Cadillac Models & History 1975

For 1975, there were six models:

  • Calais: two-door hardtop coupe and four-door hardtop sedan
  • DeVille: two-door coupe and four-door sedan
  • Fleetwood Brougham: four-door sedan
  • Fleetwood Seventy-Five: four-door sedan, four-door limousine, and commercial chassis used in hearses and ambulances, etc.
  • Fleetwood Eldorado: two-door hardtop coupe and two-door convertible
  • Seville: four-door sedan

1975 Cadillac Coupe deville

I. D. DATA

The serial number system and locations were unchanged.
The sixth symbol changed to a “5” for 1975.
Calais Coupes were numbered 6C47S5?100001 up
Calais Sedans were numbered 6C49S5?100001 up
DeVille Coupes were numbered 6D47S5?100001 up
DeVille Sedans were numbered 6D49S5?100001 up
Eldorado Coupes were numbered 6L47S59?100001 up
Eldorado Convertibles were numbered 6L47S59?100001 up
Broughams were numbered 6B69S5?100001 up
Seventy-Fives were numbered 6F3S5?100001 up
Sevilles were numbered 6S69R6Q?500001 up.

Sevilles sold in 1975 were considered 1976 models and all production of this model was quartered in the Detroit assembly plant, Code “Q”). Engine code “R” was now applied to the new 350 cubic inch Seville V-8.

SPECIFICATIONS

FLUID CAPACITIES

Engine V8 500cc (8.2L)
Crankcase 4 or 5 qt
Crankcase with new filter 5 or 6 qt
AutomaticTransmission after draining 8 or 10 pt
Drive Axle 5 or 4 pt
Fuel tank 27.5 gal(US)
Cooling with heater 21.3 or 23 qt
Cooling with A/C 21.3 or 23 qt
Heavy duty Cooling 25.8 qt

GASOLINE ENGINE TUNE-UP SPECS

Engine V.I.N Code S S
Engine type V8-500cc(8.2L) V8-500cc(8.2L)
Fuel delivery 4 bbl EFI
Manufacturer Cadillac Cadillac
Original Spark plug R45NSX R45NSX
Gap 0.060 in 0.060 in
Distributor Electronic Electronic
Ignition timing (BTDC) 12°
Intake valve opens (BTDC) 21 21
Fuel pump pressure 5¼ to 6½ psi 39 min.
Idle speed 600/400 rpm 600 rpm

ALTERNATOR AND REGULATOR SPECS

Part # 1100940 1100937 1101015 1117144
Field current @ 12 V 4.0 – 4.5 4.0 – 4.5 4.0 – 4.5 4.0 – 4.5
Output 42 amps 63 amps 80 amps 145 amps
Regulator Field-Relay: Air Gap Solid State Solid State Solid State Solid State
Regulator Field-Relay: Point Gap
Regulator Field-Relay: Volts to Close
Regulator Air Gap
Regulator Point Gap
Regulator Volts @ 75° 13.8 – 14.8 13.5 – 14.4 13.8 – 14.8 13.5 – 14.4

BATTERY AND STARTER SPECS

Engine V8-500cc (8.2L)
Battery Ampere Hour Capacity 74
Battery Volts 12
Battery Terminal Grounded Neg.
Starter, Lock Test, Amps Not Recommended
Starter, Lock Test, Volts
Starter, Lock Test, Torque
Starter, No-Lead Test, Amps 65 – 95
Starter, No-Lead Test, Volts 9
Starter, No-Lead Test, RPM 7000 – 10500
Starter, Brush Spring Tension 35 oz. min.

GENERAL ENGINE SPECS

Engine V.I.N Code S S
Engine type V8-500cc(8.2L) V8-500cc(8.2L)
Manufacturer Cadillac Cadillac
Fuel delivery 4 bbl EFI
Horsepower [email protected] [email protected]
Torque [email protected] [email protected]
Bore x Stoke 4.300 x 4.304 4.300 x 4.304
Compression Ratio 8.25:1 8.25:1
Oil pressure 35 psi 35 psi

CRANKSHAFT SPECS

Engine type V8-500cc(8.2L)
Main Brg Journal Dia. 3.250
Main Brg Oil Clearance 0.0001 – 0.0026
Shaft End-play 0.002 – 0.012
Thrust on No. 3

CONNECTING ROD SPECS

Engine type V8-500cc(8.2L)
Journal Dia. 2.5000
Oil Clearance 0.0005 – 0.0028
Side Clearance 0.008 – 0.020

PISTON AND RING SPECS

Engine type V8-500cc(8.2L)
Piston-Bore Clearance 0.0006 – 0.0010
Ring Side Clearance: Top Compression 0.0017 – 0.0040
Ring Side Clearance: Bottom Compression 0.0017 – 0.0040
Ring Side Clearance: Oil Control None (side sealing)
Ring Gap: Top Compression 0.013 – 0.025
Ring Gap: Bottom Compression 0.013 – 0.025
Ring Gap: Oil Control 0.015 – 0.055

VALVE SPECS

Engine type V8-500cc(8.2L)
Seat Angle 45°
Face Angle 44°
Spring Test Pressure 160 lb @ 1.50 in.
Spring Installed Height 11516 in. (1.9375″)
Stem-to-Guide Clearance: Intake 0.0010 – 0.0027
Stem-to-Guide Clearance: Exhaust 0.0010 – 0.0027
Stem Diameter: Intake 0.3416
Stem Diameter: Exhaust 0.3416

TORQUE SPECS

Engine type V8-500cc(8.2L)
Cyl. Head Bolts 115 ft. lb
Rod Brg Bolts 40 ft. lb
Main Brg Bolts 90 ft. lb
Crankshaft Damper or Pulley Bolt Press fit
Flywheel to Crankshaft Bolts 75 ft. lb
Intake Manifold 30 ft. lb
Exhaust Manifold 35 ft. lb

