"How much horsepower did the 1973 Road Runner have?"

Question

Accepted Answer

The 1973 Plymouth Road Runner came with several engine options, each with different horsepower ratings:

• Standard 318 2-barrel: 170 hp
• Optional 340 4-barrel: 240 hp  
• Optional 400 4-barrel: 260 hp
• Top-option 440 High Performance 4-barrel (GTX package): 280 hp

The 440 engine you're asking about produced 280 horsepower at 4,800 RPM. This was the highest output available for the Road Runner that year, though it came as part of the GTX package.

Interestingly, the specific 1973 Road Runner you're looking at has been modified and isn't numbers-matching, so while it started life as a 440 car, the current engine may have been rebuilt or modified from the original factory specifications.

Would you like to know more about the torque ratings or see some comparable Road Runners currently for sale?

Lot 186177: 1973 Plymouth Road Runner

Classic cars

Cars for sale

Resources

Lot 186177: 1973 Plymouth Road Runner

Become a CLASSIC Insider