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Unorthodox Ultra SS System - $304.95 |
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Unorthodox Racing pulley sets on average can provide gains of 8 to 15 HP and 6 to 10 lbs.-ft. on normally aspirated engines and 10 to 18 HP and 10 to 20 lbs.-ft. on forced in duc tion engines. Higher gains can be realized on vehicles that are modified. These gains are obtained in two ways. First, and most important, is the weight loss. There is an average of 2.7 HP gained from every pound lost off the crank shaft. With the lighter accessory pulleys, as much as 15% to 30% more power can be found. 85% of our gains are from weight loss. The rest of the gains are from underdriving, which accounts for about 15% of the total gains. Unorthodox Racing does not push underdriving more than 20% for two important reasons. The main reason is to keep charging systems, air conditioning, ower steering, and water pumps moving fast enough for every day driving. Second, not much horsepower is gained from extreme underdriving.
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