As with every Hemi intended as a production car, tentitive output figures were set at 425 hp @ 5000 rpm and 490 ft lbs of torque @ 4000 rpm. But as anyone knows, this was grossly underrated, moreso with the competition-style Hemi in the Super Stock Dart. Actual output was closer to 600 hp, especially when most racers uncorked the headers when they got to the track
Mopar further accented these points by a red sticker on the door jam that read "This vehicle was not manufacturered for use on Public Streets, Roads or Highways, and does not conform to Motor Vehicle Safety Standards."

Despite the strict disclaimer concerning the '68 Hemi Dart, it was too much of a deal for true racers to pass up. With 600 hp in a car weighing in at 2150 pounds without the driver, this incredible monster tore up the quarter mile in the mid-low 10s @ 130-135 mph, with minor tuning. The sound of the majestic elephant breathing through open headers was a deafening song unlike any other--you cannot truly comprehend the sound of an uncorked Competition Hemi until you hear it.

Originally posted by superfords
yep, i've been searching for a good pic....