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390 wont idle

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  1. Engine
    Just after jetting up my 670 holley on my 390, I was driving it hard to see how it ran, and it ran great, then after coming to a stop, it barely idled anymore. Prior to it going bad, it idled with my msd box at 12 degrees at around 700rpm in park and it would drop to 500 in drive without ever...
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