cylinder pressure and dynamic compression with different camshafts`

elitesrock2 said
building a solid roller 416 stroker motor and i was wondering about cylinder pressure and dynamic compression and what i should shoot for. wanna run it on 92 octane pump gas. is a 416 with heavily ported iron x heads. looking at the horsepressure article on hughes they shoot for a 165 cylinder pressure with iron heads which put me at 10.5:1 compression and 8.17 dynamic. so is this what i should be looking for or what compression should i play with. inputs are 8 cylinders, 4.070 bore, 4 inch stroke, 6.123 rod length, 10.5:1,63 degrees abdc and 1800 altitude

If you have a tight quench you can run over 8.5 dynamic. For instance I run 8.8 @185 with quench dome pistons and in the guy aboves post , he says he runs about the same. If you are talkng about flat tops with the x's open chamber, I say stay about 160-165 @ sea level w/91 , in line with Hughes, cause I don't want to put you in a stressful spot...but I would go for 8.5/172 Cranking@1800ft and that would take ivc 58, but unless you're making records...kind of small to go changing the cam, just use a thin gasket or mill the heads .018