Description
- Aluminum head assembly
- Used in the 572/620 Chevrolet Performance crate engine
- Completely assembled with 2.250″/1.880″ 11/32″ stem valves
- Valve springs for hydraulic roller cams for up to .632″ lift
- 310-cc rectangular intake port
- 118-cc exhaust port – raised 5/8″
- 118-cc combustion chamber
- Not recommended for engines smaller than 572 cid