stigza.com

1987, Buick introduced the Grand National GNX. Produced by McLaren Performance Technologies/ASC, Buick underrated the GNX 231 cui Turbo 3.8L V6 at 276 hp with 360 lb·ft of torque. The GNX was created to be the "Grand National to end all Grand Nationals." a special Garrett T-3 turbocharger with a ceramic-impeller blowing through a more efficient and significantly larger capacity intercooler with a "CERMATEL (Ceramic/Aluminum) coated" pipe connecting the intercooler to the engine. A GNX specific EEPROM, low-restriction exhaust with dual mufflers, reprogrammed Turbo Hydramatic 200-4R transmission with a custom torque converter and transmission cooler, and unique differential cover/panhard bar included more of the performance modifications. Exterior styling changes include vents located on each front fender, 16 inch black mesh style wheels with VR-speed rated tires, and deletion of the hood and fender emblems. The interior changes of the GNX included a serial number on the dash plaque and a revised instrument cluster providing analog Stewart-Warner gauges, including an analog turbo boost gauge. Quarter mile in 13.43 sec and 103mph. The GNX  had a ladder bar that ran from the mid-section of the car to the rear axle, so as to increase traction. This is also the reason why a GNX will actually lift the rear end up when the car is about to launch heavily. (feels like the car is going to roll over) Only 547 GNX's were made. 

    stigza@yahoo.com    www.twitter.com/stigza    www.facebook.com/stigza     www.stigza.blogspot.com 
#