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

AFR emissions legal (CARB #D-250-4) 210cc LSx heads are the cost effective performance choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust and chambers, A356 aluminum castings, Titanium retainers and high quality components throughout. Recommended for street, towing, or street/strip engines with displacements up to 383 cubic inches, operating up to 6300 RPM. Requires minimum 3.900 bore for intake valve clearance. 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° _230cc_65cc_Emissions Legal_ 3.900 Bore_Assembled
Price $2,427.00

P/N: AFR-1660
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 230cc Intake Runner
  • 65cc Combustion Chamber
  • 3.900 Minimum Bore
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_LSx_15°_210cc_66cc_Emissions Legal_3.900 Bore_Assembled
Price $2,238.00

P/N: AFR-1510
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 210cc Intake Runner
  • 66cc Combustion Chamber
  • 3.900 Minimum Bore
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_LSx_15°_230cc_62cc_Emissions Legal_4.000 Bore_Assembled
Price $2,427.00

P/N: AFR-1610
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 230cc Intake Runner
  • 62cc Combustion Chamber
  • 4.000 Minimum Bore
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_LSx_15°_230cc_72cc_Emissions Legal_4.000 Bore_Assembled
Price $2,427.00

P/N: AFR-1630
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 230cc Intake Runner
  • 72cc Combustion Chamber
  • 4.000 Minimum Bore
more info