1948 OLDSMOBILE
Model Designations:
Oldsmobile, Dynamic Sixty, Series 66, 6 Cylinder
Oldsmobile, Dynamic Sixty, Series 68, 6 Cylinder
Oldsmobile, Dynamic Seventy, Series 76, 6 Cylinder
Oldsmobile, Dynamic Seventy, Series 78, 8 Cylinder
Oldsmobile, Futuramic Ninety-Eight, Series 98, 8 Cylinder
Oldsmobile, Dynamic Sixty, Series 66 & 68, 6 & 8 Cylinder, Body Styles
2 Door Club Coupe, 5 Passenger, Body # 48-3527
Base Price: $1,609; Shipping Weight: 3,240 Pounds; Production Total: 9,326
4 Door Club Sedan, 5 Passenger, Body # 48-3507
Base Price: $1,776; Shipping Weight: 3,285; Production Total: 23,732
4 Door Sedan, 5 Passenger, Body # 48-3519
Base Price: $1,677; Shipping Weight: 3,320 Pounds; Production Total: 18,142
2 Door Convertible, 5 Passenger, Body # 48-3567-X
Base Price: $1,725; Shipping Weight: 3,550 Pounds; Production Total: 3,892
4 Door Station Wagon, 6 Passenger, Body # 48-3562
Base Price: $2,614; Shipping Weight: 3,620 Pounds: Production Total: 1,393
Total Series Production: 56,485
Prices & Weights shown are for 6 Cylinder Models.
Cars Showing a Suffix "D" with the body style number have DeLuxe Equipment.
Oldsmobile, Dynamic Seventy, Series 76 & 78, 6 & 8 Cylinder, Body Styles
2 Door Coupe, Club Sedan, 5 Passenger, Body # 48-3607
Base Price: $1,726; Shipping Weight: 3,460 Pounds: Production Total: 25,172
4 Door Sedan, 5 Passenger, Body # 48-3609
Base Price: $1,801; Shipping Weight: 3,525 Pounds; Production Total: 26,646
Total Series Production: 51,818
Prices & Weights shown are for 6 Cylinder Models.
Cars Showing a Suffix "D" with the body style number have DeLuxe Equipment.
Oldsmobile, Futuramic, Series 98 , 8 Cylinder, Body Styles
2 Door Club Sedan, 5 Passenger, Body # 48-3807
Base Price: $2,708; Shipping Weight: 3,465; Production Total: 14,240
4 Door Sedan, 5 Passenger, Body # 48-3869
Base Price: $2,151; Shipping Weight: 3,705; Production Total: 38,061
2 Door Convertible, 5 Passenger, Body # 48-3867-X
Base Price: $2,624; Shipping Weight: 4,035 Pounds; Production Total: 12,914
Total Series Production: 65,215
Cars Showing a Suffix "D" with the body style number have DeLuxe Equipment.
General Specifications
Oldsmobile, Dynamic Sixty, Series 66, 6 Cylinder
Wheelbase: 119
Engine: Inline 6 Cylinder, L-Head
Bore & Stroke: 3-1/2" X 4-1/8"
Engine Displacement: 238.1 Cu. In.
Compresssion Ratio: 6.50 to 1
Taxable Horsepower: 29.40
Horsepower: 100 @ 3,400 RPM
Torque: 190 fT. lBS @ 1,200 RPM
Normal Oil Pressure: 30 PSI
Rear Axle Ratio: Not Available
Tire Size: 6.00 x 16 inches; Inflation Pressure, Front 28, Rear 28
Oldsmobile, Dynamic Sixty, Series 68, 8 Cylinder
Wheelbase: 125 Inches
Engine Type: Inline 8 Cylinder, L-Head
Bore & Stroke: 3-1/4" X 3-7/8"
Engine Displacement: 257.1 Cu. In.
