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Oct 1, 2020 · Above: A 1987 Buick Grand National would serve as the starting point for every GNX. (Photos courtesy of General Motors) The standard 1987 Grand National, pictured above, 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.
Oct 12, 2018 · "The next significant improvement was in 1986, when Ron Yuille and the Turbo Engine Group engineered an intercooler for the 3.8 Turbo SFI V-6," wrote Martyn L. Schorr in his book, Buick GNX.With a ...
Mar 25, 2021 · The story of the Buick Grand National (and its hopped-up sibling, the GNX) is a familiar one to muscle car fans: in the early '80s Buick took its Regal coupe, outfitted it with a turbocharged V6, and proceeded to stomp all over every other American car in a straight line.
4 days ago · From the March 1999 issue of GM High-Tech Performance: The 1986 and 1987 Buick Regal Grand National set the performance bar high in the 1980s, not with a V-8 but with a turbocharged intercooled V-6.
The Turbo Regals(Grand National, T-Type, Turbo T, and GNX) all have Buick's 3.8 liter(231 cubic inch) 90deg. V-6 engine. It should be noted that Buick used turbochargers on this engine from 1978 through the 1987 model years.
Engine Used. 231ci/276hp. Zero to Sixty. 4.7 sec. Quarter Mile. 13.5 sec @ 102.0 mph. Buick announced that the Regal’s rear wheel drive platform was history and that 1987 was the last year the Grand National would be offered.
