Description

1987 Buick Grand National – Built 3.8L TE-60 Turbo V6, Methanol Injection, 4-Speed Auto, 51k Miles

This 1987 Buick Grand National is a modified example powered by a rebuilt 3.8-liter turbocharged V6 paired with an Extreme Automatics Stage 1 four-speed automatic transmission and a limited-slip differential. The seller acquired the car in 2015 and commissioned engine upgrades that include a TE-60 turbocharger, Alky Injection methanol system, TA Performance downpipe, RJC Performance intake plenum, Turbo Tweak chip, and high-flow injectors, among other enhancements. Finished in Black (19) over Black and Sand Gray cloth, the car also features a sunroof, Delco AM/FM/cassette stereo, and 15″ replica chrome wheels.

Refinishing of the hood and decklid spoiler was completed in 2025, and the interior received a new headliner and window beltline seals in 2024. Additional equipment includes a Scanmaster, aftermarket gauges, power accessories, and air conditioning. Now showing 51k miles, this Grand National is offered by the current owner with recent service history and a clean title.

Highlights

• Rebuilt 3.8L Turbocharged V6

• Extreme Automatics Stage 1 4-speed automatic transmission

• TE-60 Turbo, Alky Injection Methanol Kit, Intercooler

• RJC Plenum, TA Downpipe, Ceramic Headers, 62mm Throttle Body

• High-flow Injectors, Turbo Tweak Chip, MAF Translator

• Limited-Slip Differential

• 15″ Replica Chrome Wheels with BFGoodrich Radial T/A Tires

• Black over Black/Sand Gray Cloth

• Sunroof, Rear Spoiler, Sport Mirrors, Tinted Windows

• Delco AM/FM Cassette Stereo with Graphic EQ

• Scanmaster, Alky Controller, Aftermarket Gauges

• New Headliner, Beltline Seals, AC Compressor (2024)

• Repainted Hood & Spoiler (2025)

• 51k Miles Shown

Exterior

The car is finished in factory-correct Black (19) and features hallmark Grand National styling, including:

• Sculpted hood

• Rear deck spoiler

• Sunroof

• Sport mirrors

• Tinted glass

• Rear window defogger

• Dual exhaust outlets

The hood and rear spoiler were repainted in 2025, and close-up images show minor blemishes consistent with use.

Wheels & Brakes

Mounted are 15″ replica chrome wheels with black accents, wrapped in BFGoodrich Radial T/A tires sized 235/60 (front) and 245/60 (rear). Braking is handled by power-assisted front discs and rear drums.

Interior

The cabin is trimmed in Black and Sand Gray cloth, with Turbo 6 embroidered front bucket seats and a rear bench. Interior features include:

• Air conditioning

• Cruise control

• Power windows and locks

• Delco AM/FM cassette stereo with graphic equalizer

• New headliner (2024)

• Replaced window beltline seals

• Dash-mounted Scanmaster and Alky controller

• Aftermarket oil pressure and boost gauges mounted ahead of the shifter

The leather-wrapped three-spoke steering wheel fronts a tilting column and houses factory gauges, including:

• 85-mph speedometer

• Digital tachometer

• Boost pressure and fuel level indicators

The five-digit odometer reads 51k miles, with mileage believed to be accurate.

Engine & Performance

The 3.8-liter turbocharged V6 was rebuilt by RPE Performance Engines and upgraded with the following components:

• TE-60 turbocharger with PTP turbo blanket

• Duttweiler intercooler neck

• Ceramic-coated headers

• Alky Injection methanol system

• MAF translator with 3″ MAF sensor

• TA Performance downpipe

• RJC Performance intake plenum and plate

• 62mm throttle body (rebuilt)

• Turbo Tweak performance chip

• High-flow fuel injectors

• Casper engine & injector harnesses

• New alternator, hoses, water pump, and AC compressor

The engine feeds power to the rear wheels via an Extreme Automatics Stage 1 4-speed automatic transmission and a 3.42:1 limited-slip differential.

Undercarriage & Condition

Photos of the undercarriage show a clean and well-preserved chassis. The seller states that the car runs strong and shifts smoothly, with no unusual noises or leaks reported. The AC blows cold, and all modifications were professionally installed.

Summary

This modified 1987 Buick Grand National offers serious performance upgrades, classic 1980s styling, and a clean 51k-mile example of one of the most iconic turbocharged American cars of its era. With its professionally rebuilt and upgraded drivetrain, recent cosmetic work, and comfortable factory features, this Grand National is ready for the street, strip, or show.

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