To advance or Not

I just ran the numbers.

If he uses my method and goes in 5 ahead, it looks like every other Comp grind.

If he uses my method and goes in 3 ahead, the overlap triangle will be centered.

Either way, I never care where the cam is at at .050 lift unless the lifter bores have been corrected and you use roller cam bearings.

Even Billy Godbold uses the intake center line method because he says it matters more where the piston is at max lift rather than where the piston is at .050 lifter rise. Or .006 lift.

If you want to see what he says about all of this, the article is in the March 2020 edition of Hot Rod magazine.