Vortec Bowtie heads
These are GM Performance parts most powerful cast iron cylinder heads designed for street or racing in the 400-450 horsepower range. As an upgraded production head, they come with bigger valves, a thicker surface deck, and a 66cc combustion chamber, which offer tremendous low-lift flow numbers. They offer you Fast Burn performance in an affordable cast iron head that is often used for short track racing applications.
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