Direct Injection 5.3L L83 engines are starting to show up in salvage yards, but how do they compare to the super popular 5.3L Vortecs that have been a mainstay of LS swaps? We were a bit skeptical of ...

Modifications for your 5.3L Vortec V8 engine are a lot like eating potato chips ... you can't stop at just one. It starts innocently enough with a cold air intake, because hey, who doesn't want better ...

The two-part question was a simple one. How much boost will a stock 5.3L short-block withstand before the proverbial Big Bang and what is the resulting power output? The web is chock-full of ...

In this stage of the refresh of our ’04 Chevy Avalanche 1500 Z71, we’re tackling the engine. Like millions of GMT800 pickups and SUVs, ours is equipped with the venerable LM7 iron-block 5.3L Vortec ...