1948 PONTIAC
Model Designations:
Pontiac Torpedo, PA Line, Series 25, 6 Cylinder
Pontiac Torpedo, PA Line, Series 27, 8 Cylinder
Pontiac Streamliner, PB Line, Series 26, 6 Cylinder
Pontiac Streamliner, PB Line, Series 28, 8 Cylinder
Pontiac Torpedo, Series 25, 6 Cylinder
2 Door Coupe, 3 Passenger, 6 Cylinder, Body Style # 48-2527B
Base Price: $1,500; Shipping Weight: 3,230 Pounds
2 Door Sport Coupe, 5 Passenger, 6 Cylinder, Body Style # 48-2527(D)
Base Price: $1,552/$1,641; Shipping Weight: 3,220/3,230 Pounds
2 Door Sedan Coupe, 5 Passenger, 6 Cylinder, Body Style # 48-2507(D)
Base Price: $1,614/$1,704; Shipping Weight: 3,275/3,275 Pounds
2 Door Convertible Coupe, 5 Passenger, 6 Cylinder, Body Style # 48-2567(D)
Base Price: $1,935/$2,025; Shipping Weight: 3,225/3,530 Pounds
2 Door Sedan, 5 Passenger, 6 Cylinder, Body Style # 48-2511
Base Price: $1,583; Shipping Weight: 3,280 Pounds
4 Door Sedan, 5 Passenger, 6 Cylinder, Body Style # 48-2519(D)
Base Price: $1,641/$1,731; Shipping Weight: 3,320/3,340 Pounds
"D" in Body Style Number indicates DeLuxe Trim
Prices & Weights shown before slash are for Standard Trim, After Slash for DeLuxe Trim.
Total Series Production: 49,262
With Hydra-Matic Transmission: 25,325
With Standard Transmission: 13,937
Individual Body Style Production Not Available
Pontiac Torpedo, Series 27, 8 Cylinder, Body Styles
2 Door Coupe, 3 Passenger, Body Style # 48-2727B
Base Price: $1,548; Shipping Weight: 3,296 Pounds
2 Door Sport Coupe, 5 Passenger, Body Style # 48-2727(D)
Base Price: $1,599/$1,689: Shipping Weight: 3,295/3,305 Pounds
2 Door Sedan Coupe, 5 Passenger, Body Style # 48-2707(D)
Base Price: $1,661/$1,751; Shipping Weight: 3,340/3340 Pounds
2 Door Convertible Coupe, 5 Passenger, Body Style # 48-2767(D)
Base Price: $1,982/$2,072; Shipping Weight: 3,595/3,600 Pounds
2 Door Sedan, 5 Passenger, Body Style # 48-2711
Base Price: $1,630; Shipping Weight: 3,350 Pounds
4 Door Sedan, 5 Passenger, Body Style # 48-2719(D)
Base Price: $1,689/$1,778; Shipping Weight: 3,395/3395 Pounds
"D" in Body Style Number indicates DeLuxe Trim
Prices & Weights shown before slash are for Standard Trim, After Slash for DeLuxe Trim.
Total Series Production: 35,360
With Hydra-Matic Transmission: 24,294
With Standard Transmission: 11,006
Individual Body Style Production Not Available
Pontiac Streamliner, Series 26, 6 Cylinder, Body Styles
2 Door Sedan Coupe, 5 Passenger, Streamliner Six, Body Style # 48-2607(D)
Base Price: $1,677/$1,766; Shipping Weight: 3,365/3370 Pounds
4 Door Sedan, 5 Passenger, Streamliner Six, Body Style # 48-2609(D)
Base Price: $1,727/$1,817; Shipping Weight: 3,450/3,455 Pounds
4 Door Station Wagon, 6/8 Passenger, Streamliner Six, Body Style # 48-STAWAG(D)
Base Price: $2,364/$2,442; Shipping Weight: 3,775/3,695 Pounds
"D" in Body Style Number indicates DeLuxe Trim
Prices & Weights shown before slash are for Standard Trim, After Slash for DeLuxe Trim.
