Quote:
Originally Posted by garage_engineer
Thanks for the tips Lance. I'll definitely look up your thread. I think my heads are older AFR ones, but I haven't run the numbers yet. There is not "AFR" stamped into the head, but the pushrod guideplates do say "Air Flow Research" so I'm optimistic that's what they are.
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The older AFR's were not machined @ the ends. I have some SBC 190's & they only have the Air Flow Research stamped on the guide-plates.