Description
1.870″ Intake valve with 45 degree seat angle 1.750″ Exhaust valve with 45 degree seat angle 21-4n material, with factory stem and bead lock Drop- in with Our performance 12v head, will fit in OE head with machining of the seat. You must run a dual spring with these valves due to the added mass in the valvetrain. With single springs and larger than OEM valves, valve float will occur which can cause damage to retainers locks, valves, head, piston, turbo, wallet and relationship with your significant other……
When machining valve seat on OEM head to fit these larger valves, make sure you set valve face at .055″ from cylinder head surface.
