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 post The 5 Best 5.3 EcoTec3 Performance Upgrades appeared first on Chevrolet and GMC Truck Information: Silervado, Sierra, and Colorado.
