1971 · Chevrolet · United States
1971 Monte Carlo SS 454: the last year
The last SS 454 year: RPO Z20 on 1,919 of 128,600 Monte Carlos.
United States · researched through 2026-09-22
This record's own dek describes 1971 as the last SS 454 year, with RPO Z20 installed on 1,919 of 128,600 Monte Carlos for the model year. ChevelleStuff.net's own reference table splits that 128,600-car total into 112,597 built domestically and 16,003 imported from Canada, with the Z20 package priced at $484.50 on top of the base Monte Carlo 13857 sport coupe's $3,316 factory price, a roughly 15 percent premium over the plain coupe for the SS 454 hardware.1
This record's own production notes flag an internal inconsistency the source itself carries rather than papering over: the same reference site's last-VIN-per-plant totals give 540,176 for the entire Chevelle and Monte Carlo line combined, a figure that does not match its own series-by-series production table, and this record does not attempt to reconcile the two. The same notes state that the source's paint-color counts cover the whole Chevelle line rather than the Monte Carlo specifically, so this record's own paint list carries color names and codes without adopting those line-wide counts as Monte Carlo figures.1
Four engines are documented for the year, all rated in both SAE gross and SAE net terms: the standard 350 two-barrel at 245 gross and 165 net hp, an optional 350 four-barrel at 270 gross and 175 net hp, an optional 402 four-barrel at 300 gross and 260 net hp, and the LS5 454 four-barrel, standard specifically with the Z20 SS package, at 365 gross and 285 net hp. A heavy-duty close-ratio four-speed manual, coded M22, was available with the LS5 alone, though this record's own note states that the option's 3,035-unit install count is a line-wide Chevelle-and-Monte-Carlo figure rather than one restated specifically for the Monte Carlo.1
Chevrolet's own 1971 Monte Carlo information kit ties the Z20 SS package directly to a specific equipment list: the 454 paired with Turbo Hydra-matic and a 3.31 axle only, special front and rear springs and heavier shocks, an 8.875-inch ring gear, dual 2.25-inch exhaust, a larger radiator, a heavier battery, 15x7 Rally wheels, automatic level control, a higher-performance starter, a deep-cover fuel pump with vapor return, and heavier front plus added rear stabilizer bars. This record cites both the enthusiast reference and the factory information kit for the package's price and equipment respectively, treating the two as complementary rather than competing accounts of the same option.
This record documents fifteen exterior colors marked as available on the Monte Carlo and seven interior trim codes, from Black Rapallo cloth to Dark Jade Rapallo cloth, though its own specifications and performance sections are both empty for the year despite the depth of powertrain and equipment detail already described above; no wheelbase, overall length, curb weight, or measured acceleration figure was found in an accessible source specific to the 1971 Monte Carlo SS. This record's identification section notes only that style number 13857 identifies the Monte Carlo two-door coupe body, with no further body-plate or VIN-decoding detail found in an accessible source; no conflict is logged for the year, leaving the internal production-total mismatch already described above as this record's only noted inconsistency for 1971.1
Fact sheet · 1971 · United States
The numbers
1971 Chevrolet Monte Carlo SS 454 — The last SS 454 year: RPO Z20 on 1,919 of 128,600 Monte Carlos.
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
- RPO Z20 SS454: 1,919 installed at $484.50; Wikipedia gives the same 1,919 of 128,600.1,2
- Base price of the Monte Carlo 13857 sport coupe: $3,316.00.1
- Chevrolet's 1971 Monte Carlo power-team page ties the 365-hp (285 SAE net) 454 to Monte Carlo SS equipment (RPO Z20) and lists it with Turbo Hydra-matic and a 3.31 axle only, adding automatic level control, 15x7 Rally wheels, dual exhaust and front and rear stabilizers.
Production
| What was counted | Count | Basis | Status |
|---|---|---|---|
| Monte Carlo 2-door coupe, style 13857, all sources1,2 2-door sport coupe · US and Canada | 128,600 | built, model-year | Reported |
| What was counted | Count | Basis | Status |
|---|---|---|---|
| Monte Carlo 13857, domestic1 2-door sport coupe · US-built | 112,597 | built, model-year | Reported |
| Monte Carlo 13857, imported (Canadian-built)1 2-door sport coupe · Canada-built Source column "Imported". | 16,003 | built, model-year | Reported |
| What was counted | Count | Basis | Status |
|---|---|---|---|
| RPO Z20 SS4541,1 SS 454 · 2-door sport coupe · LS5 454 · US and Canada | 1,919 | built, model-year | Reported |
The domestic and imported rows partition the 128,600 total per the source table.
