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You are here: Home > Cylinder Heads > Air Flow Research Cylinder Heads > Chevrolet - LS Series > Chevrolet LSx - Cathedral Port - Competition


AFR max effort cathedral port head for the LSX platform is recommended for race applications or radical Pro Street builds with displacements up to 454 cubic inches, operating at or below 6800 RPM. Requires a minimum bore size of 4.000 to clear the standard 2.165 intake valve. AFR heads are available bare (without parts), call our tech line for details.




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AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_LSx_15°_245cc_65cc_Competition_4.000 Bore_Assembled
Price $2,521.00

P/N: AFR-1680
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 245cc Intake Runner
  • 65cc Combustion Chamber
  • 4.000 Minimum Bore
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_LSx_15°_245cc_73cc_Competition_4.000 Bore_Assembled
Price $2,521.00

P/N: AFR-1690
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 245cc Intake Runner
  • 73cc Combustion Chamber
  • 4.000 Minimum Bore
more info