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  • Straight six-cylinder cast iron engine block
  • 3 1/8-inch-by-4 3/8-inch bore and stroke
  • In-block valves
  • A piston displacement of 201.3 cubic inches
  • 6:7:1 compression ratio
  • Maximum 82 horsepower at 3600 rpm and 145 Ft-Lbs at 1200 rpm
  • 112-inch wheelbase with a 5 1/2 by 16 inch tyre size
  • Hypoid rear axle
  • Four main bearing crankshaft
  • Four bearing camshaft, pressure lubricated, chain driven
  • Four piston rings per piston
  • Leaf springs front and rear


Plymouth built a million units in the first six years and after another two years the second million vehicles were completed. The company was the number three automotive brand in 1937. It was the only automaker to post gains every year during the Depression and the only one to post any gain in 1932.Plymouth claimed the 1937 sedan was bigger than an ordinary low priced car in every way. It was inches wider from door to door and three people could sit comfortably in the front and the rear seat was more than four feet wide.More legroom was made possible through the use of hypoid rear-axle to enable a rear low floor height without the hump that normally accommodates a propeller shaft.The car had an all steel body with a steel top formed from one piece of steel and then welded to the sides.Door handles curved inward so they wouldn’t catch clothing.The instrument panel’s knobs and controls were recessed, including the ignition key.

The windshield opened plus it had a ventilator in the cowl. The windshield had vents in the bottom of the windshield frame so that warm air from a connection with the heater was directed over the glass.

Plymouth claimed it was the first of the low priced cars to have hydraulic brakes and could return up to 24 miles to the gallon of petrol.

At the time of manufacture not all low-priced cars came with an oil filter but Plymouth installed one to keep the engine oil clean.

Sources:, Plymouth

Restoration information:
Restoration photos courtesy of
Charles Restorations

Concours/show results:
Information to come