Dream Car Giveaway


All-new Eldorado and Seville models entered the lineup for 1986, loaded with a diagnostic system and electronic instruments. Anti-lock braking was a new option on Fleetwood and DeVille. All Cadillacs were now front-wheel drive except the big Brougham, which hung on for another year with a 5.0 liter V-8 under the hood.

Luxury touches promoted in the full-line catalog ranged from golden ignition keys all the way to elegant option packages, to deliver "the feeling of uncompromising excellence." In keeping with that promise, diesel engines departed from the Cadillac option list, victims of lack of interest and an unimpressive reliability record.

The HT 4100 V-8 added stainless steel exhaust manifolds. Door locks had new rocker switches. Floor consoles contained an ashtray that opened at a finger's touch. And to keep up with the times, a cellular telephone ("discreetly" positioned in a fold-down armrest) joined the option list. To attract buyers who preferred good handling to a cushy ride, DeVilles could also get a Touring Coupe or Touring Sedan option with stiffer suspension and related extras.

Over 40 body colors were available, including nine Firemist shades and two Pearlmist (black cherry or black emerald) that changed character according to the angle and intensity of sunlight striking the car's surface.


  • 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. Coding changed to reflect the new front-drive models.
  • The first number is a "1" to indicate the manufacturing country (U.S.A.)
  • The second character is a "G" for General Motors
  • The third is a "6" for Cadillac Division
  • Symbol four is the car line (GM body):
    • "J" = Cimarron
    • "K" = Seville
    • "C" = Deville/Fleetwood
    • "D" = Brougham
    • "E" = Eldorado
  • Symbol five indicates series:
    • "G" = Cimarron
    • "S" = Seville
    • "D" = DeVille
    • "B" = Fleetwood
    • "H" = Fleetwood limousine
    • "W" = Fleetwood Brougham (rear drive)
    • "L" = Eldorado
  • Digits six and seven indicate body type:
    • "47" = 2-dr. coupe
    • "69" = 4-dr. sedan
    • "23" = eight passenger limousine
    • "33" = formal limousine
    • "57" = Eldorado coupe
  • Next is the engine code:
    • "P" = L4-121 TBI
    • "W" = V6-173 FI
    • "8" = V8-249 DFI
    • "Y" = V8-307 4Bbl.
  • The next symbol is a check digit.
  • Symbol ten indicates model year ("G" = 1986)
  • Next is a code for assembly plant:
    • "9" = Detroit
    • "E" = Linden, NJ
    • "J" = Janesville, WI.
  • Finally comes a six-digit production sequence number
    • starting with 000001 for Detroit built cars
    • 400001 for Janesville
    • 600001 for Linden (E-body)
    • 800001 for Linden (K-body)
  • An identifying number is also on the engine, and a set of codes on a body number plate.



EngineV8 250cc (4.1L)V8 307cc (5.0L)
Crankcase5 qt4 qt
Crankcase with new filter5 qt5
AutomaticTransmission after draining13 pt10.6 pt
Drive AxleNA3.6 pt
Fuel tank18.0 gal(US)24.5 gal(US)
Cooling with heater12.6 qt15.3 qt
Cooling with A/C12.6 qt15.3 qt
Heavy duty CoolingNANA


Engine V.I.N Code8Y
Engine typeV8-250cc (4.1L)V8-307cc (5.0L)
Fuel deliveryDFI4 bbl
Original Spark plugR42CLTS6FR3LS6
Gap0.060 in.0.060 in.
Ignition timing (BTDC)See underhood stickerSee underhood sticker
Intake valve opens (BTDC)See underhood stickerSee underhood sticker
Fuel pump pressure12-145½-6½
Idle speedSee underhood stickerSee underhood sticker


Part #110549311055721105657
Field current @ 12 V4-4.54-4.54-4.5
Output94 amps94 amps120 amps
RegulatorSolid stateSolid stateSolid state
Volts @ 75°13.8-14.813.8-14.813.8-14.8


EngineV8-250cc (4.1L)V8-307cc (5.0L)
Battery Ampere Hour Capacity540 amps cold cranking power @ 0°F
Battery Volts1212
Battery Terminal GroundedNeg.Neg.
Starter, Lock Test, AmpsNot Recommended
Starter, Lock Test, Volts
Starter, Lock Test, Torque
Starter, No-Lead Test, Amps65-9565-95
Starter, No-Lead Test, Volts99
Starter, No-Lead Test, RPM7000-105007000-10500
Starter, Brush Spring Tension35 oz. min.35 oz. min.


