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Kent!
There is one more picture that Gary didn't include - the 74/75 B20F head doesn't have ANY
dips in that location. It is really good (according to the experts) for porting and
can also be milled for higher comp.
I would not recommend milling more than 0.060- 0.080". I ran into a pushrod length problem
on the YP and ended up having to shim the rocker stands because of that.
Seems to be working OK but an undesirable fix. Alternative would have been different
lifters or custom pushrods. I chose the cheap way out. (being Scottish)
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