Vehicle Description
The standard 1987 Grand National was powered by a turbocharged 3.8L
V6 rated at 245 horsepower and 355 ft-lbs of torque. 547 Grand
Nationals were sent to ASC/McLaren for extensive modifications
inside and out. These included performance upgrades to amplify the
potency of this motor even further, as well as several suspension,
interior, and exterior upgrades.The GNX was one of the world's
fastest production cars at the time. Specifically, the 3.8 V6
received the following upgrades:
• New Garrett Hybrid turbo featuring a super-lightweight ceramic
impeller
• Maximum boost set to 15 psi
• Special dynamic turbine shaft seals to reduce drag on the
shaft
• Redesigned turbine housing included contamination trap to keep
solid particles from damaging the turbo internals
• More efficient Garrett air-to-air intercooler with higher fin
count for additional cooling capacity
• Specially coated intercooler-to-engine pipe for a cooler and
denser charge of air
• Functional vents installed on the front fenders to pull heat away
from the engine compartment
• Beefed up TH200-4R transmission
• Special front-mounted auxiliary oil cooler
• Special turbocharger heat shield with exclusive "GNX" stamped
design
• Recalibrated Engine Control Module (ECM) specifically for the
GNX.
• Better flowing dual exhaust with low restriction mufflers, also
designed to clear the new suspension components
This car has only 549 real miles
interior still has all factory plastic coverings.
It is as delivered from the company McLaren that took stock Grand
Nationals
and modified them into the fabled GNX under GM authorization.
of 547 1987 GNXs built
Unrestored with no paint work other than bumper filler panels. (
ALL GNXs have this )
all panels checked with paint meter.
Performance rear suspension
Power steering
Heavy duty battery
Front disc brakes
Power windows and locks
Tungsten halogen headlamps
Eagle Gatorback tires
16 inch aluminum wheels
Fully documented with the original window sticker
Completely Numbers matching car
$179900