1956 OLDSMOBILE

Model Designations:

Oldsmobile 88, 8 Cylinder, Model 88

Oldsmobile Super 88, 8 Cylinder, Model S-88

Oldsmobile 98, 8 Cylinder, Model 98

Oldsmobile 88,Body Styles:

2 Door Sedan, 5 Passenger, Body # 56-3611

Base Price: $2,166; Shipping Weight: 3,705

Production Total: 31,949

2 Door Hardtop Holiday Coupe, 5 Passenger, Body # 56-3637

Base Price: $2,330; Shipping Weight: 3,715

Production Total: 74,739

4 Door Sedan, 5 Passenger, Body # 56-3669

Base Price: $2,226; Shipping Weight: 3,761 Pounds

Production Total: 57,092

4 Door Hardtop Holiday Sedan, 5 Passenger, Body # 56-3639

Base Price: $2,397; Shipping Weight: 3,776 Pounds

Production Total: 52,239

Oldsmobile Super 88, Body Styles:

2 Door Sedan, 5 Passenger, Body # 56-3611D

Base Price: $2,301; Shipping Weight: 3,835 Pounds

Production Total: 5,465

2 Door Hardtop Holiday Coupe, 5 Passenger, Body # 56-3637SD

Base Price: $2,520; Shipping Weight: 3,838 Pounds

Production Total: 43,054

2 Door Convertible, 5 Passenger, Body # 56-3667DTX

Base Price: $2,726; Shipping Weight: 3,747 Pounds

Production Total: 9,561

4 Door Hardtop Holiday Sedan, 5 Passenger, Body # 56-3639SD

Base Price: $2,586; Shipping Weight: 3,905 Pounds

Production Total: 61,192

4 Door Sedan, 5 Passenger, Body # 56-3669D

Base Price: $2,363; Shipping Weight: 3,897 Pounds

Production Total: 59,728

Oldsmobile 98, Body Styles:

2 Door Hardtop Holiday Coupe, 5 Passenger, Body # 56-3037SDX

Base Price: $3,138; Shipping Weight: 3,978 Pounds

Production Total: 19,433

4 Door Sedan, 5 Passenger, Body # 56-3069D

Base Price: $2,969; Shipping Weight: 4,047

Production Total: 20,106

4 Door Hardtop Holiday Sedan, 5 Passenger, Body # 56-3039SDX

Base Price: $3,204; Shipping Weight: 4,061

Production Total: 42,320

2 Door Starfire Convertible, 5 Passenger, Body # 56-3067DX

Base Price: $3,380; Shipping Weight: 4,107 Pounds

Production Total: 8,581

Chassis:

Wheelbase:

Eighty-Eight & Super Eighty-Eight: 122"

Ninety-Eight: 126"

Tire Sizes:

88: 7.10 X 15"

Super 88: 7.60 X 15"

98: 8.00 X 15"

Rear Axle Ratios:

Information Not Available

General Engine Specifications:

Oldsmobile, Series 88, With 2 Barrel Carburetor:

Engine Type: Overhead Valve V-8

Bore & Stroke: 3-7/8" X 3-7/16"

Engine Displacement: 324.31 Cu. In.

Compresssion Ratio: 9.25 to 1

Taxable Horsepower: 48.05

Horsepower: 230 @ 4,400 RPM

Torque: 340 Ft. Lbs. @ 2,400 RPM

Normal Oil Pressure: 35-45 PSI

Oldsmobile, Series 88, With 4 Barrel Carburetor:

Engine Type: Overhead Valve V-8

Bore & Stroke: 3-7/8" X 3-7/16"

Engine Displacement: 324.31 Cu. In.

Compresssion Ratio: 9.25 to 1

Taxable Horsepower: 48.05

Horsepower: 240 @ 4,400 RPM

Torque: 350 Ft. Lbs. @ 2,480 RPM

Normal Oil Pressure: 35-45 PSI

Oldsmobile, Series Super 88 & 98:

Engine Type: Overhead Valve V-8

Bore & Stroke: 3-7/8" X 3-7/16"

Engine Displacement: 324.31 Cu. In.

Compresssion Ratio: 9.25 to 1

Taxable Horsepower: 48.05

Horsepower: 240 @ 4,000 RPM

Torque: 350 Ft. Lbs. @ 2,800 RPM

Normal Oil Pressure: 35-45 PSI

Capacities:

All Series:

Cooling System:

Without Heater: 20-1/2 Quarts

With Heater: 21-1/2 Quarts

Radiator Cap Pressure: 7 PSI

Fuel Tank: 20 Gallons

Engine Oil Refill: 5 Quarts*

Manual Transmission: 2-1/2 Pints

Hydra-Matic Transmission: 11 Quarts

Rear Axle: 4-3/4 Pints

* Add 1 Quart for Oil Filter

Tune Up Specifications:

All Series:

Ground Polarity: Negative

Voltage: 12 Volts

Spark Plug Type: AC 44

Spark Plug: .030"

Point Gap: Turn Adjusting Screw clockwise until engine misfires, then back screw out 1/2 turn

Firing Order: 1-8-7-3-6-5-4-2

Ignition Timing: Slot on Pulley

Engine Idle Speed: 400 RPM (In Drive for Automatic Transmission)

Cylinder Head Torque: 65-70 Ft Lbs

Compression Pressure @ Cranking Speed: 150 PSI (Minimum)

Valve Specifications:

All Series:

Running Clearance:

Intake Zero

Exhaust Zero

Valve Seat Angle: 45 Degrees

Valve Timing: Intake Opens 11-1/2 Degrees Before Top Dead Center

Exhaust Closes 13 degrees After Top Dead Center

Valve Spring Pressure: 190 Lbs @ 1-1/2 inches

Valve Lift, Zero Lash:

Intake: .418"

Exhaust: .418"

Valve Stem Clearance:

Intake .0017"-.004"

Exhaust .0022"-.0045"

Valve Stem Diameter:

Intake: .3417"-.3425"

Exhaust: .3930"-.3938"

Pistons, Rings, Wristpins, Crankshaft & Bearings Data:

All Series:

Piston Removal: From Above

Fitting Pistons:

Shim Thickness: .0015"

Pounds Pull on Scale: 5 to 12

Ring End Gap:

Compression Ring: .010"

Oil Ring: .013"

Wristpin Diameter: .9805"

Rod Bearings:

Shaft Diameter: 2.249"-2.250"

Rod Bearing Clearance: .001"-.003"

Rod End Play: .002"-.011"

Rod Bolt Torque: 45-50 Ft. Lbs.

