Dyno Tuning Basics - Jets, Timing, Camera, Action
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While slowly accelerating through the gears, Keith noted that, even at light throttle, the Tempest was still in excess of 11.5:1 air/fuel ratio, so it was time to work on the primary side of the carb. After quickly removing the front bowl, the No. 79 jets were replaced by No. 76s. On the following pulls, the horsepower increased marginally but the torque started to increase substantially. As fuel was pulled out of the primary circuits, the car was crisper going through the gears.The results were 376.9 hp and 439.3 lb-ft of torque; a gain of 1.7 hp and 8.6 lb-ft of torque. View Related Article
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