pro-topline alum heads

  • Sponsors (?)


ok guy's this is some numbers on the heads
Intake Runner 180cc Chamber 58cc
Valve Sizes/Length 2.020"/1.600"
Intake Port Test Data @28" of water
.100 .200 .300 .400 .500 .600 .700
72 154 208 254 271 274 276
Exhaust Port Test Data @28" of water
.100 .200 .300 .400 .500 .600 .700
60 121 159 184 193 199 202
so tell me what you'll think about the numbers?