1966 CADILLAC

Model Designations:

Cadillac Calais, Series 682

Cadillac DeVille, Series 683

Cadillac Fleetwood Sixty-Special, Series 680/681

Fleetwood Eldorado, Series 684

Fleetwood 75, Series 697

Fleetwood 75, Series 698

Cadillac Calais, 8 Cylinder, Body Styles

2 Door Hardtop Coupe, 6 Passenger, Body Code: 68257-G

Base Price: $4,986; Shipping Weight: 4,390 Pounds;

Production Total: 11,080

4 Door Hardtop Sedan, 6 Passenger, Body Code: 68239-N

Base Price: $5,171; Shipping Weight: 4,465 Pounds

Production Total: 13,025

4 Door Sedan, 6 Passenger, Body Code: 68269-K

Base Price: $5,171; Shipping Weight: 4,460 Pounds;

Production Total: 4,575

Cadillac Deville, 8 Cylinder, Body Styles:

2 Door Convertible Coupe, 6 Passenger, Body Code: 68367-F

Base Price: $5,555; Shipping Weight: 4,445 Pounds;

Production Total: 19,200

2 Door Hardtop Coupe DeVille, 6 Passenger, Body Code: 68357-J

Base Price: $5,339; Shipping Weight: 4,460 Pounds

Production Total: 50,580

4 Door Hardtop Sedan, 6 Passenger; Body Code: 68339-B

Base Price: $5,581; Shipping Weight: 4,515 Pounds

Production Total; 60,550

4 Door Sedan, 6 Passenger, Body Code: 68369-L

Base Price: $5,581; Shipping Weight: 4,535 Pounds;

Production Total: 11,860

Cadillac Fleetwood, Sixty-Special, Series 680, 8 Cylinder, Body Styles

4 Door Sedan, 6 Passenger, Body Code: 68069-M

Base Price: $6,378; Shipping Weight: 4,615 Pounds

Production Total: 5,445

Cadillac Fleetwood, Sixty-Special, Series 681, 8 Cylinder, Body Styles

4 Door Brougham, 6 Passenger, Body Code: 68169-P

Base Price: $6,695; Shipping Weight: 4,616 Pounds

Production Total: 13,630

Fleetwood Eldorado, 8 Cylinder, Body Styles:

2 Door Eldorado Convertible, 6 Passenger, Body Code: 68567-E

Base Price: $6,631; Shipping Weight: 4,500 Pounds

Production Total: 2,250

Cadillac Fleetwood 75, 8 Cylinder, Body Styles

4 Door Sedan, 9 Passenger, Body Code: 69723-R

Base Price: $10,312; Shipping Weight: 5,320 Pounds;

Production Total: 980

4 Door Limousine, 9 Passenger, Body Code: 69733-S

Base Price: $10,521; Shipping Weight: 5,435 Pounds;

Production Total: 1,037

Cadillac Fleetwood 75, (Chasis) 8 Cylinder, Body Styles

Commercial Chasis: Body Code: 69890-Z

Production Total: 2,463

General Specifications, All Series:

Wheelbase:

Series 60S: 133.0"

Calais & DeVille: 129.5"

Series 75: 149.8"

Commercial Chasis: 156"

Tire Sizes:

Series 75: 8.20 X 15"

Eldorado: 9.00 X 15"

All Others: 8.00 X 15"

Engine Specifications:

Engine Type: Overhead Valve, V-8

Bore & Stroke: 4.1300" X 4.000"

Engine Displacement: 429 Cu. In.

