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

AFR 260cc LS3 “Mongoose” Cylinder Heads feature 100% CNC ported intake, exhaust and chambers using our advanced engineering and flow techniques to produce the ultimate Rectangle Port head currently available. Featuring A356 aluminum castings, titanium retainers and the highest quality components, throughout, they’re designed for 4.000 or larger bore applications up to 454 CI, operating at up to 7000 RPM. Emissions legal for 2007 to 2016 6.2L LS engines under CARB #D-250-5.




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AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_LSx_12°_260cc_69cc_Competition_4.000 Bore_6 Bolt_Assembled
Price $2,471.00

P/N: AFR-1840
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 260cc Intake Runner
  • 69cc Combustion Chamber
  • 4.000 Minimum Bore
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet_LSx_12°_260cc_69cc_Competition_4.000 Bore_Assembled
Price $2,471.00

P/N: AFR-1845
  • A356 Cast Aluminum
  • 100% CNC Ported
  • 260cc Intake Runner
  • 69cc Combustion Chamber
  • 4.000 Minimum Bore
more info