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You are here: Home > Cylinder Heads > Air Flow Research Cylinder Heads > Chevrolet - Small Block > Chevrolet - Small Block 23° - Small Bolt Hole

Small head bolt hole heads are specifically designed for severe endurance, high compression, high cylinder pressure, alcohol fuel applications. Two head bolts in Small Block Chevy heads are inherently thin with the OEM design. These smaller head bolts add an extra 1/16 inch of material to thin areas increasing the strength of the head. The heads are supplied with four special ARP 3/8 X 7/16 head studs that must be used in this head. AFR small head bolt heads has all the same features and benefits of AFR standard heads.




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AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_220cc_Competition Head_Angle Plug_65cc_Spread Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1203
  • A356 Cast Aluminum
  • .500 Spread Port Exhaust
  • 220cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 65cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_220cc_Competition Head_Angle Plug_65cc_Standard Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1200
  • A356 Cast Aluminum
  • 220cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 65cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_220cc_Competition Head_Angle Plug_75cc_Spread Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1204
  • A356 Cast Aluminum
  • .500 Spread Port Exhaust
  • 220cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 75cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_220cc_Competition Head_Angle Plug_75cc_Standard Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1201
  • A356 Cast Aluminum
  • 220cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 75cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_227cc_Competition Head_Angle Plug_65cc_Spread Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1207
  • A356 Cast Aluminum
  • .500 Spread Port Exhaust
  • 227cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 65cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_227cc_Competition Head_Angle Plug_65cc_Standard Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1205
  • A356 Cast Aluminum
  • 227cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 65cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_227cc_Competition Head_Angle Plug_75cc_Spread Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1208
  • A356 Cast Aluminum
  • .500 Spread Port Exhaust
  • 227cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 75cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_227cc_Competition Head_Angle Plug_75cc_Standard Port_Small Bolt Hole_Assembled
Price $2,215.00

P/N: AFR-1206
  • A356 Cast Aluminum
  • 227cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 75cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_235cc_Competition Head_Angle Plug_70cc_Small Bolt Hole_Assembled
Price $2,575.00

P/N: AFR-1209-TI
  • A356 Cast Aluminum
  • Small Bolt Hole
  • 235cc Intake Runner
  • Perimeter Valve Cover Bolt Pattern
  • 70cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info
AFR Cylinder Heads
AFR Cylinder Heads_Chevrolet Small Block_23°_235cc_Competition Head_Angle Plug_70cc_Spread Port_Small Bolt Hole_Assembled
Price $2,575.00

P/N: AFR-1211-TI
  • A356 Cast Aluminum
  • .500 Spread Port Exhaust
  • 235cc Intake Runner
  • Small Bolt Hole
  • Perimeter Valve Cover Bolt Pattern
  • 70cc Combustion Chamber
  • Angle Plug
  • 7/16 ARP Rocker Studs
  • Adjustable Guide Plates
more info