The source notes that last-VIN-per-plant totals (540,176 for the whole Chevelle/Monte Carlo line) do not match its series table.
Paint codes are those the reference marks as available on the Monte Carlo; its paint counts cover the whole Chevelle line and are not shown here as Monte Carlo counts.
Prices when new
| Model | Price | Basis |
|---|---|---|
| Base price, Monte Carlo 138571 | $3,316 | manufacturer suggested retail, 1971 |
| RPO Z20 SS454 option1 | $484.50 | retail option price, 1971 |
Prices are the nominal dollars of the day, not adjusted for inflation.
Engines
| Engine | Factory rating | Availability | Built |
|---|---|---|---|
| LS5 · 454 V8 (Z20)1 454 cu in · 4-barrel | 365 hp @ 4,800, 465 lb-ft @ 3,200 (SAE gross); 285 hp @ 4,000, 390 lb-ft @ 3,200 (SAE net) | standard with Z20 | Not yet sourced |
| L65 · 350 V8 2-bbl1 350 cu in · 2-barrel | 245 hp @ 4,800, 350 lb-ft @ 2,800 (SAE gross); 165 hp @ 4,000, 280 lb-ft @ 2,400 (SAE net) | offered | Not yet sourced |
| L48 · 350 V8 4-bbl1,1 350 cu in · 4-barrel | 270 hp @ 4,800, 360 lb-ft @ 3,200 (SAE gross); 175 hp @ 4,000, 290 lb-ft @ 2,400 (SAE net) | optional (13857 in applicability) | Not yet sourced |
| LS3 · 402 V8 4-bbl1,1 402 cu in · 4-barrel | 300 hp @ 4,800, 400 lb-ft @ 3,200 (SAE gross); 260 hp @ 4,400, 345 lb-ft @ 3,200 (SAE net) | optional (13857 in applicability) | 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
| Transmission | Availability | Built |
|---|---|---|
| M22 · Heavy-duty close-ratio 4-speed1 | LS5 engine only (Chevelle/Monte Carlo line) | Not yet sourced |
Options and packages
| Code | Option | Price | Installed |
|---|---|---|---|
Z20RPO |
SS454, Monte Carlo1 | $484.50 | 1,9191 Reported |
Z20RPO |
Monte Carlo SS equipment: 365-hp (285 SAE net) Turbo-Jet 454 V8 with Turbo Hydra-matic only and 3.31 axle; special front and rear springs, heavier shocks, 8.875-in ring gear, dual 2-1/4-in exhaust, larger radiator, heavier battery, 15x7 Rally wheels, automatic level control, higher-performance starter, deep-cover fuel pump and vapor return, heavier front and added rear stabilizers | — | Not yet sourced |
Paint
| Code | Color | Built |
|---|---|---|
11 (904) |
Antique White1 | Not yet sourced |
13 (905) |
Nevada Silver1 | Not yet sourced |
19 (919) |
Tuxedo Black1 | Not yet sourced |
24 (907) |
Ascot Blue1 | Not yet sourced |
26 (976) |
Mulsanne Blue1 | Not yet sourced |
42 (910) |
Cottonwood Green1 | Not yet sourced |
43 (922) |
Lime Green1 | Not yet sourced |
49 (911) |
Antique Green1 | Not yet sourced |
52 (912) |
Sunflower Yellow1 | Not yet sourced |
53 (925) |
Placer Gold1 | Not yet sourced |
61 (919) |
Sandalwood1 | Not yet sourced |
62 (915) |
Burnt Orange1 | Not yet sourced |
67 (916) |
Classic Copper1 | Not yet sourced |
75 (917) |
Cranberry Red1 | Not yet sourced |
78 (918) |
Rosewood1 | 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
| Code | Trim | Built |
|---|---|---|
708 |
Black Rapallo Cloth1 | Not yet sourced |
710 |
Black Elk Coated Fabric1 | Not yet sourced |
717 |
Sandalwood Rapallo Cloth1 | Not yet sourced |
727 |
Dark Blue Rapallo Cloth1 | Not yet sourced |
728 |
Dark Blue Rapallo Cloth1 | Not yet sourced |
729 |
Dark Jade Coated Fabric, Antique Dark Jade Coated Fabric1 | Not yet sourced |
734 |
Dark Jade Rapallo Cloth1 | Not yet sourced |
Identification
- Style number
- 13857 = Monte Carlo 2-door coupe.1
Identification
Read a 1971 Chevrolet VIN
The VIN decoder runs in your browser and never sends the VIN anywhere. How the factory numbered this year's cars:
Same model year
Also in 1971
- AMC AMX The AMX name moves onto the redesigned Javelin as its top model. It is a derivative badge, not a continuation of the two-seater. 2,054 were built, all with the 360 or 401.
