1948 PLYMOUTH
Model Designations:
Plymouth DeLuxe, Model P15
Plymouth Special DeLuxe, Model P15
Plymouth DeLuxe, Series P-15 Body Styles
2 Door Business Coupe, 3 Passenger
Base Price: $1,346; Shipping Weight: 2,955 Pounds
2 Door Club Coupe, 6 Passenger
Base Price: $1,409; Shipping Weight: 3,005 Pounds
2 Door Sedan, 6 Passenger
Base Price: $1,383; Shipping Weight: 2,995 Pounds
4 Door Sedan, 6 Passenger
Base Price: $ 1,441; Shipping Weight: 3,030 Pounds
Plymouth Special DeLuxe, Series P-15
2 Door Business Coupe, 3 Passenger
Base Price: $1,440; Shipping Weight: 2,950 Pounds;
2 Door Club Coupe, 6 Passenger
Base Price: $1,503; Shipping Weight: 3,020 Pounds;
2 Door Convertible Coupe, 5 Passenger
Base Price: $1,857; Shipping Weight: 3,225;
2 Door Sedan, 6 Passenger
Base Price: $1,471; Shipping Weight: 3,030 Pounds;
4 Door Sedan, 6 Passenger
Base Price: $1,529; Shipping Weight: 3,045 Pouunds;
4 Door Station Wagon, 8 Passenger
Base Price: $2,068; Shipping Weight: 3,320 Pounds;
1948 PLYMOUTH
General Specifications
Plymouth DeLuxe 6 & Special DeLuxe 6, Series P-15
Wheelbase: 117 Inches
Engine Type: L-Head, In-Line 6 Cylinder
Bore & Stroke: 3-1/4" X 4-3/8"
Engine Displacement: 217.8 Cu. In.
Compresssion Ratio: 6.60 to 1
Taxable Horsepower: 25.35
Horsepower: 95 @ 3,600 RPM
Torque: 172 Ft Lbs @ 1,200 RPM
Normal Oil Pressure: 40 Lb/Sq Inch
Carburetor: Carter BD, 1 Barrel, Model D6G1
Rear Axle Ratio: 3.90:1 & 4.11:1
Tire Size: 6.70 X 15
Tune Up Specifications
Spark Plug: Auto-Lite A5; Champion J-9 or J-11; or Equivalent
Spark Plug: Gap .025;
Point Gap: .020
Firing Order: 153624
Ignition Timing: TDC Mark on Vibration Damper
Engine Idle Speed: 475 RPM
Cylinder Head Torque: 70 Ft Lbs
Compression Pressure @ Cranking Speed: 120 (Minimum)
Carter Type BB Carburetor Specifications
Part # D6G1
Float Level: 5/64"
Idle Screw Setting, 1/2-1-1/2 Turns to Open
Pump Adjustment, Using Gauge T109-117S: 22
Valve Specifications
Tappet Clearance, Running Hot: Intake .010'; Exhaust .010"
Clearance for Timing: Intake: .014"
Valve Seat Angle: 45 degrees
Valve Timing: Intake Opens 12 Degrees Before Top Dead Center
Exhaust Closes 6 degrees After Top Dead Center
Valve Spring Pressure: 40 Lbs @ 1-3/4 inches (New Springs)
Valve Stem Clearance: Intake .002"
Exhaust .004"
Piston & Ring Data
Piston Removal: From Above
Piston Ring Gap (Minimum):
Compression Ring: .012
Oil Ring: .012
Clearance in Ring Grooves:
Compression Ring: .002-.004
Oil Control Ring: .001-.0025
Wrist Pin Diameter: .8591"-08593"
Engine Bearing Data
Rod Journal Diameter: 2.0615"-2.0625"
Rod Bearing Clearance: .001"-.002"
Rod End Play: .006-.011"
Rod Bolt Tension: 45-50 Lbs. Ft.
Main Bearing Journal Diameter: 2.490"-2.500"
Main Bearing Clearance: .001 -.0015 inch
Crankshaft End Play: .003-.007 Inch
Main Bolt Tension: 80-85 Lbs. Ft.
Capacities
Cooling System: 15 Quarts
Fuel Tank: 17 Gallons;
Engine Oil Refill: 5 Quarts;
Grade of Oil: Above +32F 20;
Above +10F 20W;
Above -10F 10W
Manual Transmission: 2-3/4 Pints
Grade of Oil: Summer 90, Winter 90
Rear Axle: 3-1/4 Pints
Grade of Oil: Summer 90H, Winter 90H
Auto-Lite Distributor Data
Part # 1GS-4207-1
Rotation: Clockwise
Cam Angle: 39 Degrees
Breaker Point Opening: .020"
Condensor Capacity: .25-.28 Mfds.
