General Motors built the last of its full-size, body-on-frame, rear-drive passenger cars at its Arlington, Texas, plant in 1996, some 27 years ago, but interest in these long-discontinued vehicles endures. Used by families, retirees, law enforcement agencies, and taxi fleets, the final version of General Motors’ B-body ran its course from 1991 to 1996, with over 200,000 produced under the Buick Roadmaster banner. (Chevy had the Caprice and Impala SS; Oldsmobile the Vista Cruiser wagon; and Cadillac had the Fleetwood D-body, a lengthened B-body with a 6-inch-longer wheelbase.) Most of the GM B-bodies had no high-performance inclination until Chevy got the great idea of dropping the C4 Corvette’s LT1 V8 into the Caprice to create the 9C1 police package for 1994.
That move caught the eye of Chevy performance head…