58cc Chambers, CNC Competition Porting

AFR1381-716

R1381-716

These heads come ready for the maximum street/strip Small Block Ford performance possible. AFR's 195cc sport lightweight 8mm 2.050 intake and 1.600 exhaust valves with options for either 58cc or 72cc combustion chambers and 70cc exhaust ports. With AFR's 3/4" thick head deck, it's no problem handling that additional cylinder pressure. Each head is also drilled for the larger 1/2" head bolt for maximum head gasket retention as a standard feature of this serious race piece in street disguise. Basic Package Components: 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports Competition 5-angle Valve Job 8mm Bead Lock Intake Valve, 2.050" stud mount 8mm Bead Lock Exhaust Valve, 1.600" stud mount PAC 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs on seat, .650" maximum lift Manley 7° Chrome Moly Retainers 7° Bead Lock Valve Keepers ARP 7/16" Rocker Studs Adjustable 5/16" Guide Plates Viton Valve Seals Hardened Valve Spring Locator Ductile Iron Intake Valve Seats Ductile Iron Exhaust Valve Seats Bronze Valve Guides