Main caps...

How much HP are stock BB main caps with studs good up to???

You'll start to get cap walk at around 550-600 horse.

Studs should help abit.

You will get a differant answer for about everyone you talk to. I have heard from 550 to 800 on studs with the stock caps. Motors in the 700 to 800 will do better on the stock cap if the have an aluminum rod. The RPM will also play a big part on cap life high comp. steel rods, and 7K plus RPM will work against the rod.

Right now I'm working with a 383, ported stock heads 11.5:1 comp, .509 cam...
I never got the bottom end balanced (dumb move). I came into a steel crank so while it's apart and getting balanced I figure I'd go with new caps if it was called for.. I think I'm real safe...