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.

A pickup with a turbo V6 might not seem that impressive by today's standards, but in the early 1990s a GMC Syclone like the one in Jay Leno's Garage was king of the American road.

This example has just 10,000 miles on its odometer. Part of the GMC Syclone's claim to fame was beating a Ferrari 348 in a drag race in the September 1991 issue of Car and Driver. This 1991 GMC ...