The 1973 Plymouth Barracuda remains one of the most recognizable silhouettes from the final years of the original muscle car era. While this example began life with a modest 318ci V8, it has since been transformed into a legitimate performance machine. A comprehensive mechanical overhaul in 2024 replaced the factory drivetrain with a much more aggressive setup. This modification effectively updates the car to meet the expectations of modern enthusiasts who crave big-block power and reliable street manners.
Massive Big Block Power and Cooling Upgrades
At the center of this build is the 440ci V8 engine, which was professionally rebuilt and installed during the summer of 2024. To ensure consistent performance, the owner added an Edelbrock carburetor and a fresh alternator in late 2025. An aluminum radiator now sits in the engine bay to manage the increased thermal demands of the larger displacement. This combination provides a visceral driving experience that the original smog-era engine simply could not replicate for the driver.
Rebuilt Drivetrain and Enhanced Grip
Handling the torque of the 440 V8 is a rebuilt 727 TorqueFlite three-speed automatic transmission. This heavy-duty gearbox features a 2,800-rpm-stall torque converter to improve off-the-line acceleration and responsiveness. Power travels through a custom driveshaft to a rebuilt Sure-Grip limited-slip differential. These upgrades ensure that the Barracuda can effectively plant its power to the pavement, whether leaving a stoplight or navigating a winding canyon road.
Rallye Red Aesthetics and Classic Hardware
The exterior is finished in vibrant Rallye Red, accented by black longitudinal stripes that run the length of the body. It features a sport hood and a pop-up glass sunroof, adding a unique 1970s custom touch to the E-body lines. Bright-finished 15-inch Cragar wheels provide a period-correct look and are wrapped in BFGoodrich Radial T/A tires. While the paint shows some minor chips from road use, the overall presentation maintains a strong and authoritative curb appeal.
Cabin Comforts and Interior Maintenance
Inside the cabin, the black vinyl upholstery remains largely original in style, though the front bucket seat cushions show some visible wear. A woodgrain-trimmed center console houses the shifter and adds a touch of era-appropriate luxury to the space. For entertainment, an AM/FM/cassette radio is linked to aftermarket speakers for a more robust sound. Despite a missing steering wheel center, the dash remains functional with a 120-mph speedometer and essential auxiliary gauges.
Engine Specifications and Performance Hardware
The 440-Powered 1973 Plymouth Barracuda utilizes a legendary Chrysler RB engine known for its immense torque and durable iron block. The August 2024 rebuild included high-quality gaskets and a performance-oriented distributor to optimize ignition timing. Recent service in December 2025 saw a complete overhaul of the braking system and the installation of new torsion bars. These mechanical investments prioritize safety and handling, ensuring the chassis can manage the substantial weight of the big-block engine.
Summary of the Modified Mopar Classic
This Barracuda offers a compelling mix of factory Rallye Red looks and significantly upgraded mechanical components. It represents a turn-key opportunity for anyone seeking a classic Mopar with the legendary 440/727 powertrain combination. While the interior and paint show minor signs of a life lived on the road, the mechanical foundation is remarkably fresh. It stands as a powerful tribute to the high-displacement heritage of the Plymouth brand.
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Source: bringatrailer.com
