Article: 10 of the most powerful engines ever built by General Motors, ranked

April 23, 2026

Story by Brian Nyambura in SlashGear

General Motors has a long history of producing powerful engines that push the boundaries of innovation and performance. In this piece, SlashGear delves into some of the company's creations, with a focus on exceptional engine output. GM's roster boasts some real raw power, with the most potent engines producing over 400 horsepower and culminating in a staggering 772 horsepower. While the iconic small-block V8 engines take center stage, some of the remarkable contenders in this arena include the twin-turbocharged V6 and the formidable Duramax turbo diesel.

Each step of this scale represents a distinct engine, demonstrating GM's commitment to innovation. This journey isn't just about numbers; it's also about the relentless pursuit of speed. These engines' legacies continue to inspire, from the LT5's use of GM's first dual injection system to the LF3's first implementation of twin turbocharging in a V6. Prepare to be surprised as we unveil the hidden gems and established legends in General Motors' engine lineup.

Read More: Click Here to read about the evolution of these powerful engines.

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