Port Cylinder Head

heads
AFR_SBC_245cc_Competition_CNC_Ported_Cylinder_Heads_Titanium_Retainers_1137_TI_01_ahj

AFR SBC 245cc Competition CNC Ported Cylinder Heads Titanium Retainers 1137-TI

AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 245cc SBC Competition Cylinder Heads. AFR's 245cc "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. NPP stands for "no pushrod pinch", and this is AFR's largest 60/40 valve spacing head. These heads require shaft mount rocker arms for all applications and have extra machining for 3/8 pushrod clearance. Component upgrade and machining options are available to customize AFR Heads to your specific build. AFR Part # 1137-TI. There are many different options available for AFR heads, please view the details section below for the details on these heads. For…
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AFR_457cc_BBC_18_100_Fully_CNC_Ported_Magnum_Aluminum_Cylinder_Heads_3708_PAIR_01_rjjq

AFR 457cc BBC 18° 100% Fully CNC Ported Magnum Aluminum Cylinder Heads 3708 PAIR

AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 457cc BBC 18° Magnum Cylinder Heads. 950, IN STOCK on our shelves. AFRs new 457cc 18° Big Block Chevy heads are our best performing highest flowing head in our BB Chevy lineup. They come standard with stainless steel 2.400 intake valves and 1.800 exhaust valves. The intake port is raised. 500 with the valves rolled to 18° resulting in unparalleled under the curve flow numbers..... Dont be fooled by just peak flow numbers. The combustion chamber comes in at 90cc. This head is ideal for 540CI or larger race engines. This head requires specific pistons, valves covers, shaft mount…
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