1968 · Plymouth · United States
The GTX Becomes Its Own Series
The GTX became its own model on the restyled 1968 intermediate body, still with the 375-hp 440 standard and the Hemi at $605, and outsold its first year.
United States · researched through 2026-09-22
For 1968 the GTX became its own series, DR2, on the restyled Plymouth intermediate body, with 17,914 hardtops (RS23) and 1,026 convertibles (RS27) for a stated 18,940 model total. The Sport Satellite, the range's other bucket-seat model, ran higher in hardtop volume at 21,014 units but lower in convertibles at 1,523, so the GTX and Sport Satellite split the intermediate line's two bucket-seat body styles between them rather than either one dominating both.1
The 440 Super Commando, rated 375 hp at 4,600 rpm and 480 lb-ft at 3,200 rpm, was standard equipment in the GTX, with the 426 Hemi available as a $605 option, notably cheaper than the same Hemi's $714 price in the Road Runner despite both cars sharing the identical 425-hp, 490-lb-ft Hemi rating. A single secondary lineage, repeating Chrysler production figures as compiled by UltimateMuscleCar, puts 1968 GTX Hemi installations at 446, though that source's own scope, whether it counts hardtops and convertibles together or separately, is not stated, so this record carries the 446 figure without further breakdown. No documented engine or transmission split for the standard 440 versus the optional Hemi was found across the 18,940 total GTX production for the year.1,2
One further Hemi-specific claim was found but not tabulated: an auction-news article states that only 36 1968 GTX Hemi convertibles were built, 24 with automatic and 12 with the four-speed, but since that source names no underlying factory record, this record carries the 36 figure only as an unpublished lead rather than a production count alongside the 446 total Hemi GTX figure above.1
The four-speed manual came at no additional charge in the GTX, while TorqueFlite automatic ran $227 with any V8 besides the 273. A Sure-Grip axle, shared with the Road Runner, cost $146, and a performance hood finish ran $18, alongside $15 body accent stripes and $102 road wheels. Air conditioning, at $355, sat well above smaller items like a $16 electric clock, $14 bumper guards, or a $21 rear window defogger. Sport-style wheel covers, at $38, were explicitly not available with the Street Hemi per the fact sheet's own note, one of the few option restrictions tied specifically to that engine in the sources consulted, and a solid-state AM radio with stereo tape ran $195 against $60 for the plain solid-state AM set alone.1
Shipping weight ran 3,520 lb for the GTX hardtop and 3,620 lb for the convertible, on a 116.0-inch wheelbase and 202.7-inch overall length shared with the other non-wagon intermediate bodies. Standard tires on the 440 and 426 cars ran F70x14, and twenty exterior colors were charted, from Buffed Silver and Black Velvet through Sunfire Yellow and Sierra Tan. Factory prices ran $3,329 for the hardtop and $3,590 for the convertible, and series and body numbers ran DR2 for the GTX series with RS23 and RS27 for its two bodies. No interior trim, performance figures, or engine/transmission production breakdown survive in the sources consulted for the year, leaving production, prices, the two-engine lineup, options, paint, and these specifications as the whole of what this record can document for the GTX's second season.1
Fact sheet · 1968 · United States
The numbers
1968 Plymouth GTX — The GTX became its own model on the restyled 1968 intermediate body, still with the 375-hp 440 standard and the Hemi at $605, and outsold its first year.
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.
Production
| What was counted | Count | Basis | Status |
|---|---|---|---|
| GTX 2-door hardtop (RS23)1,1 GTX · 2-door hardtop · not stated | 17,914 | not stated (production table), model-year | Reported |
| GTX convertible (RS27)1,1 GTX · convertible · not stated | 1,026 | not stated (production table), model-year | Reported |
| Sport Satellite 2-door hardtop (RP23)1 Sport Satellite · 2-door hardtop · not stated | 21,014 | not stated (production table), model-year | Reported |
| Sport Satellite convertible (RP27)1 Sport Satellite · convertible · not stated | 1,523 | not stated (production table), model-year | Reported |
| What was counted | Count | Basis | Status |
|---|---|---|---|
| GTX model total1 GTX · not stated | 18,940 | not stated (production table), model-year | Reported |
| What was counted | Count | Basis | Status |
|---|---|---|---|
| GTX with 426 Hemi2 GTX · 426 Hemi · not stated Single secondary lineage (Chrysler/Govier figures as repeated by UltimateMuscleCar); scope not stated. | 446 | not stated, model-year | Reported |
No documented engine or transmission breakdown was found for the 1968 GTX.
