1985 · Chevrolet · United States

1985 Chevrolet Monte Carlo SS: the overdrive year

The SS gains a four-speed overdrive automatic and 3.73 axle; 35,484 built.

United States · researched through 2026-09-22

Weathered Silver Metallic 1985 Chevrolet Monte Carlo SS parked at a curb, front three-quarter, with red pinstripes, Monte Carlo SS door lettering and a faded hood
1985 Chevrolet Monte Carlo SS in Silver Metallic, unrestored Photo: Cutlass, CC0, via Wikimedia Commons

This record's own dek states that the SS gained a four-speed overdrive automatic and a 3.73 axle for 1985, with 35,484 built out of 119,057 Monte Carlos overall, close to thirty percent of that year's whole Monte Carlo output. Wikipedia's own table, citing the Standard Catalog of American Cars 1976-1999, and MonteCarloSS.com's own FAQ give the identical 35,484 figure, though this record's own production note states that the independence of those two lineages from one another is not established.1,2

All 1983-1986 SS coupes were built at a single Arlington, Texas plant, per the MonteCarloSS.com FAQ, a detail this record carries as applying across the whole four-year span rather than 1985 specifically. Chevrolet's own price schedule, published December 26, 1984, lists the Monte Carlo SS sport coupe, order code 1GZ37 Z65, at $11,608 MSRP for cars built from January 2, 1985, against $9,731 for the plain V6 sport coupe, roughly a 19 percent premium for the SS specifically.2

The 1985 MVMA specifications form makes the 200-4R four-speed overdrive automatic, paired with a 3.73:1 axle, the SS's own base drivetrain for the year, a configuration this record's own dek and key facts both describe directly as the year's defining drivetrain change. The form further specifies a 194-millimeter ring gear and an overall top-gear drive ratio of 2.50 for that same combination, both drawn from the same factory document as the engine ratings, with no alternate transmission or axle choice listed anywhere in this record for the 1985 SS.

Both engine entries this record carries for 1985 agree with each other: the MonteCarloSS.com FAQ and the MVMA specifications form both give the L69 305 HO at 180 hp at 4,800 rpm and 225 lb-ft at 3,200 rpm, and this record's own conflicts section carries nothing for the year. The L69 is documented as the SS's only engine, at 9.5:1 compression with dual exhaust, available in all states, with no alternate V8 or six-cylinder option recorded for the SS specifically.2

Four exterior colors are documented for 1985, each tied in the dealer order guide to a specific stripe color: Black with an orange-red stripe, Dark Maroon Metallic with an orange-red stripe, Silver Metallic with a red stripe, and White with a red stripe, a paired color-and-stripe scheme this record's own paint entries carry explicitly rather than listing the body colors alone. Four interior trim codes are recorded as well, cloth bench and bucket-seat options in gray and in maroon, all drawn from the same 1985 dealer order guide as the paint list.

This record's own specifications section carries only the 3.73:1 axle ratio for the year, with no wheelbase, length, weight or other dimension recorded specific to 1985, and its options and performance sections are both empty despite the drivetrain and paint detail already described above. The identification section repeats the same generation-wide SPID paint-code table used across the SS years without asserting which codes specifically applied to 1985, leaving production, price, drivetrain, paint and interior trim as the whole of this record's sourced coverage for the year.2

Fact sheet · 1985 · United States

The numbers

1985 Chevrolet Monte Carlo SS — The SS gains a four-speed overdrive automatic and 3.73 axle; 35,484 built.

Coverage: Partial — researched sections are shown; missing ones are not yet sourced. Researched through 2026-09-22.

Every figure is labeled with how sure we are. Reported means a manufacturer, registry, or reference figure we cite but have not reconciled against factory records ourselves. Disputed means credible sources disagree and both are shown. Rows are separately scoped; don't add them together unless the note says they make up a total.

Key facts

  • SS production 1985: 35,484.1,2
  • GM's December 1984 price schedule lists the Monte Carlo SS sport coupe (1GZ37 Z65) at $11,608.00 MSRP for cars built from January 2, 1985; the 1985 MVMA form makes the 4-speed overdrive automatic (200-4R) with a 3.73 axle the SS base drivetrain behind the 180 net hp L69.

Production

Totals
What was countedCountBasisStatus
Monte Carlo, all models1,1 2-door coupe · not stated 119,057 built, model-year Reported
By body style and series
What was countedCountBasisStatus
Monte Carlo coupe (non-SS)1 Sport Coupe / LS · 2-door coupe · not stated 83,573 built, model-year Reported
By package or option
What was countedCountBasisStatus
Monte Carlo SS1,2 SS · 2-door coupe · 305 V8 · not stated Wikipedia (Standard Catalog lineage) and the MonteCarloSS.com FAQ give the same figure; independence of the two lineages is not shown. 35,484 built, model-year Reported

The coupe, SS and Aerocoupe columns of the cited table sum to its yearly total; the table is shown as published, not recomputed.

