The Coronet R/T only ever came with two engines — Dodge would not let anything softer wear the badge. One was the standard 440 Magnum, rated at 375 horsepower; the other was the far rarer 426 HEMI that turned an unassuming B-body into one of the era’s most feared street cars. By 1970, with just 2,615 R/Ts built out of over 114,000 Coronets, the model was already on its way out in favor of the Charger. Here’s what made this quiet-looking Mopar such a serious machine.