Breaker Arm Spring Tension: 17-20 Ounces
Centrifugal Advance Data:
Advance Starts: 1 Degree @ 370 RPM
Full Advance: 9 Degrees @ 1,300 RPM
Vacuum Advance Data:
Advance Starts: 1 Degree @ 6 Inches of Mercury
Full Advance: 10 Degrees @ 14 Inches of Mercury
Auto-Lite Starting Motor Specifications
Part # MZ-4133
Rotation: Clockwise
Brush Spring Tension: 42 Ounces
No Load Test:
68 Amperes, 5.0 Volts, @ 4,000 RPM
Torque Test:
240 Amperes, 2.0 Volts @ 4.4 Ft Lbs of Torque
Auto-Lite Generator Specifications
Generator # GDZ-4801A or GDZ-4801B
Output: 35 Amperes @ 2,000 RPM
Brush Spring Tension: 35-53 Ounces
Field Current @ 5 or 10 Volts: 1.3-1.5
Auto-Lite Regulator Specifications
Part # VRP-4503A
Voltage to Close Points: Adjust to 6.5 Volts
Reverse Current to Open Points: 4-6 Amperes
Armature Air Gap: .031"
Voltage Regulator Setting: Adjust to 7.3 Volts
Current Regulator: Adjust to 35 Amperes
Current & Voltage Armature Air Gap: .048"
Beginning Engine Numbers:
1948 Plymouth P-15: P-15-1001 (Continued from 1947)
Beginning Serial Numbers:
1948 Plymouth DeLuxe, P-15: 15252279, Detroit, Michigan
26010840, Los Angeles, California
22063370, Evansville, Indiana
1948 Plymouth Special DeLuxe, P-15: 11854386. Detroit, Michigan
25035586, Los Angeles, California
220233168, Evansville, Indiana
Brake Specifications
Lining Dimensions/Wheel in Inches:
Length, Front Wheel: 21"; Rear Wheel: 18-1/2"
Width, 2",
Thickness, .200"
Brake Shoe Clearance: .006"
Pedal Free Play: 3/8"
Wheel Cylinder Bore:
Front: 1-3/8"
Rear: 1-3/8"
Master Cylinder Bore: 1-3/8"
Wheel Alignment Specifications
Caster: Limits: - 1 to + 1 Degrees; Desired: 0 Degrees
Camber: Limits: 0 to +3/4 Degrees; Desired: +3/8 Degrees
Toe In; 0 to 1/16 inches
Toe-Out on Turns:
Outer Wheel: 20 Degrees
Inner Wheel: 20-1/2 to 22-1/2 Degrees
Kingpin Angle: 4-3/4 to 6 Degrees
Rear Axle Data
Ring Gear & Pinion Backlash: .006-.010 inch
Drive Pinion Adjustment: Shims
Drive Pinion Bearing Adjustment: Shims
Axle Shaft End Play: .003-.008 inch
Fuel Pump Data
Pump Type: BQ
Maximum Pressure: 4-1/2 PSI
Dash Gauge Manufacturers
Gasoline: Auto-Lite
Temperature: Auto-Lite
Oil Pressure: Auto-Lite
Ammeter: Auto-Lite
Popular Options
Heavy Duty Air Cleaner, Radio & Antenna, Heater & Defroster, Wheel Discs, Turn Signals, White Sidewall Discs, Wheel Trim Rings, Fog Lights, Spotlight, Light-up Hood Ornament, Seat Covers, Clock in DeLuxe Model, DeLuxe Steering Wheel, Glove Compartment Light, Dual Windshield Wipers on DeLuxe Model, External Sun Visor, Traffic Light Viewer, Bumper Guards, Grille Guard, Wing Guards, License Plate Frames.
Paint Colors & Codes PPG CODE #
1 Black 9000
2 Marine Blue 10017
3 Chevron Blue 10319
4 Airwing Gray 30003
5 Cruiser Maroon 50003
6 Balfour Green 40004
7 Kenwood Green 40162
8 Battalion Biege 20005
9 Plymouth Gunmetal 30004
10 Sumach Red 70004
20 Charlotte Ivory 80001
1948 Plymouth Historical Data
Total 1948 Plymouth Production was 378,048.
Model Year Introduction was on January 1, 1948.
1948 Plymouth Promotional Model
Plymouth Sedan made of Pot Metal.
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