1971 · Dodge · United States
The Demon Arrives, Thinly Documented
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.
United States · researched through 2026-09-23
For 1971 Dodge added the Demon, its own version of Plymouth's fastback A-body coupe, with the Demon 340 as the line's performance model. Two separate compilations put Demon 340 production at 10,098, one citing Galen Govier and Consumer Guide and the other, MuscleCarClub, naming no source of its own; a further 85 Canadian-market Swinger 340 Specials are counted separately, a distinct geographic scope this record keeps apart from the US Demon 340 figure rather than folding it into the same total, since the Canadian car carried the Swinger 340 name rather than the Demon 340 nameplate used south of the border.1,2
Flory's own reference book, a third and independently published source, confirms the 10,098 figure under style number LM29, and separately gives 69,861 for the base Demon under style number LL29; those two rows are Flory's complete breakdown of the 1971 Demon line by body style, and summing them yields 79,959, a figure this record computes itself and marks as estimated rather than treating as a line Flory printed directly, since he lists the two styles separately rather than as a combined total.3
That same 79,959 figure circulates on enthusiast forums as an unattributed "all engines" total, consistent with a shared Flory or AMA lineage rather than an independent confirmation of the number; one forum thread also states that Hemmings gives a figure "just under 70,000," though it is not clear from the source consulted whether that lower figure describes the base Demon alone or some other narrower scope, so this record carries it only as an unpublished lead rather than a competing production total. A second unpublished lead concerns 1971 Demon 340 ratings, equipment, and prices from a specialist enthusiast site; no 1971 Dodge Dart or Demon factory artifact was read directly in this pass to confirm or supplement it.3
Base manufacturer's suggested retail price ran $2,721 for the Demon 340 against $2,343 for the base Demon, a $378 gap per Flory's own tabulated figures, and shipping weight for the Demon 340 is recorded at 3,165 lb. Both figures come from the same single-page table in Flory's reference book, which also supplies the two style numbers, LL29 for the plain Demon and LM29 for the 340, that this record uses for identification. Beyond production, pricing, that one weight figure, and those two style numbers, no engine ratings, transmission choices, options, paint colors, interior trim, or performance figures for 1971 survive in the sources consulted.3
For 1971 specifically, the two production compilations and Flory's reference book supply only body-style counts, base prices, and one shipping weight; no factory fact sheet, AMA specification sheet, owner's manual, or period road test for the Demon 340 was located and read in this pass to fill in the remaining sections, so this record's gaps reflect what could not be found and confirmed rather than what does not exist, and the second unpublished lead noted above names one candidate source, a specialist enthusiast site, that a future research pass could check for exactly that missing engine, equipment, and pricing detail.2
Fact sheet · 1971 · United States
The numbers
1971 Dodge Demon 340 — 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.
Coverage: Partial — researched sections are shown; missing ones are not yet sourced. Researched through 2026-09-23.
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
Production
| What was counted | Count | Basis | Status |
|---|---|---|---|
| Demon 3401,2 Demon 340 · 2-door coupe · 340 4-bbl · not stated | 10,098 | built, model-year | Reported |
| Demon 340 (LM29), Flory3 Demon 340 · 2-door coupe · 340 4-bbl · not stated Agrees with the swinger340specials figure. | 10,098 | built, model-year | Reported |
| Demon (LL29), all other engines3 Demon · 2-door coupe · not stated Host-model context. With the Demon 340 row this totals 79,959, matching the unpublished lead; Flory lists the two styles separately. | 69,861 | built, model-year | Reported |
| What was counted | Count | Basis | Status |
|---|---|---|---|
| Swinger 340 Special (Canada)1 Swinger 340 Special · 2-door hardtop · 340 4-bbl · Canada Canadian-market car; not part of the US Demon 340 count. | 85 | built, model-year | Reported |
| What was counted | Count | Basis | Status |
|---|---|---|---|
| Demon, all engines (LL29 + LM29 combined)3 Demon incl. Demon 340 · 2-door coupe · not stated Not a line Flory himself prints; it is the sum of his own two rows, which together are his complete 1971 Demon breakdown. Matches the 79,959 figure that circulates on forums as an unattributed 'all engines' total, consistent with a shared Flory/AMA lineage rather than independent confirmation. | 79,959 | built, model-year | Estimate |
Separately scoped; do not add.
The 79,959 total row is computed from this record's own two Flory-sourced rows (status kept as 'estimated' to flag that Flory prints the body-style split, not a single total line).
Prices when new
| Model | Price | Basis |
|---|---|---|
| Base MSRP, Demon 340 2-door coupe (LM29)3 | $2,721 | base manufacturer's suggested retail price as tabulated by Flory, 1971 model year |
| Base MSRP, Demon 2-door coupe (LL29)3 | $2,343 | base manufacturer's suggested retail price as tabulated by Flory, 1971 model year |
Prices are the nominal dollars of the day, not adjusted for inflation.
Specifications
| Measure | Value | Applies to |
|---|---|---|
| Shipping weight, Demon 3403 | 3,165 lb | LM29 |
Identification
- Style numbers
- Flory lists the 1971 Demon as LL29 and the Demon 340 as LM29.3
Identification
Read a 1971 Dodge 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.
- Chevrolet Monte Carlo SS The last SS 454 year: RPO Z20 on 1,919 of 128,600 Monte Carlos.
- 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.
- 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.