It turns out everyone loves a good deal on horsepower.

The story of GM's cancelled V8-powered Holden Colorado SportsCat, the performance pickup that could have taken on the Ford ...

Rated at 375 horsepower, the optional 396-cubic-inch L78 V8 was the most potent engine available in a factory-built Nova.

The humble LS engine remains the undisputed king of swaps, in case you haven't noticed, but why? Spoiler alert: it's about a ...

GM Authority has exclusive video of a peculiar GMC Sierra HD prototype testing what may be a brand-new gasoline-fueled V8 ...

The history of Chevrolet performance engines is usually led back to some kind of production V8 that could be found in just ...

This 1968 Chevrolet Chevelle 300 Deluxe "Post" sedan is a highly documented and upgraded muscle car located in Kagel Canyon, ...

The Lockheed SR-71 Blackbird remains one of the most remarkable aircraft ever produced in limited numbers, with just 32 ...

Trucks used to be pretty easy. You bought a GMC because it was nicer than the others. Powertrain choice was about what your ...

It's always a big moment when a new LS engine is introduced - what's so special about the next one?

Stop your Silverado's rapid oil loss with this practical guide. Fleet data show that disabling DFM cylinder cutoffs and ...

GM Authority is taking a closer look at all of the 2026 GMC Savana payload capacities, including every engine and model ...