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The 1968 Plymouth Barracuda B029 Prototype represents a fascinating and significant piece of muscle car history. This is not just a regular Barracuda; it’s a development vehicle, car number 139 affectionately known as “The Mule,” specifically engineered by Chrysler’s Special Vehicle Department to pave the way for the legendary 1968 Super Stock package. Originally starting life as a small-block Formula S Barracuda, this car underwent a radical transformation to become a purpose-built drag racing machine, testing and validating the components that would define one of the most fearsome contenders on the quarter-mile. Offered on a Bill of Sale, this prototype offers a unique glimpse into the intense engineering and development process behind a true drag racing icon.
From Road Test to Race Track: The journey of this 1968 Plymouth Barracuda B029 Prototype began within Chrysler’s corporate Road Test Garage. Recognizing the potential for a dominant force in Super Stock drag racing, the Special Vehicle Department procured this Formula S Barracuda with the explicit intention of re-engineering it for competition. Shipping order number 744242 documents its transfer and its destiny. This “Mule” served as a crucial testbed, where engineers experimented with and refined the specific components and modifications that would ultimately comprise the production B029 Super Stock package. Its transformation highlights the dedication to performance that defined the muscle car era.
The Iconic 426 Hemi Powerplant: At the heart of this B029 Prototype lies the legendary 426 cubic inch Hemi V8 engine. This powerhouse was meticulously prepared for drag racing, featuring a high 12.5:1 compression ratio to maximize power output. A cross-ram intake manifold topped with dual Holley 4-barrel carburetors ensured a massive influx of air and fuel, while Hooker headers facilitated rapid exhaust expulsion. This combination was designed for one purpose: raw, unadulterated acceleration. While a specific horsepower figure isn’t provided for this prototype configuration, the production B029 Hemis were factory underrated at 425 horsepower, suggesting the prototype likely produced similar, if not greater, levels of power.
Race-Ready Drivetrain and Chassis: To handle the immense power of the Hemi, this prototype was equipped with a TorqueFlite 727 automatic transmission, a robust unit favored by drag racers for its durability and consistent shifts. A Sure Grip rear end ensured that the power was effectively transferred to the ground. The chassis also underwent significant modifications tailored for drag racing. These included a special steering arm, Super Stock leaf springs for optimized weight transfer and traction, and 6-cylinder front torsion bars to reduce weight and aid in launch. The implementation of front disc brakes with a special adapter and flexible brake lines to offset the master cylinder, providing clearance for the massive valve covers of the Hemi, further demonstrates the extensive re-engineering involved.
Lightweight and Functional Modifications: To minimize weight and maximize performance on the drag strip, this B029 Prototype features lightweight fiberglass front body panels, including a distinctive scooped lift-off hood providing easy access to the powerful engine. The interior was stripped down for functionality, featuring manual windows with pull-up straps and factory deluxe interior with custom racing bucket seats designed for secure driver positioning during hard launches. The battery was relocated to the trunk for improved weight distribution. A woodgrain instrument panel and an auxiliary gauge panel with a tachometer provided the driver with essential performance information, while a dual gate shifter allowed for precise gear selection. The car rolls on Mag front wheels for reduced rotational mass and chrome rear wheels, often paired with Goodyear Eagle tires for optimal traction.
Summary:
- B029 prototype used to develop the 1968 Super Stock package.
- Originally a Formula S Barracuda re-engineered for racing.
- Powered by a 426 CI Hemi V8 engine with dual Holley carbs.
- TorqueFlite 727 automatic transmission and Sure Grip rear end.
- Special steering arm, Super Stock springs, and 6-cylinder torsion bars.
- Fiberglass front body panels and lift-off hood.
- Race-oriented interior with bucket seats and relocated battery.
- Offered on a Bill of Sale.
Disclaimer: This vehicle is a prototype and may not conform to standard production vehicle specifications. It is sold on a Bill of Sale and may have limitations regarding registration and road use. Potential buyers are advised to conduct thorough research and due diligence.
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