1970 Plymouth Superbird Facts: 15 Fascinating Details

The 1970 Plymouth Superbird stands as one of the most audacious creations in American automotive history. With its towering rear wing and pointed nose cone, this muscle car pushed the boundaries of both performance and design. Here are 15 fascinating facts about this iconic machine.

The Superbird Was Born from Aerodynamic Necessity, Not Engine Power

While most muscle cars of the era focused on cramming bigger engines under the hood, Plymouth took a different approach with the Superbird. The car’s existence stemmed from a critical problem with the 1968 Charger: severe front-end lift and excessive drag caused by its deeply recessed grille and tunneled backlight design. Engineers recognized that developing a new high-horsepower engine would be costly with uncertain results. Instead, they turned to wind tunnel testing to create a more aerodynamic vehicle. Even after the 1969 Charger 500 attempted fixes with a flush Coronet grille and fastback roof, Ford was still dominating the performance wars. The Superbird was Plymouth’s answer to finally tip the scales.

Only Three Engine Options Were Available

Plymouth kept the powertrain choices focused and potent. The flagship option was the legendary 426 Hemi V8, pumping out 425 bhp at 5,000 rpm and 490 lb-ft of torque at 4,000 rpm. This beast featured dual Carter AFB 4-barrel carburetors that fed its appetite for speed. The second choice was the 440 Super Commando Six Barrel, delivering 390 hp through three 2-barrel carburetors and matching the Hemi’s torque output at 490 foot-lbs. For those seeking the entry point into Superbird ownership, the 440 Super Commando with a single 4-barrel carburetor provided 375 hp. Each engine brought its own character to the driving experience, from the Hemi’s raw power to the Six Barrel’s progressive acceleration.

The Hemi Version Could Sprint 0-60 in Under 6 Seconds

Performance testing revealed just how devastating the Superbird could be off the line. The 426 Hemi variant achieved 0-60 mph in 5.5 seconds, a remarkable time for 1970. Car & Driver’s testing recorded an even more impressive 4.8 seconds for the base Hemi model. This acceleration put the Superbird in elite company among muscle cars of its era. The combination of massive torque, lightweight construction for its class, and aerodynamic efficiency created a vehicle that could genuinely shock unsuspecting competitors at traffic lights. These numbers proved that the Superbird’s wild appearance was backed by genuine performance capability.

Production Numbers Remain Somewhat Disputed

Pinning down exact production figures for the Superbird has proven challenging over the decades. Total production reached approximately 1,920 units, but the breakdown by engine type varies depending on the source. The most frequently cited numbers indicate 135 Hemi Superbirds and 716 440ci six-barrel editions, with the remainder powered by 440ci 4-barrel motors. Documentation from the American Muscle Car Museum notes that 716 of the 1970 440 Six Pack Superbird automatics were built as one variant alone. This ambiguity stems from incomplete factory records and the various combinations of engine, transmission, and option packages available. What remains clear is that Superbird production was limited, making survivors increasingly valuable.

The Four-Foot Rear Spoiler Was Its Most Iconic Feature

No element of the Superbird’s design commands attention like its massive rear wing. Standing approximately four feet above the trunk lid, this spoiler served both form and function. The wing generated significant downforce at high speeds, keeping the rear end planted during NASCAR competition. Its height was carefully calculated through wind tunnel testing to maximize aerodynamic efficiency. Road Runner decals adorned the wing endplates, connecting the Superbird to Plymouth’s performance heritage. While critics initially mocked the extreme styling, the spoiler has become one of the most recognizable design elements in automotive history. It transformed the Superbird from merely fast to genuinely iconic.

Petty Blue Became the Signature Superbird Color

Among the available color options, Petty Blue emerged as the defining hue for the Superbird. Named after racing legend Richard Petty, who drove Plymouths to victory throughout his career, this distinctive bright blue became synonymous with the model. The color choice connected the street version directly to its NASCAR heritage. While other colors like Lime Light were available and created striking combinations with black interiors, Petty Blue Superbirds captured the public imagination. Today, this color commands premium prices at auctions and remains the most sought-after finish for collectors and enthusiasts.

The Car Required Mandatory Roof Surgery

Creating the Superbird’s aerodynamic profile demanded significant structural modifications. The factory performed surgical alterations to the roof structure, smoothing the transition from windshield to rear window. These modifications left visible scars that needed concealment. Plymouth mandated a special-order vinyl roof on every Superbird to cover these surgical marks. This wasn’t an optional styling element but a necessary component to complete the car’s appearance. The vinyl roof came in various colors to complement the body paint. These modifications represented a significant investment in each vehicle and demonstrated Chrysler’s commitment to aerodynamic perfection.

Pop-Up Headlights Added to the Aggressive Design

The Superbird’s pointed nose cone created an aerodynamic challenge: where to place the headlights. Engineers solved this with retractable pop-up headlights that remained flush with the nose when deactivated. When raised, these headlights provided adequate illumination while minimizing disruption to airflow. This design element added mechanical complexity but proved essential to achieving the car’s low-drag coefficient. The pop-up mechanism became another distinctive feature that separated the Superbird from conventional muscle cars. Maintenance of these systems has become a concern for modern owners, but their functional elegance remains impressive decades later.

