1966 BUICK RIVIERA GRAND SPORT
1966 Buick Riviera Grand Sport
The Riviera underwent a major restyle in 1966, the start of the second generation. The headlights were moved back in the grille, and retracted above the grille when not in use. The vent windows were eliminated and the roof and rear deck gained fastback like styling. The hood became longer, reported the longest ever on a car, and the taillights were redesigned. The GS lost its two carb option (though 198 copies were dealer installed), and the 401 engine was dropped, so the 425 cid 340 bhp became the only factory engine choice. The restyle was a hit with customers and 45,348 copies were sold, a 50% increase over the year before.
Engines: 425 V8 340bhp @ 4400rpm, 465 lb-ft @ 2800rpm.
Performance: 425/340: 0-60 in 8.6 sec, 1/4 mile in 16.4 sec @ 84 mph.