What kind of fuel do you run?
Is this a race car? Then I cannot say.
If a street car,
you can pretty much correlate the gas required to the Cranking cylinder pressure, and to the head material/chamber shape/with a minor adjustment for Quench.
For Iron open-chamber heads, the rule of thumb is
160 psi max on 91
155 max on 89
150 on 87.
Add 5psi for a tight Quench
For closed-chamber alloy heads the rule of thumb is;
200 max on 91
195 max on 89
190 max on 87.
add 5psi for a Tight-Quench.
These numbers assume at WOT, with a max sized carb, and full-timing.
On the primaries only, you can likely run any fresh gas, unless you happen to have a destructive Quench in the redzone of 050 to 080..
Personally, I have been running 187psi or better, even 195 briefly, on 87E10 since 1999; with OOTB Edelbrock alloy closed-chamber heads and a Quench between 028 and 032; with a 750DP, and 34* Power-timing, which is all she needs..
Your results may vary.
if you do a compression test, on a long-time sitting engine;
you gotta do all eight, and when yur done, you gotta do it again but this time with a couple of oil-can squirts, distributed around the rings, left to soak, then pump the excess out with the starter, before you put the gauge back on. Unfortunately, this will make a mess. After the oiling, the numbers should all even up. unless some excess oil stayed in the chamber. The numbers will be always be artificially raised just a bit, due to some oil being stuck on various surfaces. When it fires up, the running engine will burn up the oil. Now she's ready for a true Compression test.
If the engine has recently run, oiling is not necessary, unless it was gas-flooded.
Some engine designs will be able to run a wee bit more pressure than I listed. But my numbers should be safe. Most of us cannot hear detonation with our loud exhausts, and even fewer of us run knock sensors. And detonation, even in it's least destructive form, must be avoided, cuz it breaks parts; if not the first time then soon.
Your job is to avoid detonation at all cost.