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Old 12-29-2012, 08:35 PM
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Your static compression with that cam and stroke etc will be 11.4 ish to one and the dynamic will be around 9.1 to one. Way to high for any pump gas, and... that is figured with the block decked and a .045 quench height.
Without a good quench , the chamber shape on the heads you have wont do diddly for you. You wont run on pump gas without it detonating itself to death.
If you deck the block, get a good quench,run a slightly larger duration cam, keep the cooling system working very well, keeping the engine at 170 degrees F (or a bit less) you will be on the edge with 92 octane.
Here is a little chart for dynamic comp Vs. octane Vs. temperature
I stare at it for hours sometimes
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