LS2 Intake Manifold Porting - LS2 Stealth Mods
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When the rollers stopped spinning, the results of the Vmax-ported LS2 manifold showed that the manifold porting raised peak horsepower by 9, with a similar torque increase of 7 lb-ft. Very similar gains in the average horsepower and torque indicate that the power gains aren't just limited to a narrow rpm range but are up and down the power band. The results: peak hp 357.5 (+8.8 hp), peak torque 360.3 (+7.1 lb-ft), average hp 334.8 (+8.3), average torque 343.2 (+8.5 lb-ft). The correction factor was 1.06. View Related Article
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