1987 Buick GN for Sale

[GN-231]

I am the 3rd owner of this Grand National since my purchase back in 1998. The car spent most of its life in Texas until I moved to Oregon in 2002. I have spent countless hours, (and dollars) working on this car to restore it to a reliable, performance muscle car.
The Grand National has been a great car second car and I hate to see it go, but I don’t have much time for it anymore and would like to pay off my new mustang. The exterior paint is original, so the paint and body could use a freshening up for a show quality finish, but personally I think it is fine for a daily driver; garage kept since about 2001. The rear bump filler has a crack on the passenger side. The interior is a good shape other than the driver side seat is beginning to rip along the sticking in the lower back area. Also, the back seat bench has one spring that needs repair.
Mechanically, the engine runs very strong and the transmission shifts hard.
The car had a lot of highway miles when I bought it since the previous owner used to drive the car from Texas to Carolina in the summers. It had 130k when I purchased the car. Currently, it has about 161k on the chassis, however, nearly all the mechanical systems on the car have been replaced. I have rebuild the engine, most the accessory systems, replaced the brakes, rebuilt the steering & front ends with all new bushings, replace all suspension components, etc. so I would equate this car similar to a lower mileage GN reliability and quality. My next project was to replace the A/C compressor that has a leak, but with the cool climate here in Oregon it has been a low priority.
Clean Title Car.
3.8Liter V-6 Turbocharged and Innercooled. 2-door hard top. All power except for the seats.
Price = $9,500.00
More pictures available if interested.

modifications to the GN as listed below:
Precision TA-49 Turbocharger
Duttweiler enlarged neck on stock inner cooler
36lb Blue Top Injectors/Adjustable Fuel Pressure Regulator
New in tank Walbro fuel pump (May 08)
Hotwired fuel pump relay kit
Hemco upper Plenum
65mm ported throttle body
Kenne Bell front valences & Ram Air intake with conical filter
Kenne Bell Hood Mounted Fuel Pressure Gauge
Audible Detonation Sensor wired into ECU harness
Champion Ported and Polished iron heads
Port matched stock intake manifold
Boost activated SMC alcohol injection
ScanMaster engine monitor readout
TurboTweak adjustable performance ECU chip
Rear Air Bags installed
B-Quiet Ultimate Sound deadener under carpet on floorboard
Hooker Areo Chamber Catback Exhaust
Hi-flow 3” Catalytic Converter
3” Poston Downpipe
Ported stock turbo elbow
ATR stainless Driver side header (OEM always cracks on TRs)
Replaced Camsensor & Cranksensor in last 20k miles
Cragar 15X7 fronts/15X8 rears
BFG T/A Radials 205/60 fronts & 275/50 rears. Rear tires are great, fronts are close to end of life.
Pioneer DEH-P7500MP CD receiver & 6X9 rear speakers.
Iginition coiler replaced in last 20k miles
Heated O2 sensor
Installed all factory missing body bushings (common on regals)
Kirban Window rattle elimination kit installed
Kirban Headlight voltage booster kit installed
Replace GM window stripping
Replaced Hood and Trunk Weatherstripping.
VDO mechanical boost gauge & A pillar Pod
Mechanical Oil Pressure gauge
Stock Radiator Re-cored by Arizona Buick in last 20k miles
Rebuilt Alternator in the last 20k miles
Blue Silicone Cooling hoses

Hotchkis Front & Rear Sway bars
New Front A-arm bushings and ball joints
New Power Steering box
New Front & Rear Moog OEM replacement springs

Engine Rebuild @ 154,153 miles
Followed Jack Merkels rebuild clearance specs
Engine Rebuild by Gray’s Automotive in Tigard, OR
Heads rebuild with new valves/guides/springs, and retainers
0.020” over JE pistions
0.010” Stock Crank turn
0.0016”-0.0018” Main & Rod Bearing Clearances
0.010”-0.012” Side Rod Clearances
0.0035” Crank Thrust
0.004” Piston Clearance
0.018” Top Ring Gap
0.016” Second Ring Gap
Rollmaster Double Roller Timing Chain
Only ARP fasteners used on Bottom End and Heads
Upgraded HD Steel Rocker Shafts
TA performance HD groove Cam Bearings
Pro-Gram Billet Steel Main Caps
CompCams 206/206 Ductile Roller Camshaft & Hydraulic Roller Lifters
New heavy duty water Pump
Precision Turbo Oil Filer relocation kit
Brand new heater Core Installed
New mass backed OEM fit black carpet
Just rebuilt rear brakes (New shoes, springs, Wheel Cylinders) (May 08)
TurboLink Cable and CD for engine signal Logging.

[GN-231]

A few more pics