Good point. I would say"theoretically" they will help.
The engine needs to be able to take advatage of higher octane.
Clevelands are very touchy on the subject and the pump gas available known as premium isn't high enough, octane wise, in my experience, to help the situation.
The 289 is just the opposite. That thing will run on Buttery Nipples and not ping.
I think it has to do with the shape of the...combustion champers. Whew, almost slipped again.
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