ProComp Cylinder Heads
In order to keep cost low I decided to use an older cast iron Camaro block. With a nice set of 59cc ProComp heads with 210cc intake runners. I knew none of the stock heads would come close to the flow I needed to hit a true 500hp actually to the rear wheels.
These came built with a nice set of springs 2.02″ undercut valves stems and high quality Bronze guides.
I got my set from a machine shop that sells on eBay.
I also got some support equipment at the same time from the same seller. A nice set of roller rockers head bolts and stud girdles. Just because I knew I was going to be pushing them way more than I should so figured a nice set of poly locks and Stud Girdles should help it live a little longer. I was not trying to build a grenade.