Engine V.I.N Code8Y
Engine typeV8-250cc(4.1L)V8-307cc(5.0L)
Fuel deliveryDFIDiesel
Bore x Stoke3.465 x 3.3073.800 x 3.385
Compression Ratio9.1:17.9:1
Oil pressure30 psi30 psi


Engine typeV8-250cc(4.1L)V8-307cc(5.0L)
Main Brg Journal Dia.2.6402.4988-2.4998 (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)
Shaft End-play0.001-0.0070.0035-0.0135
Thrust on No.33


Engine typeV8-250cc(4.1L)V8-307cc(5.0L)
Journal Dia.2.052-2.0542.1238-2.1248
Oil Clearance0.0005-0.00280.0004-0.0033
Side Clearance0.008-0.0200.006-0.020


Engine typeV8-250cc(4.1L)V8-307cc(5.0L)
Piston-Bore Clearance0.00080.0008-0.0018
Ring Side Clearance: Top Compression0.0016-0.00370.0020-0.0040
Ring Side Clearance: Bottom Compression0.0016-0.00370.0020-0.0040
Ring Side Clearance: Oil ControlNone (side sealing)0.0010-0.0050
Ring Gap: Top Compression0.015-0.0250.009-0.019 (with TRW rings: 0.010-0.025)
Ring Gap: Bottom Compression0.015-0.0250.009-0.019 (with TRW rings: 0.010-0.025)
Ring Gap: Oil Control0.010-0.0500.015-0.055


Engine typeV8-250cc(4.1L)V8-307cc(5.0L)
Seat Angle45°45° (exhaust: 60°)
Face Angle44°46° (exhaust: 59°)
Spring Test Pressure167 lb @ 1.34"187 lb @ 1.27"
Spring Installed Height1-43/64"1-47/64"
Stem-to-Guide Clearance: Intake0.0010-0.00300.0010-0.0027
Stem-to-Guide Clearance: Exhaust0.0010-0.00300.0015-0.0032
Stem Diameter: Intake0.3413-0.34200.3425-0.3432
Stem Diameter: Exhaust0.3411-0.34180.3420-0.3427


Engine typeV8-250cc(4.1L)V8-307cc(5.0L)
Cyl. Head Bolts90 ft.lb125 ft. lb
Rod Brg Bolts22 ft.lb42 ft. lb
Main Brg Bolts85 ft.lb80 ft. lb (Rear main: 120)
Crankshaft Damper or Pulley BoltPress fit200-310 ft. lb
Flywheel to Crankshaft Bolts37 ft.lb60 ft. lb
Intake Manifold 40 ft. lb
Exhaust Manifold18 ft.lb25 ft. lb


Carb ID17086008 (E4MC)17086008 (E4MC)
Float Level1132 in.14/32 in
Air Valve Spring1/2 turn1/2 turn
Pump Rodfixedfixed
Primary Vacuum Break0.142 in/25°0.142 in/25°
Secondary Vacuum Break0.278 in/43°0.278 in/43°
Choke Rod14°14°
Choke Unloader0.220 in/35°0.220 in/35°
Fast Idle SpeedSee underhood decal


Feature Eldorado Full size Seville
Caster Range 1½°P-3½°P 3½°P-4½°P 1½°P-3½°P
Caster Pref. 2½°P 4°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 1/5 in to 1/5 out 18 in. 1/5 in to 1/5 out
Steering Axis Inclination11° 10-19/32° 11°


1986 Cadillac Notes

  • Introduced: September 26, 1985 except Eldorado/Seville, November 14, 1985; Fleetwood Brougham, February 13. 1986
  • John O. Grettenberger was general manager
  • Warren D. Hirschfield was chief engineer
  • Wayne Kady was chief designer (Cadillac Studio) until December
  • Richard Ruzzin became chief designer (Cadillac Studio) in December
  • L. B. Pryor was general sales manager until August
  • Peter R. Gerosa became general sales manager in August
  • Model year production: 281,296, including 3,628 with four-cylinder engine and 20,906 with V-6, for a 3.6 percent share of the industry total
  • Calendar year production: 319,031
  • Calendar year sales by U.S. dealers: 304,657
  • Model year sales by U.S. dealers: 300,053 for a 3.8 percent market share.
  • Cadillac sales dropped a bit for the second year in a row, barely edging over 300,000, but that was enough to retain dominance among makers of luxury cars
  • E-body Eldorado production began at the new Hamtramck, Michigan plant in late 1985, but delays kept output below peak levels
  • As a result, Eldorado and Seville sales dropped by half
  • The rear-drive Fleetwood Brougham enjoyed a comeback of sorts, due to low gasoline prices and its upgraded V-8 engine
  • Front-drive DeVilles and Fleetwoods also gained in sales for the second year
  • Cimarron rose as well, but not by much
  • Cadillac clung to hopes that Cimarron would gain strength against new imports, such as Acura Legend, despite complaints that it was little more than a fancy Cavalier
  • At the upper end of the scale, the future held a new ultra-luxurious two-seater Allante, due out for 1987
  • Cadillac production figures
Cimarron24,534 (increased 4,644)
Fleetwood/de Ville series215,709 (decreased 15,997)
Eldorado21,342 (decreased 55,059)
Seville19,098 (decreased 20,657)
Series 751,000 (increased 595)