1975 · Plymouth · United States
1975 Plymouth Duster 360
Duster volume fell by more than half in 1975 and the Duster 360, now automatic-only in the brochure, to 1,421 cars, priced at $3,979.
United States · researched through 2026-09-23
Duster volume fell by more than half for 1975: 118,710 base Dusters and 1,421 Duster 360s for a total of 120,131, with the 360 by this point costing more than the Road Runner at $3,979. The 1975 brochure describes the Duster 360 with its 360 V8, TorqueFlite automatic, power front disc brakes, heavy-duty suspension and shocks, a front sway bar, E70x14 tires on 5.5-inch wheels, an 8 1/4-inch axle, dual exhaust except in California, and its own body side tape stripes; the brochure's own transmission chart shows no manual gearbox offered for the 360 at all. The Duster line added a Duster Custom trim level that year, while the Gold Duster and Space Duster Pak packages continued.1
This record's coverage of 1975 has an explicit, acknowledged gap: no factory data book, order guide, price list, or AMA specification sheet for the year was located, so paint codes, trim codes, engine horsepower and torque ratings, and option prices all remain open rather than filled in. Two figures circulating outside the sources actually consulted are flagged without being adopted: an unattributed Wikipedia bound of "fewer than 2,000" 1975 Dusters with the 360, which is consistent with but not independent confirmation of the 1,421 figure, and a valiant.org essay's claim of 267,525 for "the Valiant line" in 1975, whose scope is not defined in that source and which names no underlying source of its own.1
The only 1975 price on record is the Duster 360's own $3,979, with the basis behind that figure not specified by the source that states it. TorqueFlite was standard on the Duster 360 and optional in the Duster; the column-shift three-speed manual was standard in the Duster but not offered in the Duster 360; a floor-shift three-speed was optional in the Duster, likewise absent from the 360; and a four-speed manual was optional in the Duster and Duster Custom but again not available with the 360.1
Options for the year included the Space Duster Pak fold-down rear seat, the Gold Duster package, a manually operated sun roof, a Fuel Pacer system paired with the light package, automatic speed control, dual sport-styled mirrors, Rallye road wheels with raised-white-letter or steel-belted radial tires, and a Light Duty Towing Package requiring TorqueFlite and front disc brakes for trailers up to 2,000 lb loaded. Interior choices ran from an all-vinyl split-back bench in gold, green, blue, parchment, or black shown as standard, to a cloth-and-vinyl bench with a center armrest or all-vinyl bucket seats in black or white-on-black.
On the same 108-inch wheelbase, the Duster coupe measured 196.1 inches long, 71.0 inches wide, and 53.2 inches tall, with a 59.1-inch front and 55.6-inch rear tread. The Duster 360 specifically rode on 5 1/2 x 14 wheels with E70 bias-belted tires and an 8 1/4-inch rear axle. Sixteen exterior colors were shown in the brochure, including Powder Blue, Lucerne Blue Metallic, Rallye Red, Vintage Red Metallic, Spinnaker White, and Formal Black, though the source consulted did not return paint code letters for any of them, part of the same 1975 documentation gap noted above.
Fact sheet · 1975 · United States
The numbers
1975 Plymouth Duster 360 — Duster volume fell by more than half in 1975 and the Duster 360, now automatic-only in the brochure, to 1,421 cars, priced at $3,979.
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 |
|---|---|---|---|
| Duster, all models1 2-door coupe · not stated | 120,131 | built, model-year | Reported |
| What was counted | Count | Basis | Status |
|---|---|---|---|
| Duster, non-3601 Duster · 2-door coupe · not stated | 118,710 | built, model-year | Reported |
| Duster 3601,2 Duster 360 · 2-door coupe · 360 4-bbl · TorqueFlite (per the brochure) · not stated valiant.org agrees but is probably the same Standard Catalog lineage. | 1,421 | built, model-year | Reported |
Rows partition the total as the source presents it.
No Duster Custom, Gold Duster or Space Duster count was found.
Prices when new
| Model | Price | Basis |
|---|---|---|
| Duster 360 price1 | $3,979 | price as stated by the source (basis not specified), 1975 model year |
Prices are the nominal dollars of the day, not adjusted for inflation.
