Finally, performance has the intake manifold, shorter runners and a single nonstaged two barrel throttle body for lower Hoodline and higher top RPM. See 500 HP, how you get your Viper with performance parts from Mopar 525 lb-ft torque and 505 cubic inch displacement can personalize the Viper high-performance V10 Engine has a large hole cast-aluminium block and a long crankshaft.