PROJECT LOOKS. MUSCLE. LONGEVITY
PART 8: BUTTONING UP THE REAR END
If you’re an avid reader of Diesel World magazine, this truck should be pretty familiar as we enter Part 8 in the build on this 2012 2500HD LML Duramax. Purchased used in November of 2017 with 117,000 miles on the clock, this basically bone-stock truck that had no idea what it was in for. GM engineers did a great job with the 2011-2014 trucks and the LML powerplant is a solid performer, with more than 370 hp in stock form. They’ll do just about anything the average truck owner could ask, but let’s be honest—we aren’t average truck owners.
We’ve upped the power a little (an extra 127 hp/217 lb-ft to be exact) with the help of the Jammer Stage 2 kit from Edge Products. We’ve improved airflow through the engine with a high-flow intercooler pipe from Deviant Race Parts, and we extended our range between fill-ups with a 57-gallon replacement fuel tank from Titan Tanks. The suspension has been upgraded with Bilstein shocks and a leveling kit from Kryptonite Products. To better fit our needs for heavy towing in the summer, a Curt Double Ez-lock gooseneck hitch and some airless rear suspension bags from Supersprings were installed. Mickey Thompson Baja ATZ P3 tires and 20-inch SD-5 wheels offer an aggressive look with great on/ off-road performance. With plans of adding more horsepower and torque soon with a bigger injection pump and turbocharger, this month we’ll be giving the rear end a little attention to ensure it can handle and put that power to the pavement safely.