1972 Oldsmobile Cutlass Supreme

1972 was the only year in which the Cutlass Supreme notchback hardtop could be equipped with the L75 455 and M20 four speed transmission, and only 77 of these cars were produced. All 1972 L75 455/M20 cars used the larger 2.07 valves and the W30 automatic camshaft. This gave the L75 455/M20 cars 270 net horsepower, as opposed to the TH400 automatic-equipped L75 cars, which produced 250 net horsepower.

For 1970, the Cutlass Supreme nameplate was switched to Oldsmobile's equivalent of the downsized Pontiac Grand Prix on the GM A-body platform, to give the division an entry in the burgeoning market for smaller personal luxury cars. As such, the two-door hardtop had a new notchback roofline, while lower trim-line Cutlass coupes had a fastback style roof. The model remained in this role for virtually all of its production life. Unlike the Grand Prix and the also-related Chevrolet Monte Carlo, which had wholly separate bodies and names from their less expensive siblings, the Supreme shared front and rear body parts with the standard Cutlass line and was always marketed as part of it. In addition to the two-door hardtop (Holiday Coupe), the Cutlass Supreme series for 1970 also included a four-door hardtop (Holiday Sedan) and regained the convertible bodystyle, The new 1972 Hurst/Olds used the Cutlass Supreme notchback hardtop and convertible body. 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.(Wikipedia).

Car Details :

Car: '72 Oldsmobile Cutlass Supreme

Cutlass Interior

Engine: '69 Olds 455 short-block machined and assembledby Benson Machine in Santa Ana, CA; top-end assembled by J.R. Stanley.

Heads: Edelbrock Performer RPM aluminum,2.072/1.680-inch valves, 77cc chambers, 1.6:1 roller rockers

Induction: Edelbrock Torker aluminum single-plane,port-matched to the heads and fitted with an 850-cfm Quadrajet by JoeMondello

Ignition: MSD Billet-Plus distributor and 6AL box

Camshaft: Comp Cams Xtreme Energy 274 hydraulicflat-tappet with 0.520/0.523-inch lift, 230/236 degrees duration at0.050-inch lift

Source : Car Craft