I need a new tranny now should i rebuild it or replace it anyway it's a v6 700r4 and dose anyone know how much horsepower a v6 700r4 can handle thanks in advance Dave.

 

If you are not swapping to a v-8 and the tranny is rebuildable, I would just get it rebuilt. I will be able to handle just about anything the v6 can throw at it, unless you go with a turbo setup or something.

 

Actually ive got a tweaked 3.4 liter in the works that should have about 350+ horse with a supercharger and i dont know if it can handle the extra power thanks Dave.

 

Get your TH700R4 rebuilt by somebody who knows something about making them better. I know a certain '65 Impala SS w/454 and TH700 that I'm sure is making a good bit over 350 HP - he's been running and driving it with that combo for over two years. The tranny has been the least of his worries. His car certainly weighs more than your F-body, too.

FWIW, he paid $650 for the built tranny ($200 for core, $450 for rebuild) - a better deal than most of us would get, but illustrates that you don't have to spend 2 grand to get the job done.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/LB9 block, ZZ3 cam and intake, TBD heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.