Cadillac Models & History 1989
Cadillac for 1989 offered six car lines powered by V-8 engines. The Cimarron was not produced for 1989. New model highlights included longer and restyled de Ville and Fleetwood models, a more powerful Allanté and refinements in the Seville, Eldorado and Brougham. The Seville was now available in a limited edition Seville Touring Sedan (STS) form. This new model was equipped with a retuned European-feel suspension package for more precise steering control and a firmer feel of the road. The limited production Fleetwood Sixty Sedan had new front leather seats created by Italian designer Giorgelto Giugiaro that featured a split frame design with triple lumbar support. The Allanté received a substantial power boost to 200 horsepower that made it capable of 0-60 acceleration in less than 8.5 seconds. New comfort and convenience features available in 1989 included an express-down driver’s window, electrochromic inside rearview mirror, ElectriClear windshield and an oil life indicator.
Cadillac’s 4.5 liter digitally fuel-injected V-8 was the powerplant for the de Ville, Fleetwood, Seville, and Eldorado models. Cadillac claimed its cars, capable of 0-60 mph in less than 10 seconds, were the fastest domestically produced luxury cars available.
CHASSIS
| Model | Wheelbase | Overall length | Height | Width | Front Tread | Rear Tread | Standard Tires |
| Coupe de Ville | 110.8 in. | 202.3 in | 55.0 in. | 72.5 in. | 60.3 in. | 59.8 in. | Michelin P205/70R15 |
| Fleetwood coupe | 110.8 in. | 202.3 in | 55.0 in. | 72.5 in. | 60.3 in. | 59.8 in. | Michelin P205/70R15 |
| Sedan de Ville | 113.8 in. | 205.3 in | 55.0 in. | 72.5 in. | 60.3 in. | 59.8 in. | Michelin P205/70R15 |
| Fleetwood sedan | 113.8 in. | 205.3 in | 55.0 in. | 72.5 in. | 60.3 in. | 59.8 in. | Michelin P205/70R15 |
| Sixty Special | 113.8 in. | 205.3 in | 55.0 in. | 72.5 in. | 60.3 in. | 59.8 in. | Michelin P205/70R15 |
| Seville | 108.0 in. | 191.4 in | 53.7 in. | 71.7 in. | 59.9 in. | 59.9 in. | Michelin P205/70R15 |
| Seville Touring | 108.0 in. | 191.4 in | 53.7 in. | 71.7 in. | 59.9 in. | 59.9 in. | Goodyear Eagle GT+4 P215/65R15 |
| Eldorado | 108.0 in. | 190.8 in | 53.7 in. | 70.9 in. | 59.9 in. | 59.9 in. | Michelin P205/70R15 |
| Allanté | 99.4 in. | 178.6 in | 52.2 in. | 73.5 in. | 60.4 in | 60.4 in. | Goodyear Eagle VL P225/55VR16 |
| Brougham | 121.5 in. | 221 in | 56.7 in. | 76.5 in. | 61.7 in. | 60.7 in. | Michelin P225/75R15 |
SPECIFICATIONS
FLUID CAPACITIES
| Engine | V8 273cc (4.1L) | V8 307cc (5.0L) |
| Crankcase | 5 qt | 4 qt |
| Crankcase with new filter | 5 qt | 5 |
| AutomaticTransmission after draining | 13 pt | 10.6 pt |
| Drive Axle | NA | 4.25 pt |
| Fuel tank | 18.8 gal(US) | 25.0 gal(US) |
