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Designed for big-blocks using general-duty oval port cylinder heads. Use part# M980008 for stock replacement on non-EGR 396, 402, 427 and 454's with OEM 4-BBL carburetors. Part# M980009 is a replacement/street legal part for EGR equipped 454's with OEM 4-BBL carburetors.
M980008 – For use on non-EGR 396-402-427-454 engines with 4-bbl carburetor
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