Small Block Chevy Cast Iron Vortec Cylinder Heads

Part # GMP12258060

Completely assembled, cast iron vortec cylinder head has high velocity ports and fast burn combustion chambers for significant horsepower and torque increases. Head is fitted with 1.94" intake and 1.50" exhaust valves, 3/8" rocker studs, springs, seals and locks. A vortec style intake manifold is required. Heads sold individually.

NOTE: The valve guide bosses must be machined when using a camshaft with over .475" lift. Valve seats may be machined to accept 2.02" intake and 1.60" exhaust valves.