10.2 : 1 compression 360 at sea level. Options?

Hang on, a running compression test?
You don't think that raw gas in the chamber is gonna affect the numbers?
Ima thinking they're all low, cuz the gas washed the oil off the cylinder walls.
Ima thinking you better not run 87, but if you do, you better not stand on it!
From post #49, an ICA of 66* in a 10.2 360, should make 160ish psi, at sealevel. And with iron heads premium gas may be needed at WOT. It will idle on 87 just fine. And cruise just fine on 87. But getting from idle to cruise ,on 87, might be tricky.
I wouldn't change a thing. I run over a half a point higher Dcr with aluminum heads on 87E10 with full timing; thats 185psi. You should be fine on 87/89 for all conditions except perhaps WOT,and loaded. Like second gear.
Here's the thing about hi-compression; it makes a more powerful off-idle to midrange, and it ups steady-state fuel-economy. I would strive to keep it.You said no quench so I'm assuming greater than .080, and that will be fine.
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