An Ultra-Rare 1970 Hemi Coronet RT Convertible

A factory 426 Hemi is rare. A 1970 Dodge Coronet R/T convertible is rare. Put the two together and you have one of the hardest-to-find Mopar muscle cars ever built, and this one rolled straight into the Graveyard Carz shop with a history that surprised even the crew. Watch to see why this drop-top elephant motor car stops seasoned Mopar people in their tracks.

Most cars that roll through a restoration shop have a story, but only a rare few have a story worth stopping the whole crew to hear. When this 1970 Dodge Coronet R/T convertible arrived at the Graveyard Carz shop, it did exactly that, because the paperwork and the fender tag told a tale that seasoned Mopar people almost never get to see in person. It is a factory Hemi. It is a convertible. And the combination of those two facts turns an already desirable muscle car into something closer to a unicorn. What makes the history of this particular car so hard to believe is the part that never quite made it into the ad copy.

Why a Hemi Convertible Is Almost a Myth

Dodge built the 1970 Coronet R/T as its mid-size heavyweight, and dropping in the 426 Hemi meant 425 advertised horsepower, dual four-barrel carburetors, and a reputation earned on the street and the strip. Pairing that elephant motor with a drop top was almost unheard of, because convertibles were low-volume to begin with and the Hemi option carried a steep price and a demanding personality. The number of R/T convertibles ordered with the Hemi in 1970 can be counted on very few hands, which is precisely why this car turns heads inside a shop that sees rare Mopars every week.

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Inside a Graveyard Carz-Level Restoration

Graveyard Carz built its name on obsessive, correct-to-the-bolt Mopar restorations, and a car like this is exactly the kind of challenge the shop lives for. Sourcing date-coded parts, verifying the fender tag against the build sheet, and preserving the numbers that make the car worth its value are all part of the process. With a Hemi convertible, every decision carries extra weight because there is so little margin for error and so few surviving examples to reference.

What a Documented Hemi Is Really Worth

Valuing a car like this is almost as difficult as restoring it. Genuine Hemi cars already command a premium that ordinary big-block Mopars cannot touch, and adding factory air, a convertible top, and documented originality pushes the number into rarefied territory. Collectors treat a documented Hemi convertible less like a car and more like a blue-chip asset, which is why provenance and correctness matter so much in the story this one carries.

The Sound You Only Get With the Top Down

Rarity is only half the appeal. A Hemi convertible lets you hear all 426 cubic inches with nothing but sky above the engine bay, which is an experience owners describe as unlike any hardtop. That blend of open-air theater, blue-chip collector value, and genuine factory muscle is what makes this Coronet a car people travel to see. Watch the full video and share your thoughts below.

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