Compresssion Ratio: 6.50 to 1
Taxable Horsepower: 33.80
Horsepower: 110 @ 3,600 RPM
Torque: 210 Ft. Lts. @ 2,000 RPM
Normal Oil Pressure: 30 PSI
Rear Axle Ratio: Not Available
Tire Size: 6.50 x 15 inches; Inflation Pressure, Front 26, Rear, 26
Oldsmobile, Dynamic Seventy, Series 76, 6 Cylinder
Wheelbase: 125
Engine: Inline 6 Cylinder, L-Head
Bore & Stroke: 3-1/2" X 4-1/8"
Engine Displacement: 238.1 Cu. In.
Compresssion Ratio: 6.50 to 1
Taxable Horsepower: 29.40
Horsepower: 100 @ 3,400 RPM
Torque: 190 Ft. Lbs. @ 1,200 RPM
Normal Oil Pressure: 30 PSI
Rear Axle Ratio: : Not Available
Tire Size: 6.50 x 16 inches; Inflation Pressure, Front 26, Rear 26
Oldsmobile, Dynamic Seventy, Series 78, 8 Cylinder
Wheelbase: 125 Inches
Engine Type: Inline 8 Cylinder, L-Head
Bore & Stroke: 3-1/4" X 3-7/8"
Engine Displacement: 257.1 Cu. In.
Compresssion Ratio: 6.50 to 1
Taxable Horsepower: 33.80
Horsepower: 110 @ 3,600 RPM
Torque: 210 Ft. Lbs. @ 2,000 RPM
Rear Axle Ratio: Not Available
Tire Size: 6.50 x 16 inches; Inflation Pressure, Front 26, Rear, 26
Oldsmobile, Futuramic Ninety-Eight, Series 98, 8 Cylinder
Wheelbase: 127 Inches
Engine Type: Inline 8 Cylinder, L-Head
Bore & Stroke: 3-1/4" X 3-7/8"
Engine Displacement: 257.1 Cu. In.
Compresssion Ratio: 7.00 to 1
Taxable Horsepower: 33.80
Horsepower: 115 @ 3,600 RPM
Torque: 218 Ft. Lbs @ 2,000 RPM
Normal Oil Pressure: 30 PSI
Rear Axle Ratio: Not Available
Tire Size: 6.50 x 16 inches; Inflation Pressure, Front 26, Rear, 26
Capacities, 6 Cylinder Models
Cooling System:
Without Heater: 18-1/2 Quarts
With Heater: 19-1/2 Quarts
Fuel Tank: 19 Gallons;
Engine Oil Refill: 5 Quarts;
Manual Transmission: 2 Pints
Hydra-Matic Transmission: 11 Quarts on Refill;
Rear Axle: 3-3/4 Pints
Capacities, 8 Cylinder Models
Cooling System:
Without Heater: 20-1/2 Quarts
With Heater: 21-1/2 Quarts
Fuel Tank: 19 Gallons;
Engine Oil Refill: 6 Quarts;
Manual Transmission: 2 Pints
Hydra-Matic Transmission: 11 Quarts on Refill;
Rear Axle: 3-3/4 Pints
Tune Up Specifications, 6 Cylinder Models
Spark Plug Type: AC 45, Champion J-8, J-11, or Equivalent
Spark Plug: Gap .040"
Point Gap: .020"
Firing Order: 1-5-3-6-2-4
Ignition Timing: "TDC" Mark on Flywheel
Engine Idle Speed:
Manual Transmission: 425 RPM
Automatic Transmission: 375 RPM (In Drive)
Tappet Clearance, Hot: Intake .008", Exhaust .011"
Cylinder Head Torque: 60-70 Ft Lbs
Compression Pressure @ Cranking Speed: 115 PSI (Minimum)
Tune Up Specifications, 8 Cylinder Models
Spark Plug Type: AC 45, Champion J-8, J-11, or Equivalent
Spark Plug: Gap .030"
Point Gap: .015"
Firing Order: 1-6-2-5-8-3-7-4
Ignition Timing: Steel Ball in Flywheel
Engine Idle Speed:
Manual Transmission: 425 RPM