Total Series Production: 37,742
With Hydra-Matic Transmission: 23,858
With Standard Transmission: 13,834
Individual Body Style Production Not Available
Pontiac Streamliner, Series 28, 8 Cylinder, Body Styles
2 Door Sedan Coupe, 5 Passenger, Streamliner Eight, Body Style # 48-2807(D)
Base Price: $1,724/$1,814; Shipping Weight: 3,425/3,455 Pounds
4 Door Sedan, 5 Passenger, Streamliner Eight, Body Style # 48-2809(D)
Base Price: $1,755/$1,864; Shipping Weight: 3,/3,530 Pounds
4 Door Station Wagon, 6/8 Passenger, Streamliner Eight, Body Style # 48-STAWAG(D)
Base Price: $2,412/$2,490; Shipping Weight: 3,820/3,765 Pounds
"D" in Body Style Number indicates DeLuxe Trim
Prices & Weights shown before slash are for Standard Trim, After Slash for DeLuxe Trim.
Total Series Production: 123,115
With Hydra-Matic Transmission: 98,469
With Standard Transmission: 24,646
Individual Body Style Production Not Available
General Specifications
Pontiac Torpedo 6, Series 25, 6 Cylinder
Wheelbase: 119
Bore & Stroke: 3-9/16" X 4"
Engine Displacement: 239.2 Cu. In.
Compresssion Ratio: 6.50 to 1; Optional: 7.50:1
Taxable Horsepower: 30.40
Horsepower: 90 @ 3,400 RPM; Optional: 93 @ 3,400 RPM
Torque: 175 Ft Lbs @ 1,400 RPM
Normal Oil Pressure: 35 PSI
Rear Axle Ratio: Not Available
Carburetor: Carter Model WA1-537S .
Tire Size: 6.00 x 16 inches; Inflation Pressure, Front 28, Rear, 28
Pontiac Streamliner 6, Series 26, 6 Cylinder
Wheelbase: 122
Bore & Stroke: 3-9/16" X 4"
Engine Displacement: 239.2 Cu. In.
Compresssion Ratio: 6.50 to 1; Optional: 7.50:1
Taxable Horsepower: 30.40
Horsepower: 90 @ 3,400 RPM; Optional: 93 @ 3,400 RPM
Torque: 175 Ft Lbs @ 1,400 RPM
Normal Oil Pressure: 35 PSI
Rear Axle Ratio: Not Available
Carburetor: Carter Model WA1-537S .
Tire Size: 6.00 x 16 inches; Inflation Pressure, Front 26, Rear, 26
Pontiac Torpedo 8, Series 27, 8 Cylinder
Wheelbase: 119
Bore & Stroke: 3-1/4" X 3-3/4"
Engine Displacement: 248.9 Cu. In.
Compresssion Ratio: 6.50 to 1
Taxable Horsepower: 33.80
Horsepower: 104 @ 3,800 RPM; Optional Head: 106 @ 3,800 RPM
Torque: 190 Ft Lbs @ 2,200 RPM
Rear Axle Ratio: Not Available
Normal Oil Pressure: 35 PSI
Carburetor: Carter WCD, Model 630S
Tire Size: 6.50 x 16 inches; Inflation Pressure, Front 28, Rear, 28
Pontiac Streamliner 8, Series 28, 8 Cylinder
Wheelbase: 122
Bore & Stroke: 3-1/4" X 3-3/4"
Engine Displacement: 248.9 Cu. In.
