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




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AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_Big Block_24°_325cc_Enforcer Series_Rectangular Port_122cc_Assembled_Hydraulic Roller
Price $730.00

P/N: AFR-3001
  • A356 Cast Aluminum
  • 325cc Intake Runner
  • Perimeter Valve Cover Bolt Pattern
  • 122cc Combustion Chamber
  • 7/16 ARP Rocker Studs
  • 3/8 Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_Big Block_24°_325cc_Enforcer Series_Rectangular Port_122cc_Bare
Price $475.00

P/N: AFR-3002
  • A356 Cast Aluminum
  • 325cc Intake Runner
  • Perimeter Valve Cover Bolt Pattern
  • 122cc Combustion Chamber
  • 7/16 ARP Rocker Studs
  • 3/8 Guide Plates
more info