LS2 Intake Manifold Porting - LS2 Stealth Mods
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The Shaner S2 throttle body was swapped in place of the stock throttle body in minutes and, after allowing a sufficient cool-down period, the GTO was cranked back up on the chassis dyno. When complete, the throttle body netted a 3 hp peak increase but, more importantly, average horsepower and torque followed throughout the entire rpm range. Peak horsepower was 351.7 (+3), torque 353 lb-ft and the averages were 328.9 hp (+2.4) and 337.2 lb-ft (+2.5). The correction factor was 1.06. View Related Article
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