MEL and 385's welcome.
429 ci, 360 gross horsepower 11 years later.
Take your accessory pulley and air filter off and FEEL THE SPEED
accessory drives could sap up to 35 hp. most of the time gross hp was measured with oversized carbs tuned for max power, long tube dyno headers, and other tricks to maximize hp for the literature.
Some were even dynoed underwater for the extra barometric pressure.