AFR’s 245cc “Competition” heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. NPP stands for “no pushrod pinch”, and this is AFR’s largest 60/40 valve spacing head. These heads require shaft mount rocker arms for all applications and has extra machining for 3/8” pushrod clearance. AFR heads are available bare (without parts), call our tech line for details. 

245cc NPP Aluminum SBC Cylinder Heads
Part # Exhaust Port Porting Finish Combustion Chamber
1137-TI Stock Competition 70cc
1138-TI Stock Competition 80cc
1139-TI Spread Port Competition 70cc
1140-TI Spread Port Competition 80cc

 

245cc Competition Flow Chart
  .200 .300 .400 .500 .550 .600 .650 .700 .800
Int 161 224 261 301 311 320 331 337 345
Exh 128 165 214 228 237 238 243 245 250

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