This video features a customized 1991 GMC Syclone pickup that has traded the factory turbocharged V6 engine for a 427 LS V8 with an a huge 88mm turbocharger.

While you won't find a lot of V6 engines in the history of GMC trucks, there are a few standouts. Here are three of the most powerful GMC V6s.

Syclone A Comin’: GMC’s Jammin’ New 13-Second, AWD, Turbo-Charged V6 S-15 Pickup Originally published in the October 1990 issue of Hot Rod magazine ...

We digitally imagined a modern version of the 2025 GMC Syclone, and GMC needs to make it as soon as possible.

The Engine The Grand National engine was not used in the GMC Syclone, but a more extensive, turbocharged 4.3-liter V-6 replaced it. It generated 280 horsepower at 4,400 RPM and 350 pound-feet of ...

First up, earlier this spring was the GMC Syclone. Originally conceived as a high-performance version of the GMC Sonoma pickup truck, it had a very short-lived production span and thus has ...

Enter the GMC Syclone from New Jersey-based Specialty Vehicle Engineering. Based on the Canyon Elevation with the extended cab and short bed, the sports truck is limited to 50 units for the 2022 ...

The GMC Syclone's Turbo Power Under the hood is a turbocharged 4.3-liter V-6 engine making 280 horsepower (at 4,400 rpm) and 350 lb-ft of torque (3,600 rpm).

The engine head covers are branded with the “Syclone” badge, even in the Typhoon, a subtle detail that hints at GMC’s haste to release the turbo SUV on the heels of the turbo pickup’s ...

While you won’t find a lot of V6 engines in the history of GMC trucks, there are a few standouts. Here are three of the most powerful GMC V6s.