Plymouth Road Runner Diesel Swap & 4×4 Conversion! – Dirt Every Day Ep. 43


On this episode of Dirt Every Day presented by 4 Wheel Parts, Fred and Dave build a post apocalyptic 4×4 muscle car – the Mad-Maxxis Off-RoadRunner. Starting with a forgotten 1973 Plymouth Road Runner, they plan to power this one of a kind car by stuffing the next generation Cummins 5.0L V8 turbo diesel crate engine under the rusty hood. Make no mistake, this is not your standard TRAR build. This Off-Road Runner will have an Allison Transmission and a beefy transfer case to send that sweet Cummins power to all four Maxxis RAZR MT tires.

Dirt Every Day appears every fourth Tuesday on the Motor Trend channel.

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Plymouth Road Runner Diesel Swap & 4×4 Conversion! – Dirt Every Day Ep. 43

29 Comments on “Plymouth Road Runner Diesel Swap & 4×4 Conversion! – Dirt Every Day Ep. 43”

  1. Best episode so far, fantastic job, I’m gonna be under my jeep after this. loved it a lot.

  2. “This is like the ugliest Roadrunner ever made!”

    No truer words have graced the likes of YouTube…..

  3. Before i watched this video I thought “oh, theyre probably juat slapping the plymouth body on some truck frame”..:thanks for proving me wrong!

  4. Stopping at about 4:30 so I can ask: How do you work 4WD with two different sizes of tires? I see this as a potential failure. Going back to the video now to see how this works out…

  5. starsky and hutch are the ones that had that car remember the cops with the red car with the white stripe on the sides

  6. One word I hear all the time. Custom….financies and lack of technology can’t keep up with my builds and designs. I have plans for worlds fastest drag and 4×4. I even have flying motorcycles…

  7. Found this video because I had the idea of making a “Last of the V8 Interceptors” style 1971/2 Roadrunner.

  8. Why not just take it apart as usual instead of cuting everything of those part could be re used

  9. how come you guys aren’t on a time frame ? where you have to complete the build in three days like those build shows like orange county bikes show or las vegas hot rot and oh ya you guys have to be more dysfunctional to get it done and dont forget to put a diesel engine on all your builds

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