Hydraulic Roller 4.060 " Bore LS7 Heads suit OEM style Rocker Gear. Valve Seat Upgrade:CHE Bronze Alloy Intake & Exhaust Valve Seat 300" Intake valve approaching 500

300" Intake valve approaching 500 CFM

9" of Minimum Cross Section

Pistons are available from CP

Valve Covers to suit our SC2 Ford and LS - CR Cylinder Heads

Hydraulic Roller 4.060 " Bore LS7 Heads suit OEM style Rocker Gear. Valve Seat Upgrade:CHE Bronze Alloy Intake & Exhaust Valve Seat 300" Intake valve approaching 500CID LS7 4. 060" Bore Hydraulic Roller cylinder heads feature factory LS7 intake valve locations with a shifted exhaust valve location to clear the smaller bore and accept OEM or aftermarket OEM Replacement Valvetrain Rocker Gear. Valve lengths for our hydraulic roller cylinder heads measure 5. 550" OAL Rocker arm pedestals are machined into our shaft mount rocker pad area, making them extremely rigid with the rocker boltsc engaging deep into shaft