1971 Oldsmobile Cutlass Supreme — Rocket 455 V8, W-30 Tribute, Bittersweet Orange Why This Car Is Special The 1971 Oldsmobile Cutlass Supreme occupies a unique place in American muscle car history. It was the last model year before tightening emissions regulations and insurance surcharges began to genuinely strangle big-block performance. By 1971, Oldsmobile had already lowered compression ratios across the board to run on regular unleaded fuel, but the Rocket 455 cubic inch V8 — the largest displacement engine Oldsmobile ever put in a passenger car — still produced 340 horsepower and a massive 460 lb-ft of torque in standard tune that year.

That torque figure is what made the 455 special. It was not a high-revving screamer. It was a low-rpm freight train, the kind of engine that pulls hard from idle and keeps pulling through the quarter mile without asking much of the driver.

The Cutlass Supreme was the upmarket version of the A-body Cutlass lineup, sitting above the base Cutlass but below the full performance 4-4-2. It offered a longer list of standard comfort and appearance features, including the distinctive woodgrain interior trim that became a signature of the model. The 1971 Cutlass Supreme was one of the best-selling cars in the United States that year, and the two-door hardtop coupe body style — with its wide C-pillar, flowing roofline, and long hood — has aged extremely well visually.

This particular 1971 Oldsmobile Cutlass Supreme is finished in Bittersweet Orange, one of the more distinctive factory color options available on the A-body platform in 1971, paired with a black vinyl top and a black interior. The car wears W-30 tribute badging and the corresponding ram-air hood scoops, graphics, and stripe package that evoke the factory W-30 performance option without claiming to be something it is not. Under the hood sits a Rocket 455 V8 backed by a Turbo Hydra-matic 400 automatic, supported by a set of performance upgrades that make this car a genuine driver rather than a show piece.

The VIN decodes to confirm this is a 1971 Oldsmobile A-body two-door hardtop built at the Lansing, Michigan assembly plant, with a 455 cubic inch engine and automatic transmission — consistent with everything presented here. Features List - Rocket 455 cubic inch V8 engine - Turbo Hydra-matic 400 3-speed automatic transmission - Edelbrock aluminum intake manifold - 4-barrel carburetor - MSD ignition system - Magnaflow dual exhaust - W-30 tribute badging and ram-air hood scoops - Black W-30 stripe graphics - Bittersweet Orange exterior paint - Black vinyl top - Chrome front and rear bumpers - Torq-Thrust style wheels - Air conditioning - Woodgrain interior trim on dashboard and door panels - Custom sport steering wheel with Oldsmobile center cap - Dashboard-mounted tachometer - Front and rear bench seats - Front and rear headrests - Black floor carpeting - Column-shifted automatic transmission - Rear drum brakes Mechanical The Rocket 455 was Oldsmobile's big-bore entry in the displacement wars of the early 1970s. Introduced in 1968, the 455 used a large 4.126-inch bore with a 3.975-inch stroke, giving it a broad, undersquare design that favored torque over high-rpm horsepower — exactly the kind of engine that suits street driving.

In standard 1971 tune, it was rated at 340 horsepower and 460 lb-ft of torque. The compression ratio had been dropped to 8.5:1 that year to accommodate regular unleaded fuel, which actually made these engines more durable long-term and easier to run today on pump gas. This car's 455 has been upgraded with an Edelbrock aluminum intake manifold, which reduces weight over the iron factory unit and improves airflow to the 4-barrel carburetor.

The MSD ignition system replaces the factory points-type ignition with a capacitive discharge unit that delivers a stronger, more consistent spark — a practical improvement that helps the engine run cleanly and start reliably. The Magnaflow dual exha