Cadillac Moels & History 1984
This was more a year of waiting than one of major changes. All Cadillac engines were now fuel injected. All but Cimarron and Fleetwood limousines carried the HT-4100 cu. in. (4.1 liter V-8 with aluminum alloy block and digital fuel injection. This year, that 249 cu. in. engine gained a new exhaust system and catalytic converter, plus revised calibration settings, to meet high-altitude emissions standards.
New features on DeVille, Fleetwood Brougham and limos included a goldtone horizontally-winged Cadillac crest ornament on front parking and turn signal lenses; new car-colored bodyside moldings; new goldtone vertically-winged Cadillac crest and goldtone accents on taillamp lenses; and new standard electronic level control. Diesel engine identification plaques were now on the left rear of the decklid. Faster-warming glow plugs went into the optional 5.7 liter diesel V-8, for improved cold-startups. A modified optional theft-deterrent system could detect any object on the driver’s seat that weighed 40 pounds or more.
V.I.N. DATA
- All Cadillacs again had a 17-symbol Vehicle Identification Number (VIN), stamped on a metal tag attached to the upper left surface of the cowl, visible through the windshield.
- Some of the coding changed this year.
- The first character is a “1” to indicate the manufacturing country (U.S.A.)
- Next is a “G” for General Motors
- The third character is a “6” for Cadillac Division.
- The next character indicates restraint system: “A” manual; “B” automatic.
- Symbol five denotes car line and series:
- “S” Seville;
- “M” DeVille;
- “W” Fleetwood Brougham;
- “F” Fleetwood limousine;
- “L” Eldorado.
- Characters six and seven indicate body type:
- “47” 2-dr. coupe;
- “69” 4-dr. sedan;
- “23” eight-passenger limousine;
- “33” formal limousine with center partition;
- “57” Eldorado coupe;
- “67” 2-dr. convertible coupe.
- Next comes the engine code:
- “P” L4-121 TBI;
- “8” V8-250 FI;
- “N” V8-350 diesel;
- “9” V8-6-4 368 FI.
- The ninth character is a check digit.
- Character ten indicates model year (“E” 1984).
- Character eleven denotes the assembly plant.
- The last six characters is a six-digit production sequence number.
- As before, engines carried an identifying number and bodies held a number plate.
SPECIFICATIONS
FLUID CAPACITIES
| Engine | V8 250cc (4.1L) | V8 350cc (5.7L) Diesel | V8 368cc (6.0L) |
| Crankcase | 4 qt | 6 qt | 4 qt |
| Crankcase with new filter | 5 qt | 7 | 5 qt |
| AutomaticTransmission after draining | 10 pt | 10 pt | 8 pt |
| Drive Axle | 4.25 or 3.25 pt | 4.25 or 3.25 pt | 4.25 pt |
| Fuel tank | 24 or 21 gal(US) | 26 or 21 gal(US) | 25 gal(US) |
| Cooling with heater | 11 qt | 23 or 18 qt | 21.4 qt |
| Cooling with A/C | 11 qt | 23 qt | 21.4 qt |
| Heavy duty Cooling | NA | NA | NA |
