Dodge Coronet 1966 500 426 HEMI

This 1966 Dodge Coronet claims to be one of just seventeen 426 Hemi cars ever built — a number worth digging into before you take it at face value. Mopar’s own Hemi Coronet production records are murkier than you’d expect. Here’s what the real numbers say, and why it barely matters once you hear it run.

1 of only 17 ever built by Mother Mopar herself. 1966 Dodge Coronet 500 426 HEMI street cars in red with white interior. 1966 would be the first year of the fabled 426 Street Hemi option. The R/T package wasn’t available until 1967. Underrated at 425HP and legendary, this Elephant motor equipped California car has had ZERO rust ever. It doesn’t get any better than this USA bred American Muscle Car. What else is there to say? What a collector car this is!

Mopar guys love to argue about numbers, and few arguments get more heated than exactly how rare a real Street Hemi Coronet actually is. This one wears its rarity claim right in the description — one of only seventeen ever built — and whether that number holds up under a magnifying glass or not, there’s no arguing that a 426 Hemi under a mid-size Dodge hood in 1966 was about as serious as Detroit performance ever got. Before you take any rarity claim at face value on a fifty-plus-year-old muscle car, though, it’s worth understanding just how murky Mopar’s own production records really are — and why that murkiness is half the fun of chasing one down.

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How Rare Is ‘Rare,’ Really?

Depending on which slice of the build sheet you’re looking at, the reported numbers for 1966 Coronet Hemis swing wildly. Broader counts put total 1966 Coronet Hemi production somewhere around 740 cars across all trims, with roughly 340 wearing Coronet 500 badges specifically — split between about 204 four-speed manuals and 135 TorqueFlite automatics. A claim of just seventeen units almost certainly points to a much narrower slice of that number: a specific body style, color, or options combination rather than the whole Coronet 500 Hemi run. That’s exactly why broadcast sheets and fender tags matter so much in this hobby — the difference between ‘rare’ and ‘genuinely one of seventeen’ usually comes down to documentation, not just badges.

What Made It ‘Mother Mopar’s’ Best Trick

Regardless of the exact production count, dropping the 426 Street Hemi into a Coronet was never a casual option — this was Chrysler’s race-bred elephant motor, factory-rated at 425 horsepower and grossly underrated even by the standards of the day, shoehorned into a mid-size family car body that most people would’ve assumed was there to haul groceries. That contrast is the entire appeal: a Hemi Coronet doesn’t look like a race car until it leaves a stoplight, and that’s precisely the kind of factory sleeper that built Mopar’s reputation as the manufacturer willing to build something genuinely unhinged and sell it to anyone with the cash.

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