58cc Combustion Chamber. Suit Small Block Ford

AFR1451

R1451

Are you looking for big torque and horsepower number? Only AFR's 225cc aluminum cylinder heads will provide you with exactly that. With the largest intake and exhaust runner volumes for our in-line Ford line up, these are the ultimate for NMRA Renegade or Hot Street classes. With lightweight 8mm 2.080 intake valves and 1.600 exhaust valves these heads move massive amounts of air. Combustion chamber volumes of 58cc or 72cc accompanied by 80cc exhaust ports which are raised .375 higher than stock. AFR's new 225cc is the perfect choice for 347 through 427 CI windsors engines operating between 4500 to 8500 rpm. Our trademark 3/4" thick cylinder head deck makes them ideal for heavy nitrous or blower applications. Basic Package Components: 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle RadiusedValve Job Bead Lock Intake Valve, 2.080" x 100L Bead Lock Exhaust Valve, 1.600" x 100L 1.550" OD Roller Dual Valve Spring w/ dampener, 225 lbs on seat, .710" maximum lift 10° Chrome Moly Retainers 10° Bead Lock Keepers 7/16" Rocker Studs 5/16" Guide Plates Viton Valve Seals Hardened Spring Seat Intake Valve Seats Exhaust Valve Seats Bronze Valve Guides