Sierra 18-4484 High Performance Cylinder Head
Sierra 18-4484 High Performance Cylinder Head, Sierra 18-4484 High Performance Cylinder Head CH350HA: 5.7L Hybrid early style 350 Cylinder Head; 65cc combustion chamber, 176cc intake runner; 1.94 intake valve, 1.50 exhaust valve; Early intake bolt pattern, perimeter valve cover bolt pattern; Note: Replace in pairs