For 1985, GM dropped the 252-cu.in. V-6 and made the 307-cu.in. V-8 the standard engine across the entire Riviera lineup. The turbocharged V-6 remained an available option on the convertible, with its price reduced to $735, but a mere 49 customers checked this particular option box. For the Riviera convertible’s final year on the market, … Continue reading 1985 Buick Riviera Manufacturer Promo