Quote:
Originally Posted by raymondh36965
........ a 100% sure way to figure this out? ........
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With the manifold off, put a “straightedge” on the intake surface of the head. Measure the distances (above and below the head) between it, and the pushrod.
If they are the same, you have 45° bores, if the bottom is closer, than the top, it's 39°.
I don't remember the number, but it's more than obvious.
Norm