All I can say is Wow!!! Started with Factory qjet, then Eddy 1406, then a Quick Fuel Slayer 600. The QFT seemed to run good but needed constant adjustments. Just installed a 650 thunder AVS tonight. Idles unbelievably smooth, hit the throttle and instant tire spin, and pulls like a rocket to 5500rpm on my mild 360 in a 5500lb 4we. Very impressive carb in case anyone is considering one.So far only adusted idle mixture and speed. I'm sold on this one!!!!
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