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You are here: Home > Cylinder Heads > Air Flow Research Cylinder Heads > Chevrolet - Big Block

Big Block Oval Port - 24° _ Big Block Rectangular Port - 24° _ Big Block Rectangular Port -18°




Chevrolet - Big Block 24° - Oval Port
AFR MAGNUM cylinder heads for the Big Block Chevy Oval Port are designed with runner volumes of 265cc, 290cc, and 300cc. All AFR heads are made with A356 aluminum and are equipped with high quality components throughout. Component upgrades and different machining options are available to customize your AFR heads for your specific build. more info
Chevrolet - Big Block 24° - Rectangular Port
AFR MAGNUM cylinder heads for the Big Block Chevy Rectangular Port are designed with runner volumes of 305cc, 315cc, 325cc, 335cc, 345cc, 357cc, 377cc and 385cc. All AFR heads are made of A356 aluminum and are equipped with high quality components throughout. Component upgrades and different machining options are available to customize your AFR heads for your specific build. more info
Chevrolet - Big Block 18° - Rectangular Port
AFR Magnum cylinder heads just grew by 1 with the new AFR 18° cylinder head. Built specifically for high horsepower race applications the AFR Magnum 18 flows and impressive 498cfm @ 1.000" lift with a 457cc runner, 90cc combustion chamber and 143cc exhaust. Available with Copper Seats and Ti/Inconel Valve as options. Get A Pair™ and dominate the track! more info
Chevrolet - Big Block 24° - Rectangular Port - Enforcer Series
AFR 325cc Enforcer Cylinder heads for the Big Block Chevrolet feature Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location and performance. This budget friendly head is perfect for your 509 to 540 Cubic Inch operating below 6500 RPM. They come fully assembled with the identical components found in higher end CNC ported cylinder heads; including ARP rockers studs, PAC Racing springs, viton valve seals, AFR adjustable guide plates, machined bead valve locks, hardened spring seats and ductile iron seats in addition to one piece 8mm 21-4N Stainless Steel valves. They are available without any parts if you prefer to set them up in-house. Sold as a single piece, 2 are required per engine. more info