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    thunderbolt iv failed looking to run mallory help!

    Hey guys, 1987 sea ray 195/197, 5.0 mercruiser, quadrajet 4barrel carb, thunderbolt iv, alpha outdrive. My 5.0 lost compression in 2 cylinders last season so i picked up at 5.7 mercruiser block and rebuilt it. Installed a mild xtreme marine cam from comp cams, dropped it in the boat...
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