Two Transmission Options Were Offered

Buyers could select between manual and automatic transmissions to suit their driving preferences. The manual option was the A833 4-speed, featuring an optional Hurst Pistol Grip shifter that became legendary among enthusiasts. This transmission offered gear ratios of 2.65:1, 1.93:1, 1.39:1, and 1.00:1, paired with a 3.54:1 axle ratio. The alternative was a 3-speed TorqueFlite automatic transmission, which provided effortless power delivery and proved more consistent in drag racing applications. The manual transmission appealed to purists who wanted maximum driver engagement, while the automatic attracted those seeking convenience without sacrificing performance. Both options could handle the massive torque produced by the Hemi and 440 engines.

The Base Price Was a Bargain at $4,298

Despite its exotic appearance and specialized engineering, the Superbird’s entry price remained remarkably accessible. At $4,298 for the base model, Plymouth positioned the car within reach of serious performance enthusiasts. This pricing strategy reflected the car’s primary purpose: homologation for NASCAR racing. Plymouth needed to sell a specific number of units to qualify the Superbird for competition, so keeping prices reasonable helped move inventory. Adjusted for inflation, this represents exceptional value for a vehicle with such extreme performance capabilities and unique design. Many dealers initially struggled to sell Superbirds due to their radical styling, leading to discounting that makes the original pricing even more remarkable in retrospect.

Hood-Mounted Tie-Down Pins Were a Functional Design Element

The Superbird’s hood featured prominently mounted tie-down pins that served practical purposes beyond aesthetics. These pins secured the hood during high-speed operation, preventing unwanted opening at racing speeds. The design borrowed directly from competition vehicles, where such equipment was essential. The pins also facilitated quick hood removal for mechanical access during races. Their presence on street versions reinforced the Superbird’s racing pedigree and gave owners a tangible connection to NASCAR competition. Modern collectors appreciate these details as authentic period-correct features that distinguish genuine Superbirds from replicas.

Quarter-Mile Times Reached 13.5 Seconds at 105 mph

Drag strip testing revealed the Superbird’s straight-line capabilities. The Hemi version completed the quarter-mile in 13.50 seconds, crossing the finish line at 105 mph. These numbers placed the Superbird among the quickest production cars of 1970. The combination of powerful engines, relatively light curb weight, and aerodynamic efficiency produced consistent performance. Period testing by automotive magazines confirmed these figures across multiple examples. The 440 Six Barrel variants also posted impressive times, though slightly slower than the Hemi. These performance metrics validated Plymouth’s engineering approach and proved that the dramatic styling wasn’t merely for show.

Over 1,000 Superbirds Are Believed to Survive Today

Despite the limited production run and the harsh treatment many muscle cars endured during the 1970s and 1980s, the Superbird survival rate has been relatively strong. More than 1,000 examples are believed to exist today, representing over half of total production. This survival rate reflects the car’s special status, even during periods when muscle cars were undervalued. Many Superbirds were preserved by enthusiasts who recognized their historical significance. Others were rescued from junkyards and barns as values began climbing in the 1990s. The high survival rate means that Superbirds remain visible at car shows and auctions, keeping the model’s legacy alive for new generations.

The Engine Options Were Color-Coded in Factory Documentation

Plymouth used a simple coding system to track the various powertrain configurations. In factory documentation and broadcast sheets, U designated the 440 4-barrel engine, V indicated the 440 6-barrel variant, and R marked the legendary 426 Hemi 8-barrel setup. This coding system helped assembly line workers, dealers, and service departments quickly identify each vehicle’s specifications. Today, these codes assist collectors and restorers in verifying authenticity and original configurations. Matching numbers Superbirds with proper documentation command premium prices, making accurate identification crucial in the collector market.

The Superbird Represented the Peak of the Winged Muscle Car Wars

The Superbird arrived at the climax of an aerodynamic arms race between manufacturers competing in NASCAR. Ford had introduced the Torino Talladega, Dodge responded with the Charger Daytona, and Plymouth countered with the Superbird. These winged warriors pushed styling and engineering to extremes that would never be repeated in production vehicles. The Superbird’s dramatic appearance and genuine performance capability made it the ultimate expression of this brief but intense competition. Changes in NASCAR rules for 1971 effectively ended the aero wars, restricting engine sizes for winged cars and making them uncompetitive. The Superbird’s single-year production run captured a unique moment in automotive history, when manufacturers would spare no expense to dominate the track and capture public attention.

The 1970 Plymouth Superbird remains a testament to an era when American manufacturers pushed boundaries without hesitation. Its combination of radical styling, multiple powerful engine options, and genuine racing heritage created a vehicle that transcends typical muscle car status. Today’s collectors cherish these cars not merely as fast vehicles but as cultural artifacts that represent automotive innovation and competition at their peak. The Superbird proved that bold design and aerodynamic science could create something truly special, a lesson that continues to influence performance car development decades later.