I'm just saying I don't know how many times on this site I've seen people say a cam swap ain't gonna give you 30/40/50 plus hp on a stock ish motor this swap made 75 hp.
I think it's much more subjective though. I'll add I tend to be a pessemist when it comes to expectations...lol
Posting engine dyno testing is primarilly an exercise in promotion. Precious little about a dyno testing cell mimicks that engine in a real car. Dynos are tools only. It is very easy to show a 500hp 340 on a dyno. It's much harder reality to show a time slip saying the engine makes 400hp at the crank based on MPH and weight.
From a bone stock cam, to a performance cam, with no other changes, may net huge, or may not. The person asking mave have a mechanical reason why the cam they're using doesn't work (like the shorblock and/or heads are whipped or it's in wrong or not matched with springs or they can't tune). Or that poster has a performance engine and thinks a jump from a moderate cam to a large cam will gain that. Most times huge gains are simply not possible by only changing one part of the system.
It's not impossible. But is certainly improbable.
