Dive into the rise and fall of Chevy’s Monte Carlo, from luxury icon to Nascar legend. Discover its highs, lows, and lasting ...

Often overshadowed by the more powerful 1986–87 GNX models, the 1985 Grand National holds its own as a pivotal moment in ...

Doug Yates, CEO of Roush-Yates Engines, says that an increase from 670 to 750 horsepower "wouldn't be much of a change" and that he would like to see NASCAR be open-minded about tweaking the ...

While the Buick GNX was already old at this point, its astounding engine was still the most powerful available, and Pontiac decided to use its proven turbocharged V6 powerplant for the new Trans-Am.

They decided to ramp things up with a turbocharged 3.8-liter V6 engine and all-black paint. Buick wasn’t done yet. In 1986 and 1987, they made the Grand National even better.

The 1987 model of the Buick Regal Grand Prix came with a 3.8L V6 engine with a Garrett T3 Turbocharger, ceramic impeller and GNX heat shield. The GNX here stood for Grand National Experimental.

To make it even more desirable, Buick introduced an improved version of the V6 engine in the 1986 Grand National. With the addition of an air-to-air intercooler, the turbocharged motor was boosted ...

5 Cars That Dominated NASCAR: Throughout NASCAR’s storied history, a select group of cars has risen to legendary status, each leaving an indelible mark on the sport with their unparalleled performance ...

Born from the halls of Buick’s engineering prowess, the GNX shattered preconceptions of muscle car performance. Buick GNX (Credits: Buick) While its European counterparts boasted V8 engines and ...

This revved-up version was a 3.8-liter V6 turbo intercooled engine that produced 276 hp. In May 1987, Car and Driver reportedly "recorded a 4.7-second zero-to-60-mph run and a 13.5-second quarter ...

The car's original engine has been replaced with the turbocharged V6 from a Buick Grand National, which was one of the most powerful engines of the era with a then-impressive 245 horsepower and ...