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GM Performance
GM Performance Vortec Cylinder Heads

GM Performance Vortec Cylinder Heads

Add Vortec power to your small block!

These cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 HP increase over earlier cast iron small block heads. Features include 64cc fast burn combustion chambers, 170cc intake runners, and a high-velocity LT1 port design. They require the use of a Vortec-style intake and self-aligning rocker arms, and come complete with 1.94 in. intake/1.50 in. exhaust valves, springs, and retainers.


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GM Performance 12558060 - GM Performance Vortec Cylinder Heads

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  • GM Performance 12558060 - GM Performance Vortec Cylinder Heads

Cylinder Head, Vortec, Cast Iron, Assembled, 64cc Chamber, 170cc Intake Runner, Chevy, Small Block, Each

Part Number: NAL-12558060

Estimated Ship Date: 11/23/2009

GM Performance 12529093 - GM Performance Vortec Cylinder Heads

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  • GM Performance 12529093 - GM Performance Vortec Cylinder Heads

Cylinder Head, Cast Iron, Bare, 64cc Chamber, 170cc Intake Runner, Chevy, Small Block, Each

Part Number: NAL-12529093

Estimated Ship Date: 12/8/2009


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