For sale is a pair of Chevy BBC cast-iron factory heads. These are casting code 3999241 and both date coded 1971. These came off a good running 1972 454 4V car whose owner upgraded to a set of AFRs. These are the "large-oval" port version with 113cc open chambers. These heads have screw-in studs and pushrod guides installed and what look to be recent aftermarket springs. Other than that they look stock with no cracks or damage. Some bigger valves and associated bowl work really wakes these heads up but they are known to flow well as-is. $300 cash, no trades.
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If this ad is still up, I still have them. I don't need help selling them. Willing to meet in Griffin but cannot travel far to meet.