440 Swap: 1970 Plymouth Road Runner

Disclosure: This site may receive compensation from some link clicks and purchases.

Here’s yet another 1970 Plymouth Road Runner that appears to have been rode hard and put away wet. It possesses a lot of the maladies that afflict this generation of Plymouth’s legendary budget muscle car, so let’s take a look at it and think about it in terms of salvation. Logan, Iowa, is where you’ll find it, and it’s available here on eBay for a current no-reserve bid of $7,200 with four bids tendered so far.

Despite its similarities to its 1969 “Car of the Year” predecessor, sales for 1970’s Plymouth beep-beep muscle car fell by more than half, generating about 36K units. Three body styles still endured: two-door hardtops, coupes (sedan such as our subject), and a convertible. This coupe’s orange finish (Vitamin C?) is badly faded and peeling, while the body panels are suffering from both surface rust and rot-through. The seller adds, “Needs a complete restoration. All quarter panels have rust. Floor pans need replacing.” Also mentioned is three years of recent garage storage, but clearly this car has seen a whole lot of outdoor time, too. This Road Runner is going all General Lee on us with its Vector wheels. They enhance the overall look, even on a car as downtrodden as this example.

The bucket seat-equipped interior is as banged up as the exterior, with trashed upholstery – front and back, disintegrating door panels, a split dashpad, sagging headliner, ripped-out radio, and a jumble on the floor that looks like a mishmash of carpet and underlay piled over top of the previously mentioned rotted floor pans. Blow it up and start over.

Originally, this RR was powered by a standard 335 gross HP 383 CI V8 engine, but now under its domed hood is a 440 CI V8 engine of unknown provenance. The air cleaner lid with the “Lean Burn” decal makes me think it’s a seventies smog motor version.  Regardless, this one’s a Road Nonrunner. A TorqueFlite three-speed automatic transmission backs up the “RB” engine.

As with many things, the first version (’68-’70) is often the best, and that’s my outlook regarding the Road Runner and its similar sibling, the GTX. To parse it even further, I prefer the ’68 Road Runner over its two successors, because that freshman edition seemed to be the truest to the stripped-down, no-frills character that the Road Runner was supposed to embody. This example is far from a lost cause, but it’s going to take a ton of time, effort, and $$$ to make it right again. Regardless, three bidders are chasing this no-reserve Mopar, so it will get sold, but from my perspective, I’d want to keep looking. How about you?

Auctions Ending Soon

Comments

  1. Phil D

    The color is Tor-Red, not Vitamin C. Dodge called it Hemi Orange, in keeping with Detroit’s muscle car era practice of choosing an orangish red/reddish orange color and having one division sell it as orange and another as red. GM did the same, with Chevrolet and Pontiac selling a color remarkably similar to this as Hugger Orange/Carousel Red.

    Like 3
  2. Hammer

    This car is non matching smog 440 motor. Not a n96 car and rotted out. So let’s auction it off and see how much some sucker will pay for it. It’s at 7200 now and way over what a parts car is worth. Glwts.peace!

    Like 4
  3. RWDrifter

    Seems legit.

    Like 1
  4. geoff C

    Doesn’t have much going for it.

    Like 1
    • Melton Mooney

      I agree. Base Roadrunners and Superbees never had a lot going for them anyway. The 383 is just not a standout in my opinion, the all-too-common column shift auto was reliable but never the stuff of legend, and most were sparsely optioned compared to Chargers which tended to be more nicely appointed.

      Like 1
  5. Mark

    A lot of work needed here. Another car would be nice and make one out of two!

    Like 0
  6. Steve R

    Sold on 8/5/2025 for a high bid of $8,800.

    Steve R

    Like 0

Leave A Comment

RULES: No profanity, politics, or personal attacks.

Become a member to add images to your comments.

*

Barn Finds