olds307 and 403 said:Can you tell what pistons are in it? If it is the big dish pistons, consider the #2 heads you have. Keeping it Olds, much easier and cooler.
dogshit said:If you want the capability of 20 mpg stick with; 200-4r, lock up torque converter, Q-jet, and a cam with 230 @ 50 or less duration. Bigger than stock valves with bowl work and a performance valve job along with adjustable vacuum advance for optimal timing adjustments/curve will give you the power you want without needing to over cam it. Real nice strong crisp driver. 8) Well strong driver is a relative term but for what most people would consider as a strong driver.
I don't know what parts you have for what compression or what fuel you want to run on ie 87, 93, but most people are too conservative with compression. Naturally it has to match your cam & fuel but in general more compression is more fuel burning efficiency ie both fuel economy and power. Detonation resistance should primarily be handled (when building an engine as I believe you plan to) with proper quench, cam selection, timing curve. Sorry to ramble you cool project going.
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