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P119056 Image Large
As you drive the car, the gauge will indicate where the carburetor transitions from the idle circuit to the main-metering circuit. After leaning out the idle-mixture circuit, we discovered a rich main-metering circuit. By adding leaner jets we pulled the part-throttle cruise air/fuel ratio to around 13.5:1. View Related Article
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Chevy High Performance
Chevy Hi-Performance