Everybody knows about the 1971 model because of the GTX in Fast & Furious 8. And, of course, a 1968 model is super nice and collectible. But I bet you’ve never seen anything like this 1973 Plymouth Road Runner Pro Street build.
It immediately stands out through its modern-looking paint that almost wants to scream and a massive V8 that couldn’t possibly be contained by the hood. It’s about as Pro Street as it gets, and even though the mods are bold we think they’re well done.
Mopar stands for Motor Parts, not more power. Back in 1937, they wanted to sell some antifreeze and created a little marketing term. In the late 1960s, the name became synonymous with Chrysler’s iconic muscle car models. Today, these are some of the most collectible and expensive cars in American auction history.
It’s all about certain engine displacement and rarity. And this 1973 Plymouth Road Runner ticks at least one box. Under its hood (for the most part) sits a Mopar 426 cubic-inch block, a brand new block of the best HEMI in town. However, it’s been stroked out to a 446 block.
The 7.3-liter V8 has been paired with an Enderle-style scoop on dual Holley 750s. That’s twin four-barrels for lots of power. And, of course, you can’t ignore the fact that it’s got a massive Indy blower.
Perfectly dressed Mopar
Besides spending big money on the 426, Mopar guys love to dress up their engines, this one being no exception. The hood looks like it just left the factory, with its immaculate vents grilles. That hope for the supercharger has been rolled out and is accentuated by the back graphics that follow it perfectly.
Beneath, an Indy 440-1 Max Wedge aluminum head and manifold combo disguise the engine. The Mopar Performance 426ci engine block has been paired with 81 JE forged pistons, Manley rods, an Eagle forged crank, Comp Cams flat-tappet blower cam, ATI damper and gear drive, MSD ignition (and other wiring). She gets hot when stationary, so dual fans, and a BeCool aluminum radiator keep it all running cool.
What comes next are some TTI headers followed by Flowmasters mufflers. We don’t know how much power it’s making, probably about 1000 hp, and it gets dumped through a 727 Chrysler transmission built by Pro Trans with a Hurst ratchet shifter.
For wheels, she’s running staggered Boyd Coddington 5-spokes, 18s at the front and 20s at the rear with Mickey Thompson tires. And, of course, there’s the paint. They say this is Sublime Green, looking like the modern Dodge Challenger/Charger color. However, this used to be a 1969 Dodge color as well, but maybe it didn’t look this… acidic.
With shaved bumpers and no front panel gaps, this is looking more like a 2023 car. This unique 1973 Plymouth Road Runner Pro Street build could be yours as long as you’ve got $149,900 to hand over to Vanguard Motors.