Valvetrain Geometry

Newbomb Turk said

Is the SBC 45 degrees? I though it was 42.

Now I have to go look it up.

Edit: it is 45 degrees. But the 289/302 Dorf is 39 degrees. I thought there was a weird lifter bank angle in there.

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That was sorta my question. 48 degrees seems to be the "perfect" angle. Only 3 degrees from 45. 11 degrees from 59. What I was getting at was, I'd rather have 45 than 59. lol Can the stock blocks lifter angle be "corrected" to 48?