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The LM2 Duramax is only a few years old – it’s natural that the market takes a bit of time to introduce performance parts considering a lot of these trucks are still under warranty. However, in the case of the LM2 the biggest inhibitor to mods and upgrades has been tuning. Up until about March…
The 6.2 EcoTec3 is the biggest and most powerful engine offered in half-ton trucks. While it’s got a good amount of power, what’s not fun about adding some more? With just a few basic bolt-on modifications you can get the 6.2 EcoTec3 up to around 500whp, at which points aggressive cams or forced induction will…
Wish you bought a 6.2 EcoTec3 instead? Just kidding, the 5.3 is an awesome platform that can be even better with the addition of some performance upgrades. Some tuning and E85 fueling can get the 5.3 EcoTec3 close to the power of a stock 6.2. Toss a few other bolt-ons in there and next thing…
The 4.3 EcoTec3 is the smallest engine of the EcoTec engine family, and also the only V6 available. It’s smaller size of course results in a good bit less power and towing capacity than you get out of the V8’s in the family. While the 4.3 EcoTec3 is built the be heavily modified, there are…
The 4.8 Vortec produced solid power levels for its time, but would certainly be considered underpowered for todays era. Fortunately, this is an LS-based engine platform and it can handle some decent additional power with a few bolt-on upgrades and some boost. In this guide we’re going to cover how you can build a 450whp+…
Finally, a turbocharged engine option for GM trucks. The awesome thing about turbocharged engines is you can add a lot of extra power very easily with just a few basic bolt-on modifications like tuning, intakes, and exhaust systems. In this guide we’re going to discuss how you can add up to 100whp to the 2.7…
If you’re looking to add some extra horsepower and torque to your 5.3 Vortec then a cold air intake is a great bolt-on modification. An intake upgrade can add up to 15hp and torque when tuned, offering some decent power gains in addition to a number of ancillary benefits like better throttle response and improved…
Looking to build a 400whp+ 5.3 Vortec? If so, a supercharger is going to be a great option to help you get there. The Vortec LS-based engines respond extremely well to boost, both from superchargers and turbochargers. While we opted for the turbocharger route on our 5.3 Suburban build, we heavily weighed the idea of…
Now retired, GM’s 4.8 Vortec engine earned a reputation for itself as a solid and reliable power plant for nearly two decades. With no AFM, minimal problems, and a strong block capable of over 500hp the 4.8 Vortec was a great engine. We’re covering the engine in depth starting with the history, specs, and technical…
GM released the 6.6L L8T gas engine in 2020, producing a solid 401hp and 464lb-ft. of torque. While these are great power numbers, they fall a bit short of the L5P diesel alternative. Fortunately, the L8T has some gas left in the tank, and a handful of performance upgrades can add some decent horsepower gains….
The 7.4 Vortec put down 290 horsepower and 410 lb-ft of torque which is nothing crazy for a 454 cubic inch engine. Fortunately, GM overbuilt these engines and then underpowered them, leaving a ton of room for performance upgrades. With internals that are good for over 800hp and a block that can handle more than…
The 4.3 Vortec has garnered a reputation for its reliability and durability. While the engines aren’t the most popular or robust for performance upgrades, there is some room for improvement and power gains with a few bolt-on modifications. With the factory internals limited to around 300whp, we’re going to discuss five upgrades that can get…