Figures are from Wikipedia citing Standard Catalog of American Cars 1976-1999 (3rd ed., Flammang and Kowalke, 1999); the book page was not seen directly.

Prices when new

ModelPriceBasis
Monte Carlo SS sport coupe 1GZ37 Z65, V8 $11,608 manufacturer's suggested retail price; excludes destination, taxes, license, options, 1985-01-02
Monte Carlo sport coupe 1GZ37, V6 (for comparison) $9,731 manufacturer's suggested retail price; excludes destination, taxes, license, options, 1985-01-02

Prices are the nominal dollars of the day, not adjusted for inflation.

Engines

EngineFactory ratingAvailabilityBuilt
5.0L (305) High Output 4-bbl V82 305 cu in · 4-barrel 180 hp @ 4,800, 225 lb-ft @ 3,200 (SAE net) standard on SS Not yet sourced
L69 · 5.0 Liter 4-bbl V8 HO (order code B4V) 305 cu in · 4-barrel 180 hp @ 4,800, 225 lb-ft @ 3,200 (SAE J1349 net) Monte Carlo SS (RPO Z65) base engine, all states; 9.5:1; dual exhaust Not yet sourced

Ratings are the manufacturer's advertised figures under the standard shown (SAE gross before 1972, SAE net after). They are not dyno results, and gross and net ratings can't be compared directly.

Transmissions

TransmissionAvailabilityBuilt
200-4R 4-speed overdrive automatic2 standard Not yet sourced
Automatic 200-4R (4-speed overdrive) Monte Carlo SS base, with 3.73:1 axle (194 mm ring gear); overall top-gear drive ratio 2.50 Not yet sourced

Paint

CodeColorBuilt
19 Black, orange-red stripe Not yet sourced
79 Dark Maroon Metallic, orange-red stripe Not yet sourced
12 Silver Metallic, red stripe Not yet sourced
11 White, red stripe Not yet sourced

Color names are the factory's. We don't show color swatches, because a screen color is no guide for a restoration.

Interiors

CodeTrimBuilt
CQQ1 Cloth bench, gray Not yet sourced
CQQ2 Cloth bucket seats, gray Not yet sourced
CFF1 Cloth bench, maroon Not yet sourced
CFF2 Cloth bucket seats, maroon Not yet sourced

Specifications

MeasureValueApplies to
Rear axle ratio2 3.73 :1 SS

Identification

SS paint codes (generation-wide)
MonteCarloSS.com lists SPID paint codes for SS colors: 11U White 3967; 27U Lt. French Blue Metallic 7686; 19U Lamp Black 0848; 12U Metallic Silver 8535; 79U Burgundy Metallic 8529. Year-by-year availability in its color table could not be read reliably and is not asserted here.2

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Identification

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Same model year

Also in 1985

  • Buick Regal Turbo, Grand National and GNX A carry-over year for the black, fuel-injected Grand National: 2,102 built, inside a T Type count that sources put at 4,169 or 4,204.
  • Buick Riviera Record sales of 65,305 in the last big E-body year; 1,069 T Types and 47 or 49 turbo convertibles depending on the ROA page version.
  • Chevrolet El Camino SS RPO Z15 SS Sport Decor trim on the fifth-generation El Camino; no production count from a verifiable source was found.
  • Ford Thunderbird The Turbo Coupe moved to 15-inch wheels and P225/60VR15 tires, and its output rose.
  • Lincoln Mark VII LSC Last year of the Continental name: the LSC is credited with a high-output 5.0 V8 and four-channel anti-lock brakes, though the engine rating is disputed.
  • Mercury Capri RS and ASC/McLaren 257 ASC McLaren Capri convertibles and 50 Motorsport Pace Cars, per Classic Industries.
  • Mercury Cougar Outside the muscle focus: 117,274 Cougars for 1985 per Wikipedia's table.
  • Oldsmobile Cutlass, 4-4-2 and Hurst/Olds The W42 4-4-2 on the rear-drive Cutlass Supreme, with a 307 V-8 and a four-speed automatic.
  • Pontiac Firebird and Trans Am A restyled Trans Am and the first tuned-port 305: 95,880 Firebirds.
  • Pontiac Grand Prix The 305 4-barrel is listed at 165 hp for this year only.