So we had the 2003 Silverado 1500HD dyno tuned!! OMG the results were amazing. We did a swap from the old engine of an LQ4 to an LY6 with a Z06 Corvette camshaft, LS3 throttle body, stock internal parts, and some normal bolt
on parts- intake, headers & electric fans.
I have the dyno tune sheets posted for you to review but basically the truck has max torque with 340ft lbs & 340hp at the rear wheels. As you know this is a full size- 3/4 ton pickup truck, not a small drive train by any means. The numbers equate to around 440hp & torque at the flywheel. Not bad for a stock motor and stock camshaft.
Big thanks to the guys at UMS Tuning for performing the dyno on the truck!!