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What octane should I be running? I'm running a carb'd 302 out of a 92 stang. When it was rebuilt it was bored 30 over if that makes a difference. I don't remember what octane a mustang is supposed to use. Thanks in advance.
Stangs were designed for cheapy 87. If you are pushing the timing up for extra power then you need higher octane. The overbore shouldn't affect octane requirements enough to be a problem. If you have detonation issues with 87, step up a grade.