Limited production of high-performance Buick Regal variants from 1987.
By 1984 the Grand National evolved into a serious performer with a turbocharged V-6, aluminum wheels, and all-black exterior. With rear-wheel drive set to disappear from Buickβs lineup after 1987, chief engineer Dave Sharpe sought to close the Grand National chapter with authority.
The result was the GNX, or Grand National Experiment, a no-holds-barred offering developed in partnership with ASC McLaren. The GNX featured a specially tuned Garrett turbocharger, ceramic impeller, upgraded intercooler, revised engine management, and freer-flowing exhaust, yielding over **275 horsepower and 360 pounds-feet of torque, while a reinforced transmission, wider tires mounted to mesh wheels, and a retuned suspension gave it tenacious grip and formidable street presence. Originally slated for just 200 units, overwhelming demand saw GNX production rise to 547.
Psss: ** Originally rated at 276 hp, dyno tests have shown actual output closer to 300 hp.
https://www.hotrod.com/features/mythical-no-547-1987-buick-gnx-real-know-not-telling Fans, be on the lookout for a fixer upper sleeper looking GNX. Current Market Value:- typical going rate sits right around $180,000 to $195,000. Ultra-Low Mileage / "Time Capsules": Pristine examples with less than 2,000 miles routinely fetch between $230,000 and $255,000 at premier collector auctions. The absolute record for a near-zero-mile car peaked at $308,000.Driver-Condition (Moderate to High Mileage): If a GNX has been frequently driven and shows 40,000 to 50,000+ miles, the price softens to roughly $95,000 to $110,000.
