The VFactor 23° v2.50/227cc SBSR is a dedicated Small Bore Cylinder Head. This is a great option for 4.060" bore, 389 CI and smaller engines that require more airflow than the VFactor 23° v2.35/205cc SBSR.
Heads can be purchased bare or fully assembled.
- 4.060" Fixture
- .200 140/108
.300 190/150
.400 241/184
.500 280/210
.600 300/225
.700 310/234
.800 315/238
.900 318/244
1.000 320/247
2.530 sq in Avg CSA
2.470 sq in Minimum Size
5.450" Port Length
227cc Runner
1.320" x 2.230" Opening
2.080" Intake Valve with 33º Back Cut
1.600" Exhaust Valve
62-68cc Chamber
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