GASOLINE ENGINE TUNE-UP SPECS
| Engine V.I.N Code | 8 | 6 | 9 |
| Engine type | V8-250cc (4.1L) | V8-368cc(6.0L) | V8-368cc(6.0L) |
| Fuel delivery | DFI | 4 bbl | DFI |
| Manufacturer | Cadillac | Cadillac | Cadillac |
| Original Spark plug | R43NTS6 | R45NSX | R45NAX |
| Gap | 0.060 in. | 0.060 in | 0.060 in |
| Distributor | Electronic | Electronic | Electronic |
| Ignition timing (BTDC) | See underhood sticker | 18° | See underhood sticker |
| Intake valve opens (BTDC) | 37 | 11 | 11 |
| Fuel pump pressure | 12 – 14 | 5½ to 6½ psi | 12 – 14 min. |
| Idle speed | See underhood sticker | 575 rpm | See underhood sticker |
ALTERNATOR AND REGULATOR SPECS
| Part # | 1102921 | 1101040 | 1101046 | 1101050 | 1101091 |
| Field current @ 12 V | 4 – 4.5 | 4 – 4.5 | 4 – 4.5 | 4 – 4.5 | 4 – 4.5 |
| Output | 63 amps | 70 amps | 80 amps | 100 amps | 100 amps |
| Regulator | Solid state | Solid state | Solid state | Solid state | Solid state |
| Volts @ 75° | 13.8 – 14.8 | 13.8 – 14.8 | 13.8 – 14.8 | 13.8 – 14.8 | 13.8 – 14.8 |
BATTERY AND STARTER SPECS
| Engine | V8-250cc (4.1L) | V8-368cc (6.0L) | V8-350cc (5.7L)Diesel |
| Battery Ampere Hour Capacity | 540 amps cold cranking power @ 0°F | ||
| Battery Volts | 12 | 12 | 12 |
| Battery Terminal Grounded | Neg. | Neg. | Neg. |
| Starter, Lock Test, Amps | Not Recommended | ||
| Starter, Lock Test, Volts | |||
| Starter, Lock Test, Torque | |||
| Starter, No-Lead Test, Amps | 65 – 95 | 65 – 95 | 40 – 140 |
| Starter, No-Lead Test, Volts | 9 | 9 | 9 |
| Starter, No-Lead Test, RPM | 7000 – 10500 | 7000 – 10500 | 8000 – 13000 |
| Starter, Brush Spring Tension | 35 oz. min. | 35 oz. min. | 35 oz. min. |
GENERAL ENGINE SPECS
| Engine V.I.N Code | 8 | N | 6 | 9 |
| Engine type | V8-250cc(4.1L) | V8-350cc(5.7L) Diesel | V8-368cc(6.0L) | V8-368cc(6.0L) |
| Manufacturer | Cadillac | Oldsmobile | Cadillac | Cadillac |
| Fuel delivery | DFI | Diesel | 4 bbl | DFI |
| Horsepower | [email protected] | [email protected] | [email protected] | [email protected] |
| Torque | [email protected] | [email protected] | [email protected] | [email protected] |
| Bore x Stoke | 3.465 x 3.307 | 4.057 x 3.385 | 3.800 x 4.060 | 3.800 x 4.060 |
| Compression Ratio | 8.5:1 (9:1 with Swirl Cylinder Heads) | 22.7:1 | 8.20:1 | 8.20:1 |
| Oil pressure | 30 psi | 40 psi | 35 psi | 35 psi |
CRANKSHAFT SPECS
| Engine type | V8-250cc(4.1L) | V8-350cc(5.7L) Diesel | V8-368cc(6.0L) | V8-307cc(5.0L) |
| Main Brg Journal Dia. | 2.640 | 2.9993 – 3.0003 | 3.250 | 2.4988 – 2.4998 (No. 2, 3, 4, 5: 2.4985 – 2.4995) |
| Main Brg Oil Clearance | 0.0004 – 0.0027 | 0.0005 – 0.0021 (No. 5: 0.0015 – 0.0031) | 0.0001 – 0.0026 | 0.0005 – 0.0021 (No. 5: 0.0015 – 0.0031) |
| Shaft End-play | 0.001 – 0.007 | 0.004 – 0.014 | 0.002 – 0.012 | 0.0035 – 0.0135 |
