TEA has some good flow quantities on 243 heads and I've a set headed that way, but, searching thru builds online vs bbc builds, thinking about 310 cfm at . Now I switched to a 385 psi double spring set, caddy race lifters plus the hollow ingestion valves. Hoping that https://lombok-directory.com/listings13370378/not-known-factual-statements-about-chevy-parts