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25 LS7 Nitrous Test: Since we already had a carbureted LS7 on the dyno and an NOS Cheater plate nitrous system designed for the 4500 Dominator carb, why not take this opportunity to combine the two? With jetting designed to provide 200 hp, we heated the bottle until the pressure exceeded 900 psi, purged the nitrous line, and retarded the timing by 6 degrees. The result was a peak power reading of 1066 hp and 950 lb-ft of torque, but the power settled comfortably just below 1,000 hp. There was more power available through tuning and additional jetting, but the results on this LS7 stroker were plenty impressive.