Will the heads on a pontiac 3.4 fit on a buick 3.1
Odessa*Cylinderhead lists the same head for both, however, they also add the following:"MUST HAVE CAST NUMBER AND ON CAST NUMBER 487 WE MUST KNOW SIZE ROCKER BOLT HOLE. IT WILL BE 8mm OR 10mm. ALSO WITH OR WITHOUT AIR INJECTION"You might get the above details and then check some online sites or, maybe have a buddy in the business check to see what will match what you have. Good luck.
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