1973 Buick Century Gran Sport Concours Restoration Guide

The 1973 Buick Century Gran Sport represents a late-era attempt to maintain the Gran Sport performance tradition within the new third-generation A-body introduced for 1973. The Century nameplate returned to a performance context for the first time since the 1950s. The 455 ci engine continued with Stage 1 available, though net horsepower figures reflected the compression-reduction era. The 1973 Colonnade body was a complete departure from the 1968-1972 second-generation design,