1970 Dodge Challenger R/T: History, Specs, and High-Impact Colors

Dodge's Answer to the Pony Car Wars

Dodge had watched Plymouth's Barracuda and Ford's Mustang duke it out through the 1960s without a true pony car of its own, so for 1970 Chrysler built the E-body platform specifically to fix that — sharing its basic architecture with the redesigned Barracuda but stretching the Challenger's wheelbase to 110 inches, two inches longer than its Plymouth sibling. That extra length, along with standard quad headlights and a plusher available interior, was a deliberate move upmarket, chasing the same plusher pony-car buyer the Mercury Cougar had already proven was out there. The Barracuda, by contrast, kept its two-headlight face for every year but 1971. The Challenger launched in hardtop and convertible body styles, with the R/T performance package sitting at the top of the range — Dodge moved 76,935 Challengers in the model's debut year, and the R/T accounted for roughly one in four of them.

What Made It an R/T

Order the R/T and the Challenger came standard with a 383 cu in Magnum V8, a Rallye instrument cluster with a 150-mph speedometer and 8,000-rpm tachometer, Rallye suspension with a beefed-up sway bar, and heavy-duty drum brakes to help rein in the extra power. A low-profile, non-functional twin-scoop hood was standard, while the theatrical Shaker scoop — poking through the hood and moving with the engine — was a $97 option paired with the 440 and Hemi engines. Dual exhaust and R/T badging, including the bumblebee-style tail stripe, rounded out the package. Buyers could step up to the dressier R/T SE, with its smaller rear window and vinyl roof, or go the other direction entirely with the convertible, of which Dodge built just 963 for the year — making the drop-top R/T the rarest body style regardless of engine.

Four Engines, One Big Decision

The standard 383 Magnum made 335 hp, plenty for a car that already looked the part. From there, Dodge offered the 375-hp 440 Magnum, the 390-hp 440 Six Pack with its triple two-barrel carburetors, and finally the 425-hp, 490 lb-ft 426 Hemi — the same engine terrorizing NASCAR ovals that same season. The Hemi was a rare order in a Challenger: Dodge built only 356 of them for 1970, split between 287 hardtops, 60 R/T SEs, and just nine convertibles, the rarest combination in the entire 1970 Challenger lineup.

Screaming Colors and a Hollywood Chase

For $15, Dodge would paint an R/T in one of its High Impact colors — Sublime green, Plum Crazy purple, Go Mango orange, and the spring-only Panther Pink, worn by only about 340 Challengers that year. They weren't subtle, and that was the point: a High Impact Challenger wasn't a car you drove to blend in. The model got a very different kind of visibility a year later in Vanishing Point (1971), where a white 440 Magnum R/T carries car-delivery driver Kowalski across the Southwest in one of the era's defining car-chase films — by most accounts five Alpine White Challengers were used during filming, four of them running the 440 with a 4-speed manual.

Finding One Today

A 383 or 440 Challenger R/T is a genuinely attainable classic, but Hemi cars are a different world entirely — with so few built, documentation matters more than almost anything else on the car. Ask for the fender tag and broadcast sheet before anything else, especially on a car advertised as a Hemi or wearing a High Impact color, since both are among the most commonly faked details in the Mopar hobby. Beyond paperwork, the usual E-body checkpoints apply: inspect the torsion bar crossmember and trunk floor for rust, and confirm the partial VIN stamped on the engine block and the fender tag actually match the engine sitting under that shaker hood before the color and the badge do the rest of the talking.