Aftermarket Ramps Up for 2014 Chevy Silverado and GMC Sierra

Back in July, sport truck performance package maker Callaway Cars announced it was the first aftermarket company to offer a supercharger kit for the new 2014 5.3-liter V-8 L83 EcoTec3 direct-injection engine offered in the 2014 Chevrolet Silverado 1500 and 2014 GMC Sierra 1500. We're guessing it was no small feat to make that happen given the sophistication and complexity of the new engines and their computer software.

But we noticed Callaway hasn't provided any details about its performance gains and only showed photos of the kit sitting on top of a new Silverado engine. Sure, it released the package price — it's well north of $15,000. We'll assume that means the kit includes quite a few extras.

We've also just learned that a competitor to Callaway, Lingenfelter Performance Engineering, also has a performance kit for the new Silverado and Sierra half-tons; it just released its testing data and it looks impressive. The dyno numbers show the performance package will net an extra 100 horsepower at the rear wheels and more than 85 pounds-feet of torque.

In fact, Lingenfelter even gave us the time slip from the track where the truck tested after the install; it ran a 13.89-second time on 93-octane Unleaded fuel with 3.08:1 gears in the quarter mile. For comparison purposes, although we ran our test trucks at a different time, the 2014 Chevy Silverado 1500 Crew Cab 4×4 (with 3.42:1 gears running on 87-octane fuel) in our ran the quarter-mile in 15.93 seconds (the fastest in that test was the Ram 1500 at 15.40 seconds). We're told pricing for the Lingenfelter kit will mostly likely be under $10,000. Of note, the full kit will offer a two-year warranty on parts and labor and is specifically designed for all-around performance–meaning, they've done quite a bit testing empty and with heavy trailers. 

To see the dyno run results, .

To see the Lingenfelter time slip, .