The VFactor 23° v2.70/250cc LBSR is a Large Bore cylinder head. This cylinder head is an excellent option for 421-434 CI engines.
Heads can be purchased bare or fully assembled.
4.155" Fixture .200 141/113 .300 201/155 .400 248/189 .500 290/212 .600 318/230 .700 325/241 .800 330/248 .900 334/252 1.000 338/254
2.820 sq in Avg CSA 2.700 sq in Minimum Size 5.470" Port Length 250cc Runner 1.3020" x 2.300" Opening 2.125" Intake Valve with 33º Back Cut 1.600" Exhaust Valve 64-72cc Chamber
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