I own both carbs. The red one is a Quick Fuel Q750 and the other one is a Barry Grant Speed Demon 850. I'll be using the 850 for now while the 750 gets sent out(new boosters). Eventually I want to dyno them against each other.
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5.3L LSx, Fbody .500 cam, TH400, 4500 Stall, Moser 9"
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