Rare 383/4-Speed: 1970 Plymouth Road Runner Convertible

Given the enormous lists of factory options offered by manufacturers, it is possible to make bold rarity claims about almost any classic. Sometimes, they are irrelevant because the combination doesn’t genuinely impact that car’s potential value. However, this 1970 Plymouth Road Runner’s claim is on a fundamental level. The fact that it is a Convertible forms part of the claim, while the engine and transmission combination seal the deal. It presents superbly and is ideal for an enthusiast wishing to stand out from the crowd.

The 1970 model year was significant for the Road Runner, marking the end of the line for the First Generation muscle car. It was also the last where buyers could order a Convertible version, which is this classic’s first rarity claim. Plymouth produced 43,404 Road Runners that year, a significant drop from the previous. However, only 824 buyers selected the Convertible. The seller confirms that this garage-kept classic is restored, including a repaint in its original Code B5 Blue Fire. Faulting its presentation is virtually impossible, although purists may feel that the depth of shine is superior to what the factory achieved. I don’t see that as a negative characteristic because it guarantees this Plymouth will turn heads. The White power top is spotless. It fits as tight as a drum and operates as it should. The car’s location and the seller’s decision to shelter it from anything Mother Nature could throw at it allowed it to remain rust-free. There is no evidence of exterior issues, and the underside shots reveal floors you could eat off. The trim and glass are spotless, as are the Rallye wheels.

The first owner color-matched this Road Runner’s interior with its exterior, with everything colored Blue or White. The vinyl upholstered surfaces are excellent, with no dirty marks, stains, or yellowing. The dash and paint are spotless, and there is no significant carpet wear. With a crack-free pad and no aftermarket additions, it looks almost as good as it would have in 1970. The first owner didn’t wield their pen on the Order Form, restricting the options to a factory radio and the awesome pistol grip shifter.

Alrighty, then (to quote Ace Ventura), it is time to delve below the surface to discover what makes this Road Runner rare. The first owner ordered it with a 383ci V8, teamed with a four-speed manual transmission. The engine produces 335hp and 425 ft/lbs of torque, which is impressive for an entry-level powerplant. It allowed this classic to cover the ¼-mile in 15 seconds, confirming its muscle car credentials. I previously stated that 824 buyers ordered a Road Runner Convertible in 1970. However, only 179 of those selected the 383/4-speed drivetrain combination. That represents a take-up rate of 0.4%, which is insignificant in the big picture. Apart from its rarity, the first piece of news potential buyers will welcome is that this Plymouth is numbers-matching. It is also in excellent health, making it a turnkey proposition for the new owner. The seller includes the original Window Sticker and Build Sheet, further cementing its potential as a long-term investment.

It is often difficult to determine the desirability of a classic, but this 1970 Plymouth Road Runner Convertible leaves no doubts. Since the seller listed it here on eBay in Roseville, California, it has attracted thirty-six bids. This action has pushed the price to $50,100, which is below the reserve. However, that action and the listing’s view history suggest it will continue intensifying as the end draws near. A car of this caliber could see the current figure double before the hammer falls. Do you think it will, or do you have a lower figure in mind?