Compresssion Ratio: 6.50 to 1
Taxable Horsepower: 33.80
Horsepower: 104 @ 3,800 RPM; Optional Head: 106 @ 3,800 RPM
Torque: 190 Ft Lbs @ 2,200 RPM
Normal Oil Pressure: 35 PSI
Rear Axle Ratio: Not Available
Carburetor: Carter WCD, Model 630S
Tire Size: 6.50 x 16 inches; Inflation Pressure, Front 26, Rear, 26
Capacities, 6 Cylinder Models
Cooling System:
Without Heater: 18 Quarts
With Heater: 19-1/2 Quarts
Fuel Tank: 17 Gallons;
Engine Oil Refill: 5 Quarts;
Grade of Oil: Above +32F 20;
Above +10F 20W;
Above -10F 10W
Manual Transmission: 1-3/4 Pints
Grade of Oil: Summer 80EP, Winter 80EP
Hydra-Matic Transmission: 12 Quarts
Rear Axle: 3-1/4 Pints
Grade of Oil: Summer 90H, Winter 90H
Capacities, 8 Cylinder Models
Cooling System:
Without Heater: 19-1/2 Quarts
With Heater: 21 Quarts
Fuel Tank: 17 Gallons;
Engine Oil Refill: 5 Quarts;
Grade of Oil: Above +32F 20;
Above +10F 20W;
Above -10F 10W
Manual Transmission: 1-3/4 Pints
Grade of Oil: Summer 80EP, Winter 80EP
Hydra-Matic Transmission: 12 Quarts
Rear Axle: 3-1/4 Pints
Grade of Oil: Summer 90H, Winter 90H
Tune Up Specifications, 6 Cylinder Models
Spark Plug Type: AC 45, Champion J-8, J-11, or Equivalent
Spark Plug: Gap .025"
Point Gap: .020"
Firing Order: 1-5-3-6-2-4
Ignition Timing: "IGN" Mark on Flywheel
Engine Idle Speed:
Manual Transmission: 450 RPM
Automatic Transmission: 375 RPM (In Drive)
Tappet Clearance, Hot: Intake .012", Exhaust .012"
Cylinder Head Torque: 60 Ft Lbs
Compression Pressure @ Cranking Speed: 120 PSI (Minimum)
Tune Up Specifications, 8 Cylinder Models
Spark Plug Type: AC 45, Champion J-8, J-11, or Equivalent
Spark Plug: Gap .025"
Point Gap: .015"
Firing Order: 1-6-2-5-8-3-7-4
Ignition Timing: "IGN" Mark on Flywheel
Engine Idle Speed:
Manual Transmission: 450 RPM
Automatic Transmission: 375 RPM (In Drive)
Tappet Clearance, Hot: Intake .012", Exhaust .012"
Cylinder Head Torque: 60 Ft Lbs
Compression Pressure @ Cranking Speed: 120 PSI (Minimum)
Engine Bearing Data, 6 Cylinder Models
Camshaft End Play: .002"-.005"
Camshaft Bearing Clearance: .0015"-.0025"
Rod Journal Diameter: 2.1237"-2.1247"
Rod Bearing Clearance: .0005"-.0015"
Rod End Play: .007"-.012" inches
Rod Bolt Tension: 45-50 Lbs. Ft.
Main Bearing Journal Diameter:
#1: 2.4982"-2.4992"; #2: 2.5294"-2.5304";
#3: 2.5919"-2.5929"; #4: 2.6232"-2.6242";
Main Bearing Clearance: .001" -.003"
Crankshaft End Play: .003"-.008"
Main Bolt Tension: 80-90 Lbs. Ft.
Engine Bearing Data, 8 Cylinder Models
Camshaft End Play: .002"-.005"
Camshaft Bearing Clearance: .0015"-.0025"
Rod Journal Diameter: 1.9975"-1.9985"
Rod Bearing Clearance: .0005"-.0015"
Rod End Play: .007"-.012" inches
Rod Bolt Tension: 45-50 Lbs. Ft.
Main Bearing Journal Diameter:
#1: 2.3725"-2.3735"; #2: 2.4037"-2.4047";
#3: 2.435"-2.436"; #4: 2.4662"-2.4672";
#5: 2.4975:-2.4985"
Main Bearing Clearance: .001" -.003"
Crankshaft End Play: .003"-.008"
Main Bolt Tension: 80-90 Lbs. Ft.
