GM Performance Parts BB-Chevy Cylinder Heads

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GM Performance Parts service replacement cylinder heads are direct replacements on most 1990-and-later GM Big-Block 454-cubic-inch and 502-cubic-inch engines. These brand-new cylinder heads meet GM's stringent quality standards and provide excellent service and durability not found in used cylinder heads. The cylinder heads have rectangular intake ports1, which are larger in volume and designed to enhance high-rpm horsepower. These service replacement heads are ideal for Big-Block street machines that also see drag strip action.