Ultimate Resto Mod – 1987 Buick Grand National

March 17th, 2021

Regarded by enthusiasts as one of the premier performance vehicles of the late 1980s, the Buick Grand National featured a 3.8-liter turbocharged (intercooled) V6 engine, a blacked out paint scheme and a menacing stance. Fortunately for us, that just wasn’t enough for the owner (Frank) of this particular G-Body. Let’s have a look under the hood and see what Frank has going on.

This is a beautiful example of a 1987 Buick Grand National. It has been passed down to Frank from his uncle. Frank plans to give it to his son – one day. For the Grand National, 1987 represents one of only two-years when the turbocharged V6 was intercooled. Of course, the intercooler drops the temperature of intake air to the turbo and dramatically improves engine performance.

The wheels and tires are 18-inch factory GNX replicas wrapped in Firestone Firehawk rubber. The car has been lowered 2-inches and the suspension has been beefed up all around.

Under the hood, the turbocharger has been upgraded to a Precision 62-millimeter ball-bearing unit. More air requires more fuel, so Frank opted to go with a set of 60-pound fuel injectors and various fuel supply enhancements. The exhaust has been opened up with 3-inch pipes and performance mufflers. The modifications have effectively doubled factory engine output to 500hp and 608 lb.-ft. of torque.

Climb on board and let’s go for a test ride.

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