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09-10-2019, 09:01 AM | #1 |
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Join Date: Oct 2013
Location: lousiville Ky
Posts: 2,645
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GMC V6 Cylinder Head 2436647
GMC V6 2436647 cylinder head, is this a magnum big port head. Searched and have not found any information about whether big or small port. Certain information shows as 401/478 engine head. Thanks for help determine port size.
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