AJPE SBC Billet Cylinder Heads, 2.250 x 1.650″ Valve dia, Copper valve seats, Jr Hoops@ .017″/.018″ out. Includes Intake port & rocker girdle O-rings (pair)

Muscle Head Stage V: Program V3-P1-F12, 2.450″ x 1.900″ valve dia. 102cc chambers. Std Copper intake valve seats, B5 Exhaust valve seats, .025″ Jr Hoops & 9/16″ Head stud inserts. 2.600″ lifter spread, 12ø Exhaust Flange. (PLR only)(pair)