Reply to "How much vacuum should my Pantera's engine have at idle?"

jffrMember

Seven inches of vacuum is normal for a big cam. My last engine would only idle at about five or six inches of vacuum at idle at 4100 feet above sea level. It would go up a bit as the altitude dropped, which is normal. My new engine only idles at about eight or nine inches of vacuum with the idle set at 900 rpm.

8/16/193:45 AM

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