Automatic Transmission: 375 RPM (In Drive)
Tappet Clearance, Hot: Intake .008", Exhaust .011"
Cylinder Head Torque: 60-70 Ft Lbs
Compression Pressure @ Cranking Speed: 115 PSI (Minimum)
Valve Specifications, 6 Cylinder Models
Tappet Clearance, Running Hot: Intake .008"; Exhaust .011"
Clearance for Timing: Intake: .0125"; Exhaust: .0155"
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: 55 Lbs @ 2-1/4 inches (New Springs)
Valve Stem Clearance: Intake .002" -.004"
Exhaust .0025"-.004"
Valve Specifications, 8 Cylinder Models
Tappet Clearance, Running Hot: Intake .008"; Exhaust .011"
Clearance for Timing: Intake: .0125"; Exhaust: .0155"
Valve Timing: Intake Opens At Top Dead Center
Exhaust Closes 10 degrees After Top Dead Center
Valve Seat Angle: Intake 30 degrees; Exhaust 45 degrees,
Valve Spring Pressure: 55 Lbs @ 2-1/4 inches (New Springs)
Valve Stem Clearance: Intake .002"-.004"
Exhaust .0025"-.004"
Piston & Ring Data, 6 Cylinder Models
Piston Removal: From Above
Piston Clearance (Minimum):
Top Land Inch .023"
Top of Skirt, Inch: .0025"
Fitting Pistons with Spring Scale:
Shim Thickness: .002"
Pounds Pull on Scale: 4 to 11
Width of Ring End Gap (Minimum):
Compression Ring: .008"
Oil Ring: .007"
Clearance Between Ring & Grooves:
Compression Ring: .001"-.003"
Oil Control Ring: .001"-.0025"
Piston & Ring Data, 8 Cylinder Models
Piston Removal: From Above
Piston Clearance (Minimum):
Top Land Inch .023"
Top of Skirt, Inch: .0025"
Fitting Pistons with Spring Scale:
Shim Thickness: .002"
Pounds Pull on Scale: 4 to 11
Width of Ring End Gap (Minimum):
Compression Ring: .009"
Oil Ring: .009"
Clearance Between Ring & Grooves:
Compression Ring: .001"-.0025"
Oil Control Ring: .001"-.0025"
Engine Bearing Data, 6 Cylinder Models
Camshaft End Play: Forward thrust is taken by a semi-circular flange in the front engine plate with the cylinder block taking the backward thrust.
Camshaft Bearing Clearance: .0015"-.0035"
Rod Journal Diameter: 2.123"-2.124"
Rod Bearing Clearance: .0005"-.0025"
Rod End Play: .005"-.010" inches
Rod Bolt Tension: 50-55 Lbs. Ft.
Main Bearing Journal Diameter:
#1: 2.478"-2.479"; #2: 2.5405"-2.5415";
#3: 2.6655"-2.6665"; #4: 2.6855"-2.6865;
Main Bearing Clearance: .0005" -.0025" for Front Main; .001"-.003" for Others
Crankshaft End Play: .004"-.008"
Main Bolt Tension: #1, 2, & 3: 100 Ft Lbs; #4, 140 Ft Lbs
Engine Bearing Data, 8 Cylinder Models
Camshaft End Play: Forward thrust is taken by a semi-circular flange in the front engine plate with the cylinder block taking the backward thrust
Camshaft Bearing Clearance: .0015"-.0035"
Rod Journal Diameter: 2.123"-2.124"
Rod Bearing Clearance: .0005"-.0025"
Rod End Play: .005"-.010" inches
Rod Bolt Tension: 50-55 Lbs. Ft.