CARBURETOR SPECS

Carb ID 7045230 (M4ME) 7044530 (M4ME)
Float Level 15/32 in 15/32 in
Air Valve Spring 7/16 turn 1/2 turn
Pump Rod 3/8 in 3/8 in
Primary Vacuum Break 0.160 in 0.230 in
Secondary Vacuum Break 0.130in 0.230 in
Choke Rod 0.080 in 0.080 in
Choke Unloader 0.215 in 0.215 in
Fast Idle Speed 1250 rpm 1250 rpm

WHEEL ALIGNMENT SPECS

Feature Eldorado Fleetwood 75 Full size (except Fleetwood 75)
Caster Range 1°N – 1°P 2°N – 0° 1°N – 1°P
Caster Pref. 1°N
Camber LH wheel Range 3/4°N – 3/4°P ¾°N – ¾°P 3/4°N – 3/4°P
Camber LH wheel Pref.
Camber RH wheel Range 1°N – ½°P 1°N – ½°P 1°N – ½°P
Camber RH wheel Pref. ½°P ¼°N ¼°N
Toe-In 0″ 18 in. 18 in.
Steering Axis Inclination 11°

HISTORICAL NOTES

1975 Cadillac Notes

  • Dealer introductions took place September 19, 1974.
  • Model year production was 264,731 cars.
  • Lower axle ratios were used to improve fuel mileage except on limousines.
  • This is the first time prices on production models surpassed the price of 1957-1960 Eldorado Broughams.
  • Edward C. Kennard was general manager
  • Robert J. Templin was chief engineer
  • Wayne Kady was chief designer (Cadillac Studio)
  • F. T. Hopkins was general sales manager
  • Cadillac production figures
Calais8,300 (increased 1,417)
Sedan de Ville63,352 (increased 2,933)
Coupe de Ville110,218 (decreased 1,983)
Eldorado44,752 (increased 4,340)
Seville16,355 ()
Series 6018,755 (increased 505)
Series 752,999 (decreased 1,166)

1975 Automotive Notes

  • New car sales drop by nearly two million
  • New names and models appear: Astre, Bobcat, Charger SE, Cordoba, Elite, Granada, Monarch, Monza, Pacer, Seville, Skyhawk, Starfire
  • All major automakers install catalytic converters
  • Automakers are offering large rebates in order to sell cars
  • The last American convertibles are built (except for Cadillac); automakers fear a federal rule on rollover protection (which never arrives)
  • GM news:
  • Elliott M. Estes was president of GM
  • Thomas A. Murphy was chairman of the board at GM
    • In spite of overall sales, Chevrolet outsells Ford by about 200,000 units
    • Oldsmobile moves from fourth to third; Pontiac is fourth; and Buick moves up one
    • Monza, Starfire, and Skyhawk are built in Canada
    • Skyhawk and Starfire are powered by V-6 engines
    • Monza is powered by the Vega 4 or small V-8 engine
    • Seville promotes it quality and “international” size — the smallest Caddy in over 50 years — in order to attract Mercedes-Benz and BMW buyers
    • Seville uses a 350-cid V-8 (5.7 litre) with Bendix fuel injection
    • Other Cadillacs have as standard a 500-cid V-8 (8.2 litre) with 190 net horsepower
    • Cosworth Vega is introduced
    • Experimental air bags are installed in some 1974-75 Buicks, Cadillacs, and Oldsmobile — many owners are not aware they are in the steering wheel
    • Sporty Monza 2+2 fastback/hatchback arrives based on the Vega
  • Ford news:
    • The “precision-size” Granada and Monarch feature a mock-Mercedes look and becomes big sellers
    • Ford promotes low fuel consumption cars: Pinto, Mustang, and Bobcat
    • Ford wants an extension of current emissions standard until after the 1981 models
    • Popular demand makes a 302-cid V-8 (5 litre)available in the Mustang II
    • Mercury changes the grille on the Pinto to create the Bobcat
  • Chrysler news:
    • Plymouth drops from third to sixth place
    • Cordoba and Charger SE are built in Canada
    • Cordoba is a personal luxury coupe selling over 150,000 units in its first year
    • Dodge Charger SE is a clone to the Cordoba, but does not sell as well
    • Mid-size Plymouth is now the Fury; full-size models are Gran Fury
  • AMC news:
    • AMC introduces the egg-shaped Pacer as the “first wide small car”
    • AMC plans to put a Wankel rotary engine in the Pacer does not materialize
    • AMC introduces an overdrive transmission imported from England
  • Other makes news:
    • Borg-Warner releases its first US-built 5-speed transmission
    • Series III Excalibur debuts with a big Chevrolet 454-cid V-8 (7.4 litre)
  • Top American Automobile Corporations for 1975


1. General Motors3,665,990
2. Ford2,076,101
3. Chrysler979,216
4. AMC241,501
5. Others665


  • Top model year production for 1975
Chevrolet1,755,773
Ford1,569,608
Oldsmobile631,795
Pontiac531,922
Buick481,768
Skyhawk29,448
Apollo23,379
Skylark39,754
Century116,086
Regal67,372
LeSabre109,201
Estate Wagon13,740
Electra 22595,030
Riviera17,306
Plymouth454,105
Mercury404,650
Dodge377,462
Cadillac264,732
Seville16,355
Calais8,300
DeVille173,570
Eldorado44,752
Fleetwood Brougham18,755
Series Seventy-Five3,000
Chrysler251,549
AMC241,501
Gremlin45,848
Pacer72,158
Matador59,582
Lincoln101,843
Imperial8,830
Checker450
Avanti II125
Excalibur90