Seller notes

This is a pair of original GM high performance cylinder heads for a Big Block Chevy Engine. The casting number on each head is 6272990. These heads are the high performance versions with rectangular intake ports and open style combustion chambers. The 6272990 head was used on the infamous LS-7 454 crate engines and was also a very popular performance head in both automotive and marine applications. What a rare find! These heads just came out of the estate of a long time machine shop owner and pe...

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