Main Bearings:

Shaft Diameter:

Rear Bearing: 2.623"-2.624"

Other Bearings: 2.498"-2.499"

Main Bearing Clearance:

Front: .0005"-.002"

Rear: .002"-.0035"

Others: .0005"-.003"

Crankshaft End Play: .004"-.008"

Thrust on Rear Bearing

Main Bolt Torque:

Rear: 140 Ft. Lbs

Others: 100 Ft. Lbs

Delco-Remy Distributor Specifications:

All Series:

Distributor #1110857

Rotation: Counter-Clockwise

Cam Angle: 30 Degrees

Breaker Point Opening:

Turn Adjusting Screw clockwise until engine misfires, then back screw out 1/2 turn

Condenser Capacity: .18 -.23 Mfds.

Breaker Arm Spring Tension: 19-23 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 575 RPM

Full Advance: 10 Degrees @ 1,950 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger Movement: 4-1/2" to 6-1/2"

Inches of Vacuum for Full Plunger Travel: 15-1/2" to 16"

Maximum Vacuum Advance: 10-3/4 Degrees

Delco-Remy Generator & Regulator Specifications:

Generator #1102003

Generator Output: 30 Amperes @ 2,150 RPM

Brush Spring Tension: 28 Ounces

Direction of Rotation: Clockwise

Field Current @ 12 Volts: 1.48 to 1.62 Amperes

Regulator #1119003

Cutout Relay:

Voltage to Close Points: 12.6

Armature Air Gap: .020"

Voltage Regulator Setting: 14.3 Volts

Current Regulator Setting: 30 Amperes

Current & Voltage Armature Air Gap: .075"

Ground Polarity: Negative

Delco-Remy Starting Motor Specifications:

Part #1107638

Rotation: Clockwise

Brush Spring Tension: 35 Ounces (Minimum)

No Load Test: 95 Amperes, 10.1 Volts, @ 3,500 RPM

Lock Test: 470 Amperes, 5.4 Volts, 10-1/2 Ft. Lbs. of Torque.

Rear Axle & Brake Specifications:

Ring Gear & Pinion Backlash: .004"-.008"

Drive Pinion Adjustment: Shims

Drive Pinion Bearing Adjustment: Spacer

Wheel Cylinder Bore:

Front: 1-3/32"

Rear: 31/32"

Master Cylinder Bore: 1"

Wheel Alignment Specifications:

All Series:

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: 6 Degrees

Rochester 4GC Carburetor Specifications:

Carburetor #7007222, 7007221, 7009902

Float Level: 1-5/8"

Float Drop: 2-1/4"

Idle Screw Setting, Turns to Open: 1-1/2

Choke Setting: 1 Lean

Pump Rod: 1-1/16"

Fast Idle Setting: .024"

Choke Rod: .052"

Choke Unloader: .115"

Secondary Throttle Lockout: .015"

Secondary Throttle Coutour Clearance: .030"

Idle Air Vent: .063"

Rochester 2GC Carburetor Specifications:

Carburetor #7007223

Float Level: 1-7/16"

Float Drop: 2"

Idle Screw Setting, Turns to Open: 1-1/2

Choke Setting: 1 Rich

Pump Rod: 5/16"

Fast Idle Setting: .024"

Choke Rod: .073"

Choke Unloader: .155"

Idle Air Vent: 3/32"

1956 Oldsmobile Paint Colors & Codes:

Code Color

10 Black

20 Festival Red

30 Ice Green

31 Canyon Green

32 Tropical Green

40 Cirrus Blue

41 Artesian Blue

42 Nordic Blue

50 Sterling Gray

51 Juneau Gray

52 Charcoal Gray

60 Alcan White

61 Citron Cream

62 Terra Cotta

63 Shantung Beige

64 Citation Bronze

65 Lime

66 Island Coral

70 Turquoise

90 Antique White

91 Gold Mist

92 Rose Mist

Popular Options:

DeLuxe Radio, Super DeLuxe Radio, Rear Seat Speaker, Power Antenna, DeLuxe Heater & Defroster, Air Conditioning, Power Steering, Power Brakes, Power Windows, 6 Way Power Seat, DeLuxe Steering Wheel & Horn Ring, Back Up Lights, Windshield Washer, Tinted Glass, Courtesy Lights, Outside Visor, Padded Dash, Whitewall Tires, Autronic Light Headlight Dimmer, Stainless Steel Wheel Trim Rings, DeLuxe Wheel Discs, Wire Wheel Covers, Exhaust Extension, Vanity Visor Mirror, Trunk Light, Underhood Light, Glove Compartment Light, Parking Brake Signal Light, Spot Light, Heavy Duty Air Cleaner, Oil Filter, Automatic Transmission.

1956 Oldsmobile Historical Data:

Total 1956 Oldsmobile Production was 486,158.

Promotional Model Cars:

Plastic: Oldsmobile 98 4 Door Hardtop

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