Main Bearing Journal Diameter:
#1: 2.478"-2.489"; #2: 2.5405"-2.5415";
#3: 2.603"-2.604"; #4: 2.6655"-2.6665";
#5: 2.6855:-2.6865"
Main Bearing Clearance: .0005" -.0025"; Others .001"-.003"
Crankshaft End Play: .004"-.008"
Main Bolt Tension:
#1, 2, 3, & 4: 100 Ft Lbs; #5: 140 Ft Lbs
Delco-Remy Distributor Specifications - 6 Cylinder Models
Distributor #1110214
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 @ 325 RPM
Full Advance: 8 Degrees @ 1,200 RPM
Vacuum Advance Data:
Inches of Vacuum to Start Plunger Movement: 5" to 7"
Inches of Vacuum for Full Plunger Travel: 16" to 20"
Maximum Vacuum Advance: 8 Degrees
Delco-Remy Distributor Specifications - 8 Cylinder Models
Distributor #1110808
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 @ 350 RPM
Full Advance: 12 Degrees @ 1,600 RPM
Vacuum Advance Data:
Inches of Vacuum to Start Plunger Movement: 6-1/2" to 8-1/2"
Inches of Vacuum for Full Plunger Travel: 14" to 16"
Maximum Vacuum Advance: 6 Degrees
Delco-Remy Generator & Regulator Specifications
Generator #1102664
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 #1118201
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
Generator #1102680
Generator Output: 30 Amperes @ 2,050 RPM
Brush Spring Tension: 25 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 #1107034
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 #11007922
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.
Part #11007930
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 #651S
Float Level: 1/2"
Idle Screw Setting: 1/2 to 1-1/2 Turns
Pump Adjustment Using Gauge T109-117S: 16
Metering Rod Gauge: T-109-102
Anti-Percolator Adjustment: .020"
Fast Idle Setting: 5/8"
Unloader Setting: 3/8"
Choke Lockout Adjustment: 1/32"
Automatic Choke Setting: Index
Carter Carburetor Specifications, 8 Cylinder
Carburetor Model: WDO
Part #650S
Float Level: 3/16"
Idle Screw Setting: 1/2 to 1-1/2 Turns
Pump Adjustment Using Gauge T109-117S: 19
Metering Rod Gauge: T-109-113
Anti-Percolator Adjustment: With throttle closed, indicator lines should be flush with the tip of the anti-percolator plugs.
Fast Idle Setting: .015"
Unloader Setting: 1/4"
Automatic Choke Setting: 2 Rich
Carburetor Model: WDO
Part #550S-SA
Float Level: 15/64"
Idle Screw Setting: 1/2 to 1-1/2 Turns
Pump Adjustment Using Gauge T109-117S: 19
Metering Rod Gauge: T-109-113
Anti-Percolator Adjustment: With throttle closed, indicator lines should be flush with the tip of the anti-percolator plugs.
Fast Idle Setting: .015"
Unloader Setting: 1/4"
Automatic Choke Setting: 2 Rich
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 Cylinder Models
Lining Dimensions/Wheel in Inches: 21-5/16"
Width: Front, 2"; Rear, 1-3/4",
Thickness: 3/16"
Brake Shoe Clearance: .015"
Wheel Cylinder Bore:
Front: 1-1/8"
Rear: 1"
Master Cylinder Bore: 1"
Pedal Free Play: 3/16" *
* Adjust Pedal so Rubber Pad Under the Toe Board is Compressed to the Dimension Indicated.
Brake Specifications, 8 Cylinder Models
Lining Dimensions/Wheel in Inches: 21-5/16"
Width: Front, 2-1/4"; Rear, 2",
Thickness: 3/16"
Brake Shoe Clearance: .015"
Wheel Cylinder Bore:
Front: 1-1/8"
Rear: 1"
Master Cylinder Bore: 1"
Pedal Free Play: 3/16" *
* Adjust Pedal so Rubber Pad Under the Toe Board is Compressed to the Dimension Indicated.
