Good Cam Choice?

Newbomb Turk said

That’s what I used to think but Godbold says in his book that they use the wide LSA for piston top geometry. He says even a Pro Stocker (pre EFI and rev limit) can use a tighter LSA but the valve pockets get too deep and the BSFC goes up. So they widen the LSA to get the valve notches less deep

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Billy’s a smart, smart dude with undoubtedly way more knowledge/experience than most so I wouldn’t dare question him. I have personally watched a dyno test where a 121 lsa carried 8 or so more above peak (over something like a 108 lsa) and extended the curve out another 200 or so rpm on a 478cu in, 8000+ rpm big block so that’s where my knowledge comes from. There are so many damn factors to consider as to why things happen or are happening, and I certainly get that.