Valve Specifications, 6 & 8 Cylinder Models
Tappet Clearance, Running Hot: Intake .012"; Exhaust .012"
Clearance for Timing: Intake: .015"; Exhaust: .015"
Valve Timing: Intake Opens 5 Degrees Before Top Dead Center
Exhaust Closes 5 degrees After Top Dead Center
Valve Seat Angle: Intake 30 degrees; Exhaust 45 degrees,
Valve Spring Pressure: 59 Lbs @ 1-29/32 inches (New Springs)
Valve Stem Clearance: Intake .001"
Exhaust .001"
Piston & Ring Data, 6 Cylinder Models
Piston Removal: From Above
Piston Clearance (Minimum):
Top Land Inch .0175"
Top of Skirt, Inch: .002"
Fitting Pistons with Spring Scale:
Shim Thickness: .0015"
Pounds Pull on Scale: 10 to 20
Width of Ring End Gap (Minimum):
Compression Ring: .006"
Oil Ring: .006"
Clearance Between Ring & Grooves:
Compression Ring: .0015"-.003"
Oil Control Ring: .001"-.0025"
Piston & Ring Data, 8 Cylinder Models
Piston Removal: From Above
Piston Clearance (Minimum):
Top Land Inch .0165"
Top of Skirt, Inch: .002"
Fitting Pistons with Spring Scale:
Shim Thickness: .0015"
Pounds Pull on Scale: 10 to 20 Width of Ring End Gap (Minimum):
Compression Ring: .008"
Oil Ring: .006"
Clearance Between Ring & Grooves:
Compression Ring: .0015"-.003"
Oil Control Ring: .001"-.0025"
Delco-Remy Distributor Specifications - 6 Cylinder Models
Distributor #647D
Rotation: Counter-Clockwise
Cam Angle: 31-37 Degrees
Breaker Point Opening: .022"
Condenser Capacity: .18-.23 Mfds.
Breaker Arm Spring Tension: 17-21 Ounces
Centrifugal Advance Data:
Advance Starts: 2 Degrees @ 400 RPM
Full Advance: 14-1/2 Degrees @ 2,000 RPM
Vacuum Advance Data:
Inches of Vacuum to Start Plunger Movement: 5" to 7"
Inches of Vacuum for Full Plunger Travel: 10" to 15"
Maximum Vacuum Advance: 7-1/2 Degrees
Delco-Remy Distributor Specifications - 8 Cylinder Models
Distributor #1110804
Rotation: Counter-Clockwise
Cam Angle: 21-30 Degrees
Breaker Point Opening: .016"
Condenser Capacity: .18 -.23 Mfds.
Breaker Arm Spring Tension: 19-23 Ounces
Centrifugal Advance Data:
Advance Starts: 2 Degrees @ 400 RPM
Full Advance: 11 Degrees @ 2,000 RPM
Vacuum Advance Data:
Inches of Vacuum to Start Plunger Movement: 7" to 9"
Inches of Vacuum for Full Plunger Travel: 17-1/2" to 19-1/2"
Maximum Vacuum Advance: 10 Degrees
Delco-Remy Generator & Regulator Specifications
Generator #1102701
Generator Output: 30 Amperes @ 2,050 RPM
Brush Spring Tension: 28 Ounces
Direction of Rotation: Clockwise
Field Current @ 6 Volts: 1.75-1.95 Amperes
Regulator #1118242
Cutout Relay:
Voltage to Close Points: 6.4
Reverse Current to Open Points: 0 to 3 Amperes
Armature Air Gap: .020"
Voltage Regulator Setting: 7.4 Volts
Current Regulator Setting: 36 Amperes
Current & Voltage Armature Air Gap: .075"
Ground Polarity: Negative
Delco-Remy Starting Motor Specifications - 6 Cylinder Models
Part #1107070
Rotation: Clockwise
Brush Spring Tension: 24-28 Ounces
No Load Test: 65 Amperes, 5.67 Volts, @ 5,000 RPM
Torque Test: 525 Amperes, 3.37 Volts, 12 Ft. Lbs. of Torque.
Delco-Remy Starting Motor Specifications - 8 Cylinder Models
Part #1107947
Rotation: Clockwise
Brush Spring Tension: 24-28 Ounces
No Load Test: 60 Amperes, 5.0 Volts, @ 6,000 RPM
Lock Test: 600 Amperes, 3.0 Volts, 15 Ft. Lbs. of Torque.