| Cooling with heater | 12.1 qt | 15.2 qt |
| Cooling with A/C | 12.1 qt | 15.2 qt |
| Heavy duty Cooling | NA | NA |
GASOLINE ENGINE TUNE-UP SPECS
| Engine V.I.N Code | 5 | Y |
| Engine type | V8-273cc (4.5L) | V8-307cc (5.0L) |
| Fuel delivery | DFI | 4 bbl |
| Manufacturer | Cadillac | Oldsmobile |
| Original Spark plug | R44LTS6 | FR3LS6 |
| Gap | 0.060 in. | 0.060 in. |
| Distributor | Electronic | Electronic |
| Ignition timing (BTDC) | See underhood sticker | See underhood sticker |
| Intake valve opens (BTDC) | See underhood sticker | See underhood sticker |
| Fuel pump pressure | 12-14 | 5½-6½ |
| Idle speed | See underhood sticker | See underhood sticker |
ALTERNATOR AND REGULATOR SPECS
| Part # | 1101302 | 1101304 | 1101490 |
| Field current @ 12 V | 4-4.5 | 4-4.5 | 4-4.5 |
| Output | 94 amps | 94 amp | 120 amp |
| Regulator | Solid state | Solid state | Solid state |
| Volts @ 75° | 13.8-14.8 | 13.8-14.8 | 13.8-14.8 |
GENERAL ENGINE SPECS
| Engine V.I.N Code | 5 | Y |
| Engine type | V8-273cc(4.5L) | V8-307cc(5.0L) |
| Manufacturer | Cadillac | Oldsmobile |
| Fuel delivery | DFI | 4 bbl |
| Horsepower | 155@4200 | 140@3200 |
| Torque | 240@2800 | 255@2000 |
| Bore x Stoke | 3.622 x 3.307 | 3.800 x 3.385 |
| Compression Ratio | 9.1:1 | 7.9:1 |
| Oil pressure | 37 psi@1500 RPM | 30-45 psi@1500 RPM |
CRANKSHAFT SPECS
| Engine type | V8-273cc(4.5L) | V8-307cc(5.0L) |
| Main Brg Journal Dia. | 2.6776-2.6786 | 2.4988-2.4998 (No. 2, 3, 4, 5: 2.4985-2.4995) |
| Main Brg Oil Clearance | 0.0016-0.0039 (No. 1: 0.0008-0.0031″) | 0.0005-0.0021 |
| Shaft End-play | 0.010-0.070 | 0.0035-0.0135 |
| Thrust on No. | 3 | 3 |
CONNECTING ROD SPECS
| Engine type | V8-273cc(4.5L) | V8-307cc(5.0L) |
| Journal Dia. | 2.052-2.054 | 2.1238-2.1248 |
| Oil Clearance | 0.0005-0.0028 | 0.0004-0.0033 |
| Side Clearance | 0.008-0.020 | 0.006-0.020 |
PISTON AND RING SPECS
| Engine type | V8-273cc(4.5L) | V8-307cc(5.0L) |
| Piston-Bore Clearance | 0.0008 | 0.00075-0.00175 |
| Ring Side Clearance: Top Compression | 0.0016-0.0037 | 0.0018-0.0038 |
| Ring Side Clearance: Bottom Compression | 0.0016-0.0037 | 0.0018-0.0038 |
| Ring Side Clearance: Oil Control | None (side sealing) | 0.001-0.005 |
| Ring Gap: Top Compression | 0.015-0.024 | 0.009-0.019 |
| Ring Gap: Bottom Compression | 0.015-0.024 | 0.009-0.019 |
| Ring Gap: Oil Control | 0.010-0.050 | 0.015-0.055 |
VALVE SPECS
| Engine type | V8-273cc(4.5L) | V8-307cc(5.0L) |
| Seat Angle | 45° | 45°(exhaust 31°) |
| Face Angle | 44° | 44°(exhaust 30°) |
| Spring Test Pressure | intake: [email protected]; exhaust: [email protected] | 187 lb @ 1.27 |
| Stem-to-Guide Clearance: Intake | 0.0010-0.0030 | 0.0010-0.0027 |
| Stem-to-Guide Clearance: Exhaust | 0.0010-0.0030 | 0.0015-0.0032 |