| Thrust on No. | 3 | 3 | 3 | 3 |
CONNECTING ROD SPECS
| Engine type | V8-250cc(4.1L) | V8-350cc(5.7L) Diesel | V8-368cc(6.0L) |
| Journal Dia. | 2.052 – 2.054 | 2.1238 – 2.1248 | 2.5000 |
| Oil Clearance | 0.0005 – 0.0028 | 0.0005 – 0.0026 | 0.0005 – 0.0026 |
| Side Clearance | 0.008 – 0.020 | 0.006 – 0.020 | 0.008 – 0.020 |
PISTON AND RING SPECS
| Engine type | V8-250cc(4.1L) | V8-350cc(5.7L) Diesel | V8-368cc(6.0L) |
| Piston-Bore Clearance | 0.0008 | 0.0035 – 0.0045 | 0.0006 – 0.0014 |
| Ring Side Clearance: Top Compression | 0.0016 – 0.0037 | 0.005 – 0.007 | 0.0017 – 0.0040 |
| Ring Side Clearance: Bottom Compression | 0.0016 – 0.0037 | 0.003 – 0.005 | 0.0017 – 0.0040 |
| Ring Side Clearance: Oil Control | None (side sealing) | 0.001 – 0.005 | None (side sealing) |
| Ring Gap: Top Compression | 0.015 – 0.025 | 0.019 – 0.027 | 0.013 – 0.023 |
| Ring Gap: Bottom Compression | 0.015 – 0.025 | 0.013 – 0.021 | 0.013 – 0.023 |
| Ring Gap: Oil Control | 0.010 – 0.050 | 0.015 – 0.055 | 0.015 – 0.055 |
VALVE SPECS
| Engine type | V8-250cc(4.1L) | V8-350cc(5.7L) Diesel | V8-368cc(6.0L) |
| Seat Angle | 45° | 45°(intake); 31° (exhaust) | 45° |
| Face Angle | 44° | 44°(intake); 30° (exhaust) | 44° |
| Spring Test Pressure | 167 lb @ 1.34″ | 210 lb @ 1.22″ | 160 lb @ 1.50″ |
| Spring Installed Height | 1-43/64″ | 1-43/64″ | 1-15/32″ |
| Stem-to-Guide Clearance: Intake | 0.0010 – 0.0030 | 0.0010 – 0.0027 | 0.0010 – 0.0027 |
| Stem-to-Guide Clearance: Exhaust | 0.0010 – 0.0030 | 0.0015 – 0.0032 | 0.0010 – 0.0027 |
| Stem Diameter: Intake | 0.3413 – 0.3420 | 0.3425 – 0.3432 | 0.3417 |
| Stem Diameter: Exhaust | 0.3411 – 0.3418 | 0.3420 – 0.3427 | 0.3417 |
TORQUE SPECS
| Engine type | V8-250cc(4.1L) | V8-350cc(5.7L) Diesel | V8-368cc(6.0L) |
| Cyl. Head Bolts | 90 ft. lb | 130 ft. lb | 95 ft. lb |
| Rod Brg Bolts | 20 ft. lb | 42 ft. lb | 40 ft. lb |
| Main Brg Bolts | 85 ft. lb | 120 ft. lb | 90 ft. lb |
| Crankshaft Damper or Pulley Bolt | Press fit | 200 – 310 ft. lb | Press fit |
| Flywheel to Crankshaft Bolts | 20 ft. lb | 60 ft. lb | 75 ft. lb |
| Intake Manifold | 22 ft. lb | 40 ft. lb | 30 ft. lb |
| Exhaust Manifold | 20 ft. lb | 25 ft. lb | long bolts: 35 ft. lb; short bolts: 12 ft. lb |
WHEEL ALIGNMENT SPECS
| Feature | Eldorado | Full size | Seville |
| Caster Range | 2°P – 3°P | 2½°P – 3½°P | 2°P – 3°P |
| Caster Pref. | 2½°P | 3°P | 2½°P |
| Camber LH wheel Range | ½°N to ½°P | 3/32°P to 57/64°P | ½°N to ½°P |
| Camber LH wheel Pref. | 0° | ½° | 0° |
| Camber RH wheel Range | ½°N to ½°P | 3/32°P to 57/64°P | ½°N to ½°P |
| Camber RH wheel Pref. | 0° | ½° | 0° |
| Toe-In | 1/8 in to 1/8 out | 1⁄8 in. | 1/8 in to 1/8 out |
| Steering Axis Inclination | 11° | 10-19/32° | 11° |
HISTORICAL NOTES
1984 Cadillac Notes
- Introduced: September 22, 1983.