Engines
| Engine | Factory rating | Availability | Built |
|---|---|---|---|
| 360 V8, 4-bbl, dual exhaust (except California) 360 cu in · 4-barrel | standard in Duster 360 only | Not yet sourced | |
| 318 V8 318 cu in | standard V8 in Duster and Duster Custom; not in Duster 360 | Not yet sourced | |
| 225 Six 225 cu in | standard six in Duster and Duster Custom; not in Duster 360 | 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 |
|---|---|---|
| TorqueFlite automatic | standard in Duster 360; optional in Duster | Not yet sourced |
| Three-speed manual, column-mounted | standard in Duster; not in Duster 360 | Not yet sourced |
| Three-speed manual, floor-mounted | optional in Duster; not in Duster 360 | Not yet sourced |
| Four-speed manual | optional in Duster and Duster Custom; not in Duster 360 | Not yet sourced |
Options and packages
| Code | Option | Price | Installed |
|---|---|---|---|
|
Space Duster Pak (fold-down rear seat; Duster models) | — | Not yet sourced |
|
Gold Duster | — | Not yet sourced |
|
Sun roof, manual (Duster models) | — | Not yet sourced |
|
Fuel Pacer system (with the light package) | — | Not yet sourced |
|
Automatic speed control | — | Not yet sourced |
|
Dual sport-styled mirrors (Duster models) | — | Not yet sourced |
A34sales code |
Light Duty Towing Package (TorqueFlite and front disc brakes; up to 2,000 lb loaded trailer) | — | Not yet sourced |
|
Rallye road wheels; raised white letter and steel-belted radial tires | — | Not yet sourced |
Paint
| Code | Color | Built |
|---|---|---|
|
Powder Blue | Not yet sourced |
|
Lucerne Blue Metallic | Not yet sourced |
|
Deep Sherwood Metallic | Not yet sourced |
|
Frosty Green Metallic | Not yet sourced |
|
Yellow Blaze | Not yet sourced |
|
Sahara Beige | Not yet sourced |
|
Golden Fawn | Not yet sourced |
|
Sienna Metallic | Not yet sourced |
|
Cinnamon Metallic | Not yet sourced |
|
Rallye Red | Not yet sourced |
|
Vintage Red Metallic | Not yet sourced |
|
Inca Gold Metallic | Not yet sourced |
|
Spanish Gold Metallic | Not yet sourced |
|
Spinnaker White | Not yet sourced |
|
Silver Cloud Metallic | Not yet sourced |
|
Formal Black | 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 |
|---|---|---|
|
All-vinyl split-back bench seat, standard on the Duster shown: gold, green, blue, parchment or black | Not yet sourced |
|
Cloth-and-vinyl bench with center armrest, or all-vinyl bucket seats, in black or white-on-black | Not yet sourced |
Specifications
| Measure | Value | Applies to |
|---|---|---|
| Wheelbase | 108 in | Duster 2-door coupe |
| Overall length | 196.1 in | Duster 2-door coupe |
| Overall height | 53.2 in | Duster 2-door coupe |
| Overall width | 71 in | Duster 2-door coupe |
| Tread, front / rear | 59.1 / 55.6 in | Duster 2-door coupe |
| Wheels and tires | 5 1/2 x 14 wheels; E70 bias-belted tires | Duster 360 |
| Rear axle | 8 1/4 in | Duster 360 |
Same model year
Also in 1975
- AMC AMX No AMX was sold in the United States for 1975. The Javelin ended after 1974, and the badge returned on the 1977 Hornet.
- AMC Gremlin X and Spirit AMX Catalytic converters arrived, and steel-belted radials became standard with the X package.
- Buick Riviera Stage One dropped; the GS handling package continued on 3,101 of 17,306 cars.
- Buick Skylark Gran Sport, GS and GSX The endpoint: the Gran Sport survived only as a Century coupe trim package with the 231 V-6 or 350 V-8; no 455 was offered.
- Chevrolet Chevelle and Malibu SS The Laguna Type S-3 got its aerodynamic nose; 7,788 were built, and the 454 was listed at 215 net hp.
- Chevrolet Chevy II and Nova A 262 V8 appears for one year in the source engine table; Nova LN (RPO Z11) luxury option. Enthusiast-compiled production: 272,982 cars; Super Sport 9,067.
- Chevrolet El Camino SS Colonnade-era El Camino; Chevrolet's 1975 data pages define the RPO Z15 SS option for the El Camino Classic. Team Chevelle's production totals give 33,620 El Caminos built, 3,521 of them with SS equipment.
- Dodge Dart GTS, Swinger and Demon The Dart 360 Sport continued into 1975 at $4,014, but Flory prints its production as not available.
- Ford Maverick Grabber The Grabber's last year: 8,473 by Classic Industries count, about 8,500 per Consumer Guide.
- Ford Ranchero GT The Ranchero GT continued on the 1972-76 Ranchero; 6,114 GTs were built, per reference-site counts in the Standard Catalog lineage.
- Ford Thunderbird Sixth-generation personal-luxury Thunderbird; the record holds the production total and the luxury-group option prices only.
- Ford Torino The last Gran Torino Sport year: 5,126 were built as Torino production fell to 195,110, with a 351 standard and automatic transmission on every car.
- Mercury Cougar Outside the muscle focus: 62,987 Cougars for 1975 per Wikipedia's table.
- Oldsmobile Cutlass, 4-4-2 and Hurst/Olds The Hurst/Olds introduced Hurst Hatches T-tops on the Cutlass Supreme coupe; 2,535 were built, 1,293 white and 1,242 black.
- Plymouth Road Runner The Road Runner moved to the Fury host for one year.
- Pontiac Firebird and Trans Am The year the Trans Am took over the line: 27,274 built, more than twice the Formula.
- Pontiac Grand Am The last of the Colonnade Grand Ams: catalytic converter, a $4,887 start, and 10,679 built.
- Pontiac Grand Prix The LJ joins the line; the 455 is down to 200 hp net.
- Pontiac Tempest and LeMans Catalytic converters, standard radial tires and Radial Tuned Suspension arrive, the 455 leaves the LeMans, and the GT option becomes an automatic-only V8 package.