We plan to put miles on this Chevelle, and 3-inch systems are notorious for their bellicose exhaust notes. Normally, the Flowmaster American Thunder kit is shipped with a pair of 40-series ...

Walking around a 383-inch LS built from a 5.3L Vortec iron block and LS stroker kit 0:32 440-Inch Big-Block Pump-Gas Mopar Wedge Makes Over 500 HP And a Whole Lot of Torque!