The Barracuda received only minor styling changes for 1968 – the big news was under the hood. The 225-cube slant six continued as the entry-level powerplant, but even the base V8 was significantly upgraded, with a huge bore increase resulting in 318 cubic inches, still with a 2-Bbl carburetor.
The 1968 DeVille saw the installation of a power-oriented front seat with horizontal adjustment and the addition of illuminated door panel reflectors. There were richer appointments inside and out, including the traditional rear fender Tiffany-like scripts and plusher upholstery trims.
The Nova Super Sport was transformed from a trim option to a performance package for 1968. It could be had with a 295 hp 350ci up to a 375 hp 396ci. Along with the heavier engines came heavy-duty suspension and "rock crusher" transmission.
The AMC AMX was a two-seat GT-style sports car that was produced by American Motors Corporation for the 1968 through 1970 model years. The AMX was also classified as a muscle car, but was unique among other American cars at the time due to its short wheelbase.
The 1968 Camaro was almost visually identical to the ’67, with the exception of new front and rear side marker lights and vent-less door glass. What really made the ’68 Camaro stand out was big engines, upgraded suspension, and special equipment features.
The 1968 model year was one of significant change for the Buick Skylark. Although still using the same basic chassis, all of GM’s mid-sized cars adopted a policy of using two different length wheelbases.