1973 Plymouth ‘Cuda Engine Options and Specifications

In 1973 the Plymouth ‘Cuda could be ordered with two different engines.

For the 1973 ‘Cuda, the 318 2 barrel was the standard engine and the 340 4 barrel was an optional engine. There were no other engine options available.

This article will include the 1973 ‘Cuda 340 4 barrel and 318 2 barrel engine specifications. This includes the engine code, cost, displacement, horsepower, torque, compression ratio, camshaft, lifter type, valve sizes, bore, stroke, air cleaner, exhaust, fuel and carburetion.

1973 Plymouth 'Cuda with a 340 engine.
1973 Plymouth Cuda with a 340 engine

1973 Plymouth ‘Cuda Engine Options and Specifications

The 1973 ‘Cuda was available with the following engines.

  • 318 2-barrel (Standard)
  • 340 4-barrel (Optional)

The two engines were carried over from 1972 with very little change.

1973 ‘Cuda With a 318 2-barrel

The 318 2-barrel was the standard engine for the ‘Cuda in 1973. The engine is little changed from 1972 except for a slight increase in torque, 265 @ 2,000 rpm instead of 260 @ 1,600 rpm.

The camshaft and compression ratio remained the same.

The engine code was E44. Let’s take a look at the specifications.

Specifications318 2-barrel
Displacement318
Bore and Stroke3.91″ x 3.31″
Horsepower150 @ 3,600 RPM
Torque265 @ 2,000 RPM
Compression Ratio8.6:1
Cam Duration/Overlap240°/248°/26°
Cam Lift.373″/.399″
Lifter TypeHydraulic
Valve Diameter, Intake1.78″
Valve Diameter, Exhaust1.50″
CarburetionSingle Ball and Ball 2-bbl
Air CleanerSingle Snorkel
Exhaust SystemSingle
Fuel RecommendedRegular
1973 ‘Cuda 318 2 barrel Specifications.

1973 ‘Cuda With a 340 4-barrel

340 4-barrel engine.
340 4 barrel engine

The 340 4-barrel was available as the optional engine for the ‘Cuda in 1973.

The rated horsepower remained the same while the torque slightly changed from 290 @ 3,600 rpm to 295 @ 3,600 rpm.

The camshaft and compression remained the same.

The engine code was E55. Let’s take a look at the specifications.

Specifications340 4-barrel
Displacement340
Bore and Stroke4.04″ x 3.31″
Horsepower240 @ 4,800 RPM
Torque295 @ 3,600 RPM
Compression Ratio8.5:1
CamshaftHigh lift, high performance
Cam Duration/Overlap268°/276°/44°
Cam Lift.429″/.444″
Lifter TypeHydraulic
Valve Diameter, Intake1.88″
Valve Diameter, Exhaust1.60″
CarburetionSingle Carter 4-bbl
Air CleanerSingle snorkel, low restriction
Exhaust SystemDual, low restriction
Fuel RecommendedRegular
1973 ‘Cuda 340 4 barrel Specifications.

That’s the complete list of engines available for the 1973 Plymouth ‘Cuda. If you have any questions to ask me about the engine options or specifications for the 1973 ‘Cuda car model, send us an email found specifically on my contact page or comment below.

1973 'Cuda with a 340 engine.
1973 Cuda with a 340 engine

About 38 years ago I assembled my first Mopar engine, it was for a 1970 ‘Cuda. It’s at that time my hands on experience with Mopar cars and engines, including the 440, started. Although my research of the engines started years earlier.

Kevin Garce video displaying countless E-body Mopar cars.

Read More E-body ‘Cuda Articles

1970 Plymouth ‘Cuda Engine Options and Specifications

1971 Plymouth ‘Cuda Engine Options and Specifications

1972 Plymouth ‘Cuda Engine Options and Specifications

1974 Plymouth ‘Cuda Engine Options and Specifications

Article Resources

  • 1973 Plymouth Service Manual
  • Google Books: Chrysler Engines 1922-1998
  • The Definitive Barracuda & Challenger Guide 1970-1974 by Scott E. Ross

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