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The 6-bbl carbs are tricky to get right...That carb throttle shaft should have teflon seals on each side of the throttle bores...If they're shot or missing completely you'll have a massive vacuum leak from the beginning....But if the shaft and/or bore is wore too hard you're better off with new or sending them out... You can't go wrong using Harms...Scott does excellent work....I guess the ride back and forth from over there would be a factor going the rebuilt route



I may be missing something but I have yet to see a production line set of unmolested 6pk carbs with the Teflon seals ever though the shafts are cut to accept them.I've seen them on a lot of 4bbl's,not all and a few over the counter replacements but never an original.