Later this month, a 1970 Plymouth Superbird owned by Petty will be offered ... 440 cubic-inch Super Commando V8 that was good for 390 hp back when the car was new. The engine is coupled to an ...

1970: The Plymouth Superbird makes landfall in a most premieres ... 440-cubic-inch V8 with a four-barrel carburetor, rated at 375 hp and 480 lb-ft (gross figures). The step-up was the ...

The Plymouth Superbird was a dominant force in the early ... though – the V8 we want to power the Superbrid is the heavily modified 1025-hp unit straight out of the Challenger SRT Demon 170.