Competition Package 58cc Combustion Chamber. Suit Small Block Ford

AFR1426-716

R1426-716

If you need the world's finest street/strip small block Ford head, check out AFR's all new 185cc intake port emissions legal performance cylinder heads. With lightweight 8mm 2.020 intake valves, 1.600 exhaust valves, combustion chamber volumes of 58cc or 72cc, and 70cc exhaust ports, AFR's new 185cc Ford cylinder heads are designed for 302-351 cid engines operating from 1500 rpm to 6500 rpm. A 3/4" thick head deck makes the AFR head ideal for nitrous or blower applications. Available with optional nitrous or blower exhaust port featuring 70cc ultra high flowing exhaust ports. Will not accept rail rocker arms. Hardened pushrods required with cylinder heads #1420 and #1422. High flow 2.020 valves might require aftermarket pistons notched for valve clearance. Note: 1986 5.0L must have pistons notched for clearance. Basic Package Components: 100% CNC Ported Combustion Chambers 100% CNC Ported Exhaust Ports 100% CNC Ported Intake Ports 3-angle Radiused Valve Job Bead Lock Intake Valve, 2.020" stud mount Bead Lock Exhaust Valve, 1.600" stud mount 1.290" OD Hydraulic Dual Valve Spring, 135 lbs on seat, Comp Pkg #8019 .600" maximum lift (upgrades available), #8019 1.270 OD 7° Chrome Moly Retainers 7° Bead Lock Valve Keepers 7/16" Rocker Studs 5/16" Guide Plates Viton Valve Seals Hardened Spring Cup Intake Valve Seats Exhaust Valve Seats Bronze Valve Guides Thermactor Air Injector