I have a 400 SB with a 750 holley and will be adding afr 190 heads. I am wondering what kind of cam i would need to get.

 

you'd need to get a good one if you want to realize your engines full power potential. actually what you need to do is provide some more details. what car, trans, rear, intended application, compression, induction and exhaust, stall speed if automatic and anything else you can think of.

 

Check out Comp Cams website... there is a form you can fill out to help you decide what you need.