the company started producing the 426 Hemi V8 engine, the revamped brand of hemispherical engines that had been out of commission since 1958. Two years later, Chrysler hit the market with the 440 ...

Throughout the majority of the 1960s, Chrysler's highest-performing automobiles featured big block engines like the 383 Magnum, 440 Magnum, 440 Super Commando, and 426 Hemi, with horsepower ratings ...

In 1970, Plymouth also offered a six-barrel version of the 440 engine, which came with 390 horses on tap. Despite the impressive performance figures of the HEMI, only a few hundred customers ...

While the Charger did well in 1971, with more than 70,000 units delivered, only 3,118 customers opted for the ...