VFactor V2.8 (240cc) SBF Cylinder Head LB
The head features a .750 raised exhaust, 20º OEM valve angle, 63cc chamber, A356 USA alloy! We then spent extensive time wet flow testing the combustion chamber to get the exact shape needed and a better spark plug location. We have added our solid rocker boss and revised valve location for a very stable valve train. This head is for Large bore 4.125 minimum.
Standard Assembled Package includes:
Ductile Iron Valve Seats
8mm Stainless Steel Pro Valves
PAC 1226 .800" Lift Valve Springs
Wilkes Performance Titanium Retainers
Wilkes Performance Locators and Machined 10* Locks
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Technical Specs
V2.80PF/SBF
240cc
63cc chamber
2.125/1.600 valves
2.80in² pinch
4.940 port length
2.96in² AVG CSA
50º seats
SEE FLOW SHEETFlow Numbers
4.155" Fixture
.200 140/114
.300 211/168
.400 268/210
.500 305/288
.600 328/258
.700 341/270
.800 350/272
.900 355/275
1.000 357/275General Recommendation
Wilkes Performance assumes no responsibility for damage if the end user builds an engine without properly verifying he has enough piston to valve clearance (depth and radial clearance both checked). It is recommended for a minimum depth of .080″ on the intake valve and .100″ on the exhaust with a radial clearance of .030″ minimum around the perimeter of each valve. It is the customers responsibility to verify proper piston to valve clearance.