Edelbrock 60559: Performer RPM454-R Rectangle Port Aluminum Cylinder Head for Big Block Chevy
Performer RPM Aluminum Cylinder Heads - Rectangle Port
Big Block Chevy 396-502ci Rectangle Port Valve Springs for Hydraulic Flat Tappet Port Volume: 315cc/110cc Valve Size: 2.19"/1.88" 118cc Combustion Chambers Max Lift: .700" Assembled, Sold Individually