SBC Heads 993, 882, 0r 624?
1976-77 350/275 ihra /287nhra
1976 is allowed 993, 882, 624
1977 is allowed 882, 624
There are others listed, but i know these are the common ones. I've always heard that 882 and 624 are virtually identical, but that 993 were a better head. Anyone know for sure?
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