440 factory heads foodchain....

EL5DEMON340 said

Thats about right, anytime you can come across 915's grab them they do make a great street head,

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Keep in mind there were 2 versions. One w/ the 1.60" exhaust and one with the 1.74" (HP). The smaller valve heads can easily be opened up to accept even a 1.81" exhaust valve. The ports are the same.