AFR's 227cc "Race Ready™" and “Competition” heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications). AFR heads are available bare (without parts), call our tech line for details. 

227cc Aluminum SBC Cylinder Heads
Part # Exhaust Port Porting Finish Combustion Chamber
1067 Stock Race Ready™ 75cc
1068 Stock Race Ready™ 65cc
1120 Stock Competition 75cc
1121 Stock Competition 65cc
1074 Spread Port Race Ready 65cc
1075 Spread Port Race Ready 75cc
1124 Spread Port Competition 65cc
1125 Spread Port Competition 75cc

 

227cc Race Ready™ Flow Chart
  .200 .300 .400 .500 .550 .600 .650 .700
Int 148 210 261 296 304 312 315 318
Exh 116 155 204 220 225 229 233 237
227cc Competition Flow Chart
  .200 .300 .400 .500 .550 .600 .650 .700 .750
Int 152 212 260 292 310 316 322 327 329
Exh 120 160 214 230 234 238 241 243 245

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