Dream Car Giveaway


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.


  • 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.



EngineV8 250cc (4.1L)V8 350cc (5.7L) DieselV8 368cc (6.0L)
Crankcase4 qt6 qt4 qt
Crankcase with new filter5 qt75 qt
AutomaticTransmission after draining10 pt10 pt8 pt
Drive Axle4.25 or 3.25 pt4.25 or 3.25 pt4.25 pt
Fuel tank24 or 21 gal(US)26 or 21 gal(US)25 gal(US)
Cooling with heater11 qt23 or 18 qt21.4 qt
Cooling with A/C11 qt23 qt21.4 qt
Heavy duty CoolingNANANA


Engine V.I.N Code869
Engine typeV8-250cc (4.1L)V8-368cc(6.0L)V8-368cc(6.0L)
Fuel deliveryDFI4 bblDFI
Original Spark plugR43NTS6R45NSXR45NAX
Gap0.060 in.0.060 in0.060 in
Ignition timing (BTDC)See underhood sticker18°See underhood sticker
Intake valve opens (BTDC)371111
Fuel pump pressure12 - 145½ to 6½ psi12 - 14 min.
Idle speedSee underhood sticker575 rpmSee underhood sticker


Part #11029211101040110104611010501101091
Field current @ 12 V4 - 4.54 - 4.54 - 4.54 - 4.54 - 4.5
Output63 amps70 amps80 amps100 amps100 amps
RegulatorSolid stateSolid stateSolid stateSolid stateSolid state
Volts @ 75°13.8 - 14.813.8 - 14.813.8 - 14.813.8 - 14.813.8 - 14.8


EngineV8-250cc (4.1L)V8-368cc (6.0L)V8-350cc (5.7L)Diesel
Battery Ampere Hour Capacity540 amps cold cranking power @ 0°F
Battery Volts121212
Battery Terminal GroundedNeg.Neg.Neg.
Starter, Lock Test, AmpsNot Recommended
Starter, Lock Test, Volts
Starter, Lock Test, Torque
Starter, No-Lead Test, Amps65 - 9565 - 9540 - 140
Starter, No-Lead Test, Volts999
Starter, No-Lead Test, RPM7000 - 105007000 - 105008000 - 13000
Starter, Brush Spring Tension35 oz. min.35 oz. min.35 oz. min.


Engine V.I.N Code8N69
Engine typeV8-250cc(4.1L)V8-350cc(5.7L) DieselV8-368cc(6.0L)V8-368cc(6.0L)
Fuel deliveryDFIDiesel4 bblDFI
Bore x Stoke3.465 x 3.3074.057 x 3.3853.800 x 4.0603.800 x 4.060
Compression Ratio8.5:1 (9:1 with Swirl Cylinder Heads)22.7:18.20:18.20:1
Oil pressure30 psi40 psi35 psi35 psi


Engine typeV8-250cc(4.1L)V8-350cc(5.7L) DieselV8-368cc(6.0L)V8-307cc(5.0L)
Main Brg Journal Dia.2.6402.9993 - 3.00033.2502.4988 - 2.4998 (No. 2, 3, 4, 5: 2.4985 - 2.4995)
Main Brg Oil Clearance0.0004 - 0.00270.0005 - 0.0021 (No. 5: 0.0015 - 0.0031)0.0001 - 0.00260.0005 - 0.0021 (No. 5: 0.0015 - 0.0031)
Shaft End-play0.001 - 0.0070.004 - 0.0140.002 - 0.0120.0035 - 0.0135
Thrust on No.3333


Engine typeV8-250cc(4.1L)V8-350cc(5.7L) DieselV8-368cc(6.0L)
Journal Dia.2.052 - 2.0542.1238 - 2.12482.5000
Oil Clearance0.0005 - 0.00280.0005 - 0.00260.0005 - 0.0026
Side Clearance0.008 - 0.0200.006 - 0.0200.008 - 0.020


Engine typeV8-250cc(4.1L)V8-350cc(5.7L) DieselV8-368cc(6.0L)
Piston-Bore Clearance0.00080.0035 - 0.00450.0006 - 0.0014
Ring Side Clearance: Top Compression0.0016 - 0.00370.005 - 0.0070.0017 - 0.0040
Ring Side Clearance: Bottom Compression0.0016 - 0.00370.003 - 0.0050.0017 - 0.0040
Ring Side Clearance: Oil ControlNone (side sealing)0.001 - 0.005None (side sealing)
Ring Gap: Top Compression0.015 - 0.0250.019 - 0.0270.013 - 0.023
Ring Gap: Bottom Compression0.015 - 0.0250.013 - 0.0210.013 - 0.023
Ring Gap: Oil Control0.010 - 0.0500.015 - 0.0550.015 - 0.055


Engine typeV8-250cc(4.1L)V8-350cc(5.7L) DieselV8-368cc(6.0L)
Seat Angle45°45°(intake); 31° (exhaust)45°
Face Angle44°44°(intake); 30° (exhaust)44°
Spring Test Pressure167 lb @ 1.34"210 lb @ 1.22"160 lb @ 1.50"
Spring Installed Height1-43/64"1-43/64"1-15/32"
Stem-to-Guide Clearance: Intake0.0010 - 0.00300.0010 - 0.00270.0010 - 0.0027
Stem-to-Guide Clearance: Exhaust0.0010 - 0.00300.0015 - 0.00320.0010 - 0.0027
Stem Diameter: Intake0.3413 - 0.34200.3425 - 0.34320.3417
Stem Diameter: Exhaust0.3411 - 0.34180.3420 - 0.34270.3417


Engine typeV8-250cc(4.1L)V8-350cc(5.7L) DieselV8-368cc(6.0L)
Cyl. Head Bolts90 ft. lb130 ft. lb95 ft. lb
Rod Brg Bolts20 ft. lb42 ft. lb40 ft. lb
Main Brg Bolts85 ft. lb120 ft. lb90 ft. lb
Crankshaft Damper or Pulley BoltPress fit200 - 310 ft. lbPress fit
Flywheel to Crankshaft Bolts20 ft. lb60 ft. lb75 ft. lb
Intake Manifold22 ft. lb40 ft. lb30 ft. lb
Exhaust Manifold20 ft. lb25 ft. lblong bolts: 35 ft. lb; short bolts: 12 ft. lb


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. ½°
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. ½°
Toe-In 1/8 in to 1/8 out 18 in.1/8 in to 1/8 out
Steering Axis Inclination11° 10-19/32° 11°


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)