The Stage 2 incorporates all of the Stage 1 features plus a recalibrated idle, off-idle, main, accelerator pump, and high-speed circuits to match any engine modifications, such as intake manifold, headers, ignition, or mild cam change. Features include improved idle qualities, instant throttle response, and maximum torque and horsepower for street/strip and tow vehicles with modified engines.
The Stage 3 Quadrajet is intended for serious street/strip and race applications such as circle track and NHRA stock and super-stock classes. This level uses an oversized 0.149-inch needle and seat assembly, and is the start to this fully modified race system. Main well size is increased and balanced to ensure proper top-end, high-rpm fuel flow. Extensive circuit modifications are done to keep the fuel curve correct throughout the rpm range and to obtain clean idle quality and instant throttle response for consistent race-winning performance.
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The primary throttle bores on our Q-jet were worn and the source of a sticky throttle situ
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Every removable part was disassembled and carefully inventoried before being sent out to b
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The Q-jet's fuel-filter fitting threads were worn. Consequently, the fitting leaked fuel o
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The carburetor's base plate is trued flat on this spinning disc.
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Before the throttle shafts were reassembled, new bushings were installed and fitted.
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Underneath the carburetor's base plate, these two plugs had been repaired. Since then, the