Compresssion Ratio: 10.50 to 1

Taxable Horsepower: 54.58

Horsepower: 340 @ 4,600 RPM

Torque: 480 Ft. Lbs. @ 3,000 RPM

Normal Oil Pressure: 30-35 PSI

Carburetor: 4 Barrel

Capacities, Series:

All Series, Except Series 75:

Cooling System:

With Heater: 17.2 Quarts

With Air Conditioning: 18.2 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thrermostat Opening: 175 Degrees

Fuel Tank: 26 Gallons;

Engine Oil Refill: 4 Quarts*

Hydramatic Transmission: 3 Quarts (Oil Pan Only)

Rear Axle: 5 Pints

* Add 1 Quart for Filter

Series 75:

Cooling System:

With Air Conditioning: 20.7 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thrermostat Opening: 175 Degrees

Fuel Tank: 26 Gallons;

Engine Oil Refill: 4 Quarts*

Hydramatic Transmission: 3 Quarts (Oil Pan Only)

Rear Axle: 5 Pints

* Add 1 Quart for Filter

Tune Up Specifications, 8 Cylinder:

Ground Polarity: Negative

Voltage: 12 Volts

Spark Plug Type: AC 44

Spark Plug: Gap .035;

Point Gap: Turn Adjusting screw in until engine begins to misfire, then back screw off 1/2 turn.

Distributor Cam Angle: 30 degrees

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

Ignition Timing: 5 Degrees BTDC on Damper

Engine Idle Speed: 480 RPM (In Drive) (A/C Off)

Minimum Compression Pressure @ Cranking Speed: 175 PSI (Minimum)

Fuel Pump Pressure: 5-1/4 to 6-1/2 PSI

Valve Specifications, 8 Cylinder:

Valve Lash: .025" Minimum

Valve Angles:

Seat: 45 Degrees

Face: 44 Degrees

Valve Spring Height: 1-15/16"

Valve Spring Pressure: 160 Lbs @ 1.5 inches

Valve Stem Clearance: Intake .0005"-.0025"

Exhaust .001"-.0025"

Valve Stem Diameter:

Intake: .3415"-.3425"

Exhaust: .3415"-.3420"

Pistons, Pins, Rings, Crankshaft & Bearings Data, 8 Cylinder:

Piston Rings:

Ring End Gap:

Compression: .013"

Oil: .013"

Wrist Pin Diameter: .9995"

Rod Bearings:

Shaft Diameter: 2.2488"-2.2493"

Rod Bearing Clearance: .0005.0021"

Main Bearings:

Shaft Diameter: 3.000"

Main Bearing Clearance: .0008"-.0029"

Thrusk on Bearing #3

Crankshaft End Play: .001"-.007"

Engine Tightening Specifications:

Spark Plugs: 25 Ft. Lbs.

Cylinder Head Bolts: 60 Ft. Lbs.

Intake Manifold:

Bolt: 30 Ft. Lbs.

Nut: 25 Ft. Lbs.

Exhaust Manifold:

Engines with Gaskets: 60 Ft. Lbs.

Engines with no Gaskets: 50 Ft. Lbs.

Rocker Arm Shaft Bracket: 75 Ft. Lbs.

Rocker Arm Cover: 28 Inch Lbs.

Connecting Rod Cap Bolts: 40 Ft. Lbs.

Main Bearing Cap Bolts: 95 Ft. Lbs.

Flex Plate to Crankshaft: 75 Ft. Lbs.

Vibration Damper or Pulley: Pulley to Damper Screws: 18 Ft. Lbs.

Brake Specifications, All Series:

Brake Drum Diameter: 12.000" (+ or - .005")

Wheel Cylinder Bore:

Front: 1-3/16"

Rear: 1"

Master Cylinder Bore: 1"

Note: Power Brakes are Standard Equipment

Wheel Alignment Specifications, All Series:

Caster: - 1 Degree

Camber: Zero Degrees

Toe In: 3/16"-1/4"

Toe-Out on Turns:

Outer Wheel: 20 Degrees

Inner Wheel: 22 Degrees, 11 Minutes

Alternator Specifications:

Model: 1100692

Rated Hot Output: 55 Amperes

Field Current, 12 Volts @ 80 Degrees: 2.2 to 2.6 Amperes

Output @ 14 Volts:

2,000 RPM: 32 Amperes

5,000 RPM: 50 Amperes

Regulator #1119515

Field Relay:

Air Gap: .015"

Point Gap: .030"

Closing Voltage: 2.3 to 3.7 Volts

Voltage Regulator:

Air Gap: .060"

Point Gap: .014"

Voltage @ 125 Degrees: 13.5 to 14.4 Volts

Model: 1100691

Rated Hot Output: 42 Amperes

Field Current, 12 Volts @ 80 Degrees: 2.2 to 2.6 Amperes

Output @ 14 Volts:

2,000 RPM: 28 Amperes

5,000 RPM: 40 Amperes

Regulator #11195125

Field Relay:

Air Gap: .015"

Point Gap: .030"

Closing Voltage: 2.3 to 3.7 Volts

Voltage Regulator:

Air Gap: .060"

Point Gap: .014"

Voltage @ 125 Degrees: 13.5 to 14.4 Volts

Distributor Specifications:

Distributor #1111131

Rotation: Clockwise

Breaker Point Opening: Turn adjusting screw in until engine misfires, then back off 1/2 turn.

Cam Angle: 30 Degrees

Breaker Arm Spring Tension: 19-23 Ounces

Centrifugal Advance Data:

Advance Starts: 1 Degree @ 400 RPM

Full Advance: 8 Degrees @ 2,000 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger Movement: 7.5 to 9.5 Inches

Maximum Vacuum Advance: 12 Degrees @ 15" Vacuum

Starting Motor Data:

Series 75:

Starter # 1107368

Brush Spring Tension: 35 Ounces

No Load Test: 70-105 Amperes, 10.6 Volts, @ 7,800-12.000 RPM

Torque Test: 480-540 Amperes, 3.0 Volts

All Except Series 75:

Starter # 1107367

Brush Spring Tension: 35 Ounces

No Load Test: 70-105 Amperes, 10.6 Volts, @ 7,800-12,000 RPM

Torque Test: 480-540 Amperes, 3.0 Volts

Carter Carburetor Data:

Model AFB

Carburetor # 4168S; 4169S; 4171S

Mixture Screws, Turns to Open: 2-1/2

Fast Idle Speed: 1,725 RPM

Float Level:

Primary: 3/8"

Secondary: 3/8"

Float Drop

Primary: 2"

Secondary: 2"

Pump TravelSetting: 5/16"

Choke Unloader Setting: 9/32"

Choke Setting: Index

Rochester Carburetor Adjustments:

Carburetor Model: 4GC

Part #7025030, 7025031

Idle Screw Mixture: 2 Turns

Float Level:

Primary: 1-7/16"

Secondary: 1-3/8"

Float Drop:

Primary: 1-1/2"

Secondary: 1-1/16"

Vacuum Assist Spring: 1-1/16"

Pump Rod Location: Outer

Choke Setting: Index

Fast Idle: 1,700 RPM

Popular Options:

Air Conditioning; Controlled Differential; Cruise Control; Door Edge Guards; Tinted Glass; License Plate Frame; Power Seats; Seat Warmer; Reclining Seat with Headrests; Bucket Seats on Eldorado; Power Door Locks; Power Headlight Control; Power Windows; Power Vent Windows; Radio with Rear Speaker; Radio with Rear Speaker & Remote Control; AM-FM Radio; Adjustable Steering Wheel; Remote Trunk Lock; Twilight Sentinal; White Sidewall Tires.

1966 Cadillac Historical Data:

The 1966 Cadillac model year introduction was on October 14, 1965.

Total 1966 Cadillac Production was 196,675.

Paint Colors & Codes:

Code Color Name

10 Sable Black

12 Strathmore White

16 Starlight Silver

18 Summit Gray

20 Mist Blue

24 Marlin Blue

26 Nocturne Blue

28 Caribbean Aqua

30 Cascade Green

36 Inverness Green

40 Cape Ivory

42 Sandalwood

44 Antique Gold

46 Autumn Rust

48 Flamenco

49 Claret Maroon

90 Cobalt Firemist

92 Crystal Firemist

96 Tropic Green Firemist

97 Florentine Gold Firemist

98 Ember Firemist

Promotional Model Cars:

Plastic: Cadillac Coupe DeVille Hardtop; Cadillac Convertible

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