1974 Chevrolet Corvette

1974 Chevrolet Corvette Convertible Numbers Matching L48 350 V8, Last Year for True Dual Exhaust


Why This Car Is Special

The 1974 Chevrolet Corvette holds a specific and well-understood place in C3 history, and collectors who know the model know exactly why this particular year matters. 1974 was the last year the Corvette left the factory with a true dual exhaust system meaning two separate exhaust paths running from the headers all the way to the rear. Starting in 1975, federally mandated catalytic converters forced GM to route the exhaust through a single converter under the car, eliminating the true dual setup entirely. If you want a C3 Corvette with that factory-correct dual exhaust configuration and no emissions equipment restricting the flow, 1974 is your last opportunity.

There is more to the 1974 model year than just the exhaust. The rear end of the car was redesigned for 1974 with a new body-colored urethane rear bumper cover that replaced the chrome bumpers used in prior years. That rear bumper design was used only for 1974 the 1973 front end had already transitioned to urethane, but the rear was still chrome. In 1975 the design changed again. So the combination of the 1973-style front and the 1974-only rear makes this specific body configuration a single-year design. That is a detail serious Corvette collectors track carefully.

Chevrolet built 37,502 Corvettes for the 1974 model year, with convertibles accounting for 5,474 of that total. Convertible production was already declining 1975 would be the last year for a Corvette ragtop until the body style returned for 1986. This particular car is a genuine survivor with 76,411 miles on the odometer, a numbers matching L48 350 V8, and a long list of correct factory and period-appropriate options.


Features List

- Numbers matching L48 350 cubic inch V8 engine
- Turbo-Hydramatic automatic transmission
- Positraction limited-slip differential
- True dual exhaust (last year for this configuration)
- MagnaFlow mufflers
- 4-barrel carburetor
- Independent rear suspension
- Power steering
- Power disc brakes, all four corners
- Air conditioning
- Tilt steering column
- AM/FM radio
- Correct Corvette Rally Wheels
- White convertible soft top
- Deluxe interior with white leather
- Integrated seatbelts (seat-mounted shoulder belts, correct for 1974)
- Front spoiler
- Luggage rack
- 1974-only rear urethane bumper
- 76,411 correct miles


Mechanical

The engine in this car is the L48, Chevrolet's base 350 cubic inch V8 for the 1974 Corvette. The VIN confirms this as a numbers matching car, meaning the engine stamped to this vehicle has not been replaced. For 1974, the L48 was rated at 195 horsepower under the net rating system that GM adopted in 1972 a change in measurement methodology, not a reflection of how the engine actually performs. The L48 breathes through a 4-barrel carburetor and exhausts through a true dual system, the last year this layout was offered from the factory on any Corvette.

Backing the engine is the Turbo-Hydramatic automatic transmission, which was a popular choice in 1974 and is well suited to a car used for regular driving. The rear axle includes a Positraction limited-slip differential, standard equipment on the Corvette and important for putting power down evenly through both rear wheels. The 1974 Corvette uses an independent rear suspension a configuration Chevrolet introduced on the Corvette in 1963 and retained throughout the C3 generation. The setup uses a three-link design with a single transverse leaf spring, half shafts, and U-jointed axles, giving the rear wheels independent travel rather than the solid axle setup used in most American cars of the era.

The exhaust on this car has been fitted with MagnaFlow mufflers, which is a known and respected aftermarket upgrade that improves flow and sound while ma