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  1. 6-david-5

    Magnum head choices for my mild build

    Hey gang I want to sanity-check my line of thinking on my 5.9 Magnum engine. I want to install this in my '65 Valiant Convertible, but I'm concerned about using the stock Magnum heads. I'm aware the stock heads have a propensity to crack between the intake & exhaust valve seats, but I have...
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