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Vintage Pontiac Dyno Tuning

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Evidenced by the fact that the engine was responding favorably to leaner mixtures, a final front jet swap to No. 72 jets from No. 76s was performed. Horsepower fell off to 375.7, but torque increased slightly to 457.5. The air/fuel ratio continued to rise to 11.5:1.
Dyno Tuning Basics - Jets, Timing, Camera, Action

Evidenced by the fact that the engine was responding favorably to leaner mixtures, a final front jet swap to No. 72 jets from No. 76s was performed. Horsepower fell off to 375.7, but torque increased slightly to 457.5. The air/fuel ratio continued to rise to 11.5:1.  View Related Article

 

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