For 1972, there were minor style changes to the Cutlass, and the 442 reverted back to being a trim line (W-29 option) on the Cutlass instead of an individual model, as it was in 1971.
The primary changes to the 1972 Cutlass were the front grilles and the tail lights. The new 1972 Hurst/Olds used the Cutlass Supreme notchback hardtop and convertible body. A Hurst/Olds Cutlass 4-4-2 paced the Indianapolis 500, and Olds built about 630 replicas, some 25% of them convertibles.
The straight-6 engine was retired temporarily, but returned to the lineup in 1975 following the 1973-74 energy crisis for two model years before it was replaced by a Buick-built 231 cubic-inch V6 in 1977, which was basically the same V6 previously used on some 1964-65 Olds intermediates.
The low-line F-85 series was down to a single four-door sedan and discontinued during the course of the 1972 model year due to low sales. This move also ended the use of the F-85 nameplate that dated back to 1961, although it would resurface a few years later on a base-line version of the compact Omega.
Source: Wikipedia, 2012