Does this prove David Vizard's 128 lsa formula ?

Bewy said
You really going to rely on 'Adv duration' numbers?
The Chrys cam & the Pontiac cam have 225 & 224 @ 050. Their adv numbers are 284 & 301.......
Or two Crane cams, both 273 @ 050, but 308 & 330 Adv duration.

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I’d explain to you why you use seat to seat timing but you can’t learn.

And of course if your god Vizard doesn’t say it you don’t know it.

I wouldn’t buy another DV book with a gun to my head.

Have you ever even seen The Horsepower Chain? That one book exposes a lot of garbage put out by lots of people.