Carter Carburetor Specifications, 6 Cylinder
Carburetor Model: WA1
Part #652S
Float Level: 7/16"
Idle Screw Setting: 1 to 1-3/4 Turns
Pump Adjustment Using Gauge T109-117S: 17 (Medium Stroke)
Metering Rod Gauge: T-109-102
Anti-Percolator Adjustment: .030"
Fast Idle Setting: 5/8"
Unloader Setting: 5/16"
Choke Lockout Adjustment: 1/32"
Automatic Choke Setting: 3 Rich
Carter Carburetor Specifications, 8 Cylinder
Carburetor Model: WCD
Part #630S
Float Level: 3/16"
Idle Screw Setting: 3/4 to 1-3/4 Turns
Pump Adjustment Using Gauge T109-117S: 30 (Shortest Stroke)
Metering Rod Gauge: T-109-163
Fast Idle Setting: .026"
Unloader Setting: 1/8"
Automatic Choke Setting: Index
Carburetor Model: WCD
Part #630SA-SB
Float Level: 3/16"
Idle Screw Setting: 3/4 to 1-3/4 Turns
Pump Adjustment Using Gauge T109-117S: 30 (Shortest Stroke)
Metering Rod Gauge: T-109-163
Fast Idle Setting: .026"
Unloader Setting: 1/8"
Automatic Choke Setting: Index
Carburetor Model: WCD
Part #653S
Float Level: 3/16"
Idle Screw Setting: 3/4 to 1-3/4 Turns
Pump Adjustment Using Gauge T109-117S: 30 (Shortest Stroke)
Metering Rod Gauge: T-109-163
Fast Idle Setting: .026"
Unloader Setting: 1/8"
Automatic Choke Setting: Index
Fuel Pump Data:
Pump Model: AH
Maximum Pressure: 3-3/4 PSI
Pump Model: AJ
Maximum Pressure: 4 PSI
Dash Gauge Manufacturer:
Gasoline: AC
Temperature: AC
Oil Pressure: AC
Ammeter: AC
Brake Specifications, 6 & 8 Cylinder Models
Lining Dimensions/Wheel in Inches: 21-5/16"
Width: Front Wheel: 2"; Rear Wheel: 1-3/4"
Thickness: 3/16"
Brake Shoe Clearance: .010"
Wheel Cylinder Bore:
Front: 1-1/16"
Rear: 1-5/16"
Master Cylinder Bore: 1"
Pedal Free Play: Brake Pedal Pad should be even with Clutch Pedal Pad
Wheel Alignment Specifications, 6 & 8 Cylinder DeLuxe Models
Caster: - 3/4 Degrees
Camber: Zero Degrees
Toe In; 0 to 1/16"
Toe-Out on Turns:
Outer Wheel: 20 Degrees
Inner Wheel: 22-1/2 to 23-1/2 Degrees
Kingpin Angle: 4-3/8 to 4-7/8 Degrees
Rear Axle , 6 & 8 Cylinder Models
Ring Gear & Pinion Backlash: .003"-.012"
Drive Pinion Adjustment: Shims
Drive Pinion Bearing Adjustment: None
Axle Shaft End Play: .000"-.008"
Beginning Engine Numbers:
6 Cylinder Model 48-25: P6PA-1001
6 Cylinder Model 48-26: P6PB-1001
8 Cylinder Model 48-27: P8PA-1001
8 Cylinder Model 48-28: P8PB-1001
Beginning Serial Numbers:
Series 48-25: P6PA-1001
Series 48-26: P6PA-1001
Series 48-27: P8PA-1001
Series 48-28: P8PB-1001
Popular Options
Master Radio-5 Tube; Air Mate Radio-7 Tube, Air King Radio-8 Tube, Mast Antenna, Weather Chief Heater, Defroster, Venti-Heat Underseat Heater & Defroster, Windshield Washer, Rear Windshield Wiper, Fog Lights, Spot Light, White Sidewall Discs, Kool Kushion, Trunk Light, Vanity Visor Mirror, Electric Vanity Visor Mirror, E-Z-I Non-Glare Rear View Mirror, Parking Brake Lamp, Electric Clock, Umbrella Holder, Wheel Trim Rings, Exhaust Deflector, Seat Covers, High Compression Cylinder Head (7.5:1), No-Rol Device, Hydra-Matic Transmission.
1948 Pontiac Historical Data
Total 1948 Pontiac Production was 245,479.
.
1948 Pontiac Colors & Codes
Code Color PPG#
4800 Black 9200
4801 Mariner Blue Poly 10312
4802 Parma Wine Poly 50125
4804 Belgian Gray Poly 30512
4805 Frances Ivory 80349
4806 Rio Red 50124
4807 Genesse Green Poly 40567
4808 Oyser Gray 30511
Two Tones
4814 Oyster Gray Upper & Belgian Gray Poly Lower
Promotional Model Cars Available:
Metal: 4 Door Sedan
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