Forgot to mention, alternator cut out not needed with my set up.
As far as horse power loss for drag racing, the pulley ratio should be a 2 to 1. Alternator speed should not exceed 26,000 RPM. HP loss for drag racing is minimal. We run a '72 all pontiac, alcohol injected, run 8.60's. I have an GM 10SI series on it.

catasswiring