Oldsmobile Cutlass Supreme Holiday Sedan 1971

The 1971 Oldsmobile Cutlass Supreme Holiday Sedan, the four-door hardtop (body 4239), with the standard Rocket 350 V8 four-barrel: 8.5:1, 260 hp at 4600 rpm and 360 lb-ft at 3200 (SAE gross). Three-speed Turbo Hydra-matic 350 (2.52/1.52/1.00, without a torque converter, as Assetto Corsa has none), the standard 2.56 axle with 2.73, 3.08 and 3.23 in the setup, open differential, coil springs all round with a front stabilizer, Vari-Ratio power steering, 9.5 in drums, G78-14 tyres, 116 in wheelbase, 3541 lb shipping weight. The physics are written from Oldsmobile’s own 1971 dealer specifications book.

The interior is new, built from photos of real cars: the walnut-grain cluster with three equal pods (fuel, temperature and oil; a 120 mph speedometer; a tachometer with a clock), the A/C and radio panels, Strato bucket seats with a walnut console and floor shifter, and a four-spoke sport wheel. The factory sold the Holiday Sedan with the Custom Sport bench only; the buckets and the console came on the coupe and the convertible.

Sixteen skins: the model’s own blue and the fifteen colours Oldsmobile offered on the 1971 intermediates, named and numbered as Oldsmobile did. Each comes with the interior trim the factory recommended for that colour (black, blue, sienna, jade green or sandalwood), with the seats, door panels, instrument panel, carpet and headliner keyed to it.

This car is open to anybody who wants to improve it: its SVN repository on SourceForge holds the installable car folder. Work directly in the KN5 model and the data files.