Here’s an overview of the Chevrolet 5.3L Gen III LS engine along with some of the problems engine builders have encountered.

We grab an LQ4 LS truck engine from a junk yard, rebuild it, toss on a carburetor and made 464 hp on the engine dyno!

Check it out as we fix up the fuel and spark system on our 5.3 LS engine that we got at Dave's Goldenwest Auto Wrecking with some parts from Lokar, Milodon, Holley/Weiand, ARP, Professional ...

General Motors' LS series engines have been around since 1997, and have one key design feature that enables upgrades that significantly boost horsepower.