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Maybe. You'd probably need to keep the timing down a little, and maybe richen the mixture just a little. If it pings, you'd need to back the timing down until it doesn't. It would run better with higher octane.

I disagree. 10 to 1 isn't considered high compression and newer 350's have "knock sensors" that automatically retard the timing if the engine starts pinging.

Most filling stations sell a lot more "regular" than they do "premium", and old "stale" fuel seems to cause more problems than does using regular. But see how your vehicle runs on regular before you decide. Redbeard

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15y ago
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Q: Can you run 87 octane in a 10 to 1 comp Chevy 350?
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