AFR aluminum racing heads to suit early Chev small block engines up to 400ci. Lots of money spent and all top quallity gear, jesel shaft mount 1.5 ratio rockers titanium valves, titanium retainers, triple valve springs fully ported and polished thousands of dollars spent on this alone. Im trying to track down the flow chart that i have lost but from memory at 700 thou lift they flow enough cfm to produce 600+ hp. If you are interested in buying i will have to get them retested. Just spent 600 on machining also to clean them up for sale.
