how well do these 6sp trans hold up powershiftin on NOS

NdaCut

 

well if you are powershifting on NOS its not the tranny you should be worried about, you should be worried about hitting the rev limiter and spraying N20 with no fuel.

these trannys hold up to 550 600 wheel hp before anyone has really had any problems, so unless you are running a 250 shot i dont think you have anything to worry about.....