy small block, but with the kind of torque a big block is capable of, it may not hold up unless you put a lot of money into it.