The 1986 Buick Regal Grand National (WE2) Marked a new era in Modern muscle car performance. Buick made some significant changes to the 1986 Grand National's powertrain that would make it one of the most powerful V-6 produced in the 1980's.
With the addition of an "Air-to-Air Intercooler" (which cooled the charged intake air, which everyone knows a cold turbo is a happy turbo), slight turbo changes, as well as modified upper and lower intake manifolds, and a redesigned exhaust system, made this car far more efficient than its earlier sibling. Horsepower was now upped to a respectable 235 at 4,000 r.p.m., and a Rubber melting 330 ft. lbs. torque at 2,400 r.p.m.. Other notable changes included a revised front air dam (with opening in the center to allow cool air to reach the Intercooler duct).
Grand National option for 1986 included:
Black (19) exterior color
Black bumpers, rub strips and guards
Black front air dam
Rear deck lid spoiler
Chrome plated steel wheels (4)
Grand National and intercooler identification
Front bucket seats (583 trim code)
Full length operating center console
Performance tuned suspension
Additional Grand National options for 1986