Impala Tech - View Single Post - 427 Engine rebuild
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post #9 of (permalink) Old 12-01-2019, 04:25 PM Thread Starter
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Join Date: Sep 2018
Location: North Bellmore (Long Island) NY
Posts: 22
In general it is just tired. doesn't ping with 93 octane, I'm sure the heads are worn to enable it to run on 93 octane. Been together for 50 plus years.
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