| Stem Diameter: Intake | 0.3410-0.3420 | 0.3425-0.3437 |
| Stem Diameter: Exhaust | 0.3410-0.3420 | 0.3420-0.3427 |
TORQUE SPECS
| Engine type | V8-273cc(4.1L) | V8-307cc(5.0L) |
| Cyl. Head Bolts | 90 ft.lb | 130 ft. lb |
| Rod Brg Bolts | 22 ft.lb | 18 ft. lb (Plus rotate 70°) |
| Main Brg Bolts | 85 ft.lb | 80 ft. lb (Rear main: 120) |
| Crankshaft Damper or Pulley Bolt | Press fit | 200-310 ft. lb |
| Flywheel to Crankshaft Bolts | 70 ft.lb | 60 ft. lb |
| Intake Manifold | 40 ft. lb | |
| Exhaust Manifold | 18 ft.lb | 25 ft. lb |
CARBURETOR SPECS
| Carb ID | 17086008 (E4MC) | 17086008 (E4MC) |
| Float Level | 11⁄32 in. | 14/32 in |
| Air Valve Spring | 1/2 turn | 1/2 turn |
| Pump Rod | fixed | fixed |
| Primary Vacuum Break | 0.142 in/25° | 0.142 in/25° |
| Secondary Vacuum Break | 0.278 in/43° | 0.278 in/43° |
| Choke Rod | 14° | 14° |
| Choke Unloader | 0.220 in/35° | 0.220 in/35° |
| Fast Idle Speed | See underhood decal | |
WHEEL ALIGNMENT SPECS
| Feature | Eldorado | Full size | Seville |
| Caster Range | 1-5/16°P to 3-5/16°P | 2°P-4°P | 1½°P-3½°P |
| Caster Pref. | 2-5/16°P | 3°P | 2½°P |
| Camber LH wheel Range | 13/16°N to 13/16°P | ½°N to ½°P | ½°N to ½°P |
| Camber LH wheel Pref. | 0° | 0° | 0° |
| Camber RH wheel Range | 13/16°N to 13/16°P | ½°N to ½°P | ½°N to ½°P |
| Camber RH wheel Pref. | 0° | 0° | 0° |
| Toe-In | 3/32 in to 3/32 out | 3/32 in to 3/32 out | 3/32 in to 3/32 out |
| Steering Axis Inclination | — | 10-19/32 | — |
HISTORICAL NOTES
1989 Cadillac Notes
- Cadillac had 1,605 dealers at the start of the 1989 calendar year.
- Its general manager was John D. Grettenberger.
- Compared to the 1988 model year, Cadillac increased its market share from 2.52 percent to 2.70 percent.
- Sales increased slightly from 266,548 to 266,899.
1989 Automotive Notes
- GM news:
- Ford news:
- Chrysler news:
- AMC news:
- Other makes news:
- Top American Automobile Corporations for 1989
1. General Motors3……………..,394,033
2. Ford1,745…………….,819
3. Chrysler…………973,678
4. Others………….350
- Top model year production for 1989
Chevrolet1…………..,275,498
Ford1,…………………234,954
Pontiac…………………801,600
Oldsmobile………………533,818
Buick………………….506,787
Skyhawk…………….23,366
Skylark……………..61,540
Century……………155,532
Reatta………………..7,009
Regal…………………88,757
LeSabre………….149,572
Estate Wagon………………..,7531
LeSabre Wagon………………….2,971
Electra Wagon……………….4,560
Electra………………..83,566
Riviera……………………..21,189
Dodge…………………….481,139
Mercury…………………..294,899
Cadillac……………………….276,330
Allante…………………….3,296
Seville……………..22,909
DeVille………………..145,987
Fleetwood……………….30,749
Eldorado……………………30,925
Fleetwood Brougham……………..40,264
Plymouth………………..268,442
Chrysler…………….224,097
Lincoln………………..215,966
Avanti……………….350
Acura………………………..142,061