- AMC Hornet SC/360 AMC's one-year compact muscle car pitched as an insurance-friendly alternative. AMC reportedly planned 10,000, but 784 were built.
- AMC Javelin A new, flared-fender Javelin, with the AMX name as its top model. Javelin won AMC the 1971 Trans-Am manufacturers' championship.
- AMC Matador Machine The Rebel Machine's unadvertised successor, a 'Machine Go' option package for the Matador hardtop. Production is unknown; published guesses run from 43 to 68.
- Buick Riviera The boattail Riviera: 455 rated 315 gross / 255 net, GS 330 / 265; 3,175 of 33,810 were GS.
- Buick Skylark Gran Sport, GS and GSX Compression fell to 8.5:1, the GS 350 and GS 455 were merged into one GS series of 9,170 cars, and the GSX became an appearance package on any GS.
- Chevrolet Chevelle and Malibu SS A single RPO Z15 SS package now spanned small- and big-block V8s; 9,502 of 19,293 SS cars carried the LS5 454, and Chevrolet began printing net ratings beside gross.
- Chevrolet Chevy II and Nova SS limited to the L48 350 per the source; Rally Nova (RPO YF1) offered. Enthusiast-compiled production: 194,878 cars; Super Sport 7,015.
- Chevrolet El Camino SS A single RPO Z15 SS package on the Malibu/Custom El Camino; the El Camino share of 19,293 SS cars is not separately published.
- Dodge Challenger Challenger's second year lost the SE, the R/T convertible, and the T/A; a new pillared coupe joined the hardtop and convertible, and production fell to roughly a third of 1970's.
- Dodge Charger A new, shorter third-generation body absorbed the Coronet two-doors and the Super Bee; it was the last year for the R/T and for a factory Hemi Charger.
- Dodge Coronet R/T and Super Bee The end of the line for Coronet performance: the two-door Coronets were replaced by the Charger, taking the Super Bee with them.
- Dodge Dart GTS, Swinger and Demon Dodge's version of the Duster fastback arrived as the Demon, and the Demon 340 became the performance Dart: 10,098 built, plus 85 Canadian Swinger 340 Specials.
- Ford Maverick Grabber The Grabber became its own model with a dual-scoop hood, and the 210 hp 302 V8 arrived; Classic Industries counts 38,963 Grabbers.
- Ford Ranchero GT The second Torino-based Ranchero year; reference counts give 3,632 GTs, while Barn Finds rounds the GT figure to about 3,900 of 24,946 Rancheros.
- Ford Thunderbird The last fifth-generation year kept the 360-hp 429 as standard; production fell to 36,055.
- Ford Torino A carryover year for the 1970 body; the Torino Cobra now came standard with a 351 four-barrel and offered the 429 Cobra Jet-R, but only 3,054 Cobras were built.
- Mercury Comet and Cyclone The final Cyclone year: production fell to a few thousand across Cyclone, Cyclone GT and Cyclone Spoiler.
- Mercury Cougar A larger second-generation Cougar, new body codes, and the one-year 429 Cobra Jet option, fitted to 448 cars.
- Oldsmobile Cutlass, 4-4-2 and Hurst/Olds Compression fell to 8.5:1 for regular fuel, the W-31 was dropped, the sports coupe was gone, and 4-4-2 production fell to 7,589.
- Plymouth Barracuda and 'Cuda Four headlamps and a new grille marked the second E-body year; the Hemi and 440 Six Barrel stayed on the 'Cuda order form, but Barracuda-line production fell to about a third of 1970's.
- Plymouth Duster 340 and 360 The Duster 340's second year brought a new grille, a Thermo-Quad 340 rated 275 gross and 235 net hp, and a $2,703 list price, while output fell to about 12,900.
- Plymouth GTX, Belvedere and Satellite On the redesigned 1971 Satellite body the GTX fell to 2,942 cars, only 30 of them with the Hemi.
- Plymouth Road Runner Redesigned on the new Satellite body as a hardtop only, the Road Runner fell to 14,218 cars, and a 340 joined the 383, 440, and Hemi.
- Pontiac Firebird and Trans Am The 455 HO year: the Trans Am's biggest engine, 2,116 cars, and a Formula line split across three V-8s.
- Pontiac GTO Lower compression, dual gross and net ratings, the 455 HO as the top engine, and production down to 10,532.
- Pontiac Grand Prix Boat-tail styling, lower compression, and the manual transmission gone by March: 116 of 58,325 had one.
- Pontiac Tempest and LeMans The Tempest name gives way to T-37; the GT-37 option carries on and the 455 HO is available in two-door LeMans models.