Wheel Alignment Specifications, 6 & 8 Cylinder Models
Caster: - 3/8 Degrees
Camber: 0 Degrees
Toe In: 1-1/16" to 1/8"
Toe-Out on Turns:
Outer Wheel: 20 Degrees
Inner Wheel: 22-1/2 to 23-1/2 Degrees
Kingpin Angle: 4-5/6 Degrees
Rear Axle , 6 & 8 Cylinder Models
Ring Gear & Pinion Backlash: .004"-.008"
Drive Pinion Adjustment: Shims
Drive Pinion Bearing Adjustment: None
Axle Shaft End Play: .000"-.008"
Beginning Engine Numbers:
6 Cylinder Models: 6-188021
68 & Series: 8-127001
98 Series: 9-1001
Beginning Serial Numbers:
6 Cylinder, Series 66 66A-2001 Atlanta, Georgia
66B-1001 Framingham, Massachusetts
66C-21001 Southgate, California
66L-31001 Linden, New Jersey
66-16501 Lansing, Michigan
66-K9001 Kansas City, Missouri
66W-3001 Wilmington, Delaware
6 Cylinder, Series 76: 76A-2001 Atlanta, Georgia
76B-1001 Framingham, Massachusetts
76C-18001 Southgate, California
76L-31001 Linden New Jersey
76-164001 Lansing, Michigan
76K-9001 Kansas City, Missouri
76W-3001 Wilmington, Delaware
6 Cylinder, Series 68: 68A-2001 Atlanta, Georgia
68B-1001 Framingham, Massachusetts
68C-6001 Southgate, California
68L-8001 Linden, New Jersey
68-25001 Lansing, Michigan
68K-3001 Kansas City, Missouri
68W-2001 Wilmington, Delaware
8 Cylinder, Series 78: 78A-2001 Atlanta, Georgia
78B-1001 Framingham, Massachusetts
78C-11001 Southgate, California
78L-6001 Linden, New Jersey
78-72001 Lansing, Michigan
78-K7001 Kansas City, Missouri
78W-2001 Wilmington, Delaware
8 Cylinder, Series 98: 98A-65001 Atlanta, Georgia
98B-1001 Framingham, Massachusetts
98C-11001 Southgate, California
98L-20001 Linden, New Jersey
98-65001 Lansing, Michigan
98-K6001 Kansas City, Missouri
98W-1001 Wilmington, Delaware
1948 Oldsmobile Colors & Codes
Code Color PPG Code
20 Black 9200
21 Alpine Green Poly 40550
22-C Chariot Red 70193
23 TawneeBuff 20448
23-C Nankeen Cream 80341
24 Denmark Blue Poly 10453
25 Caspian Blue Poly 10371
26 Praline Brown Poly 20449
27-C Saxon Gray Poly 30395
28 Dawn Gray Poly 30490
29 Ivy Green Poly 40098
29-C Seafoam Green Poly 40085
32 Garnet Red Poly 50125
34 Cayuga Blue Poly 10425
39-C Norway Green Poly 40551
Two-Tones
21A Norway Green Upper & Alpine Green Poly Lower
23A Praline Brown Poly Upper & Tawnee Buff Lower
24A Caspian Blue Poly Upper & Denmark Blue Poly Lower
25A Denmark Blue Poly Upper & Caspian Blue Poly Lower
26A Tawnee Buff Upper & Praline Brown Poly Lower
28A Saxon Gray Poly Upper & Dawn Gray Poly Lower
28B Dawn Gray Poly Upper & Saxon Gray Poly Lower
29A Seafoam Green Poly Upper & Ivy Green Poly Lower
29B Ivy Green Poly Upper & Seafoam Green Poly Lower
34A Caspian Blue Poly Upper & Cayuga Blue Poly Lower
34B Cayuga Blue Poly Upper & Caspian Blue Poly Lower
39A Alpine Green Poly Upper & Norway Green Lower
Popular Options
DeLuxe Radio, Standard Radio, Condition-Air Heater & Ventilating System, Dual Flow Heater & Defroster, Windshield Washer, DeLuxe Steering Wheel, Directional Signals, Electric Clock, Spotlight, Auxiliary Driving Lights, Fog Lights, Backup Light, Trunk Light, Underhood Light, Glove Compartment & Map Light, Vanity Visor Mirror, Glare Proof Mirror, Rear Window Wiper, Outside Mirror, Fender Skirts, Cadet Sunvisor, Gas Tank Cover Lock, Chrome Wheel Trim Rings, Chrome Exhaust Extension, Heavy Duty Air Cleaner, Oil Filter, Hydramatic Transmission.
1948 Oldsmobile Historical Data
Total 1948 Oldsmobile Production was 173,518.
Copyright 1999, Custom Solutions & Services