Ported 516’s with OVERsized intake valves

PRH said

I don’t know how there could be any argument about what heads they are.
The number is cast right into the heads.

2.14..... or 2.18.

Does it really matter?

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Exactly what I was thinking. He bought 'um. Run 'um. Whatever size they are...run 'um. There does appear to be a shadow in the carbon for the closed chamber edge.