- Robert D. Burger was general manager until January
- John O. Grettenberger became general manager in January
- Robert J. Templin was chief engineer for part of the year
- Edward H. Mertz became chief engineer
- Wayne Kady was chief designer (Cadillac Studio)
- L. B. Pryor was general sales manager
- Model year production: 300.300 (not including early ’85 DeVille/Fleetwoods).
- The total includes 2,465 diesels.
- Calendar year production: 328,534.
- Calendar year sales by U.S. dealers: 320,017 for a 4.0 percent market share.
- Model year sales by U.S. dealers: 327,587 (including 46,356 early ’85 front-drives).
- Sales rose 13 percent for the model year, but Cadillac’s market share declined.
- (Figures are a bit distorted because both front-drive and rear-drive DeVille/Fleetwood models were sold at the same time.)
- On the other hand, all the GM divisions experienced a drop in market share.
- Rising demand, though, kept plants working overtime during 1984.
- Cimarron continued as Cadillac’s weakest seller, largely because it offered little more than the related J-car Chevrolet Cavalier gave for far fewer dollars.
- Best performers in terms of increased sales were the big DeVille and Fleetwood Brougham.
- Research had shown, however, that over three-fourths of Cimarron buyers had never bought a Cadillac before; and that many of them had previously owned an import.
- Late in 1983, a modern new plant at Orion Township in Michigan had begun production of the new front-drive DeVille, to be introduced for 1985 after early production delays.
- Also late in 1983, Cadillac became part of the Buick-Cadillac-Oldsmobile group.
- In January 1984, John O. Grettenberger became Cadillac’s new chief.
- Cadillac had offered the last American convertible in 1976, but wasn’t the first to return with a ragtop in the ’80s.
- Already on the market were Buick Riviera, Chevrolet Cavalier, Pontiac Sunbird, Chrysler LeBaron, Dodge 600, and Ford Mustang.
- Cadillac’s version was, of course, the most costly of the lot for ’84.
- The convertible was actually a conversion done by ASC Corporation in Lansing, Michigan, after the car was assembled in New Jersey.
- The work included reinforcing inner rockers, radiator support cross rods, and many body braces.
- Front and rear anti-roll bars and tougher suspension components were added along with the vinyl convertible top.
- All told, the convertible weighed 179 pounds more than the coupe from which it evolved.
- Cadillac production figures
Cimarron21,898 (increased 2,604)
Fleetwood/de Ville series191,510 (increased 16,836)
Eldorado77,806 (increased 10,390)
Seville39,997 (increased 9,567)
Series 751,839 (increased 839)
1984 Automotive Notes
- GM news:
- Ford news:
- Chrysler news:
- AMC news:
- Other makes news:
- Top American Automobile Corporations for 1984
1. General Motors4…………..,682,477
2. Ford1,………………813,523
3. Chrysler1………………….,176,144
4. AMC208…………..,624
5. Others287
- Top model year production for 1984
Chevrolet1,………………..655,151
Ford1,180,……………………….708
Oldsmobile1,……………………..144,225
Buick987………………….,980
Skyhawk145,………………393
Skylark111……………………..211
Century223………………..,335
Regal224……………………,754
LeSabre154,……………………712
Electra74,………………..189
Riviera57,……………863
Pontiac594,…………………..821
Mercury475,……………………381
Dodge442,…………………527
Chrysler375,………………………853
Plymouth357…………………………764
Cadillac300,……………………………300
Cimarron21,………………………898
Seville39,…………………………997
DeVille114,…………………….610
Eldorado77,……………………………806
Fleetwood Brougham44,………………150
Fleetwood Limousine1,……………..839
AMC208,…………………………624
Encore87,……………………………….609
Alliance91,…………………………….664
Eagle 3016,……………………….190
Lincoln157,……………………….434
Avanti287