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2 With the Nova strapped down to Tune Time Performance's Mustang dynamometer, we were anxious to find out the baseline power and air/fuel ratio. We would be looking for a safe A/F of 12.5:13.1 (peak torque to peak hp A/F) during each dyno pull on this carbureted, naturally aspirated engine. If the A/F is below 12.5, it's too rich, above 13.1 it's too lean. Rewards of a proper A/F will be gains in performance and economy. Notice the prop rod (OK, shower curtain rod) holding open the fiberglass 2-inch cowl hood and its unfinished underside. This is what was on the car when it was purchased.