High RPM for FE 427 Dove-6949-I

Aluminum Tunnel Port Heads: 88 CC only. These heads are very Hi RPM oriented and should be used on properly set up short block to handle Hi RPM's. These particular heads are streetable in a light car on a very large engine like 450 to 500 C.I.D. These heads have Hard Seats, Aluminum Bronze Valve Guides, and a Thick Deck.