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GM offers an excellent stock intake-manifold   gasket that uses pins that precisely locate the gasket on the head. It requires no adhesive and uses silicone rubber seals around the ports. The Vortec head requires the late-model eight-bolt intake bolt pattern.
Iron Vortec Head

GM offers an excellent stock intake-manifold gasket that uses pins that precisely locate the gasket on the head. It requires no adhesive and uses silicone rubber seals around the ports. The Vortec head requires the late-model eight-bolt intake bolt pattern.  View Related Article

 

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