Prices when new
| Model | Price | Basis |
|---|---|---|
| GTX 2-door hardtop1 | $3,329 | factory price (list, per production table), 1968 model year |
| GTX convertible1 | $3,590 | factory price (list, per production table), 1968 model year |
Prices are the nominal dollars of the day, not adjusted for inflation.
Engines
| Engine | Factory rating | Availability | Built |
|---|---|---|---|
| 440 Super Commando 4-bbl1 440 cu in · single 4-barrel | 375 hp @ 4,600, 480 lb-ft @ 3,200 (SAE gross) | standard in GTX | Not yet sourced |
| 426 Hemi1 426 cu in · two 4-barrels | 425 hp @ 5,000, 490 lb-ft @ 4,000 (SAE gross) | optional; $605 in GTX | 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 |
|---|---|---|
| Four-speed manual1 | no charge in GTX | Not yet sourced |
| TorqueFlite three-speed automatic1 | available; $227 with V-8s other than the 273 (range price) | Not yet sourced |
Options and packages
| Code | Option | Price | Installed |
|---|---|---|---|
|
426 Hemi (GTX)1 | $605 | Not yet sourced |
|
Sure-Grip axle (Road Runner and GTX)1 | $146 | Not yet sourced |
|
Performance hood finish1 | $18 | Not yet sourced |
|
Body accent stripes1 | $15 | Not yet sourced |
|
Road wheels1 | $102 | Not yet sourced |
|
Air conditioning1 | $355 | Not yet sourced |
|
Tachometer1 | $51 | Not yet sourced |
|
4-speed manual floor-shift transmission (no charge in GTX)1 | — | Not yet sourced |
|
Automatic speed control1 | $53 | Not yet sourced |
|
Bumper guards, front and rear1 | $14 | Not yet sourced |
|
Deluxe wheel covers, 14 inch1 | $22 | Not yet sourced |
|
Electric clock1 | $16 | Not yet sourced |
|
Left and right head restraints1 | $44 | Not yet sourced |
|
Power brakes1 | $44 | Not yet sourced |
|
Power steering1 | $94 | Not yet sourced |
|
Power windows, hardtop and convertible1 | $105 | Not yet sourced |
|
Rear window defogger1 | $21 | Not yet sourced |
|
Solid-state AM radio1 | $60 | Not yet sourced |
|
Solid-state AM radio with stereo tape1 | $195 | Not yet sourced |
|
Special buffed paint1 | $22 | Not yet sourced |
|
Sport-style wheel covers, except Street Hemi1 | $38 | Not yet sourced |
|
Tinted glass, all windows1 | $42 | Not yet sourced |
|
Tinted windshield1 | $22 | Not yet sourced |
|
Two-tone paint, except convertible1 | $15 | Not yet sourced |
|
Upper belt mouldings, coupe and hardtop1 | $18 | Not yet sourced |
|
Vinyl roof1 | $79 | Not yet sourced |
Paint
| Code | Color | Built |
|---|---|---|
A |
Buffed Silver1 | Not yet sourced |
B |
Black Velvet1 | Not yet sourced |
C |
Medium Blue1 | Not yet sourced |
D |
Mist Blue1 | Not yet sourced |
E |
Midnight Blue1 | Not yet sourced |
F |
Mist Green1 | Not yet sourced |
G |
Forest Green1 | Not yet sourced |
H |
Yellow Gold1 | Not yet sourced |
J |
Ember Gold1 | Not yet sourced |
K |
Mist Turquoise1 | Not yet sourced |
L |
Surf Turquoise1 | Not yet sourced |
M |
Turbine Bronze1 | Not yet sourced |
P |
Matador Red1 | Not yet sourced |
Q |
Electric Blue1 | Not yet sourced |
R |
Burgundy1 | Not yet sourced |
S |
Sunfire Yellow1 | Not yet sourced |
T |
Avocado Green1 | Not yet sourced |
U |
Frost Blue1 | Not yet sourced |
W |
Sable White1 | Not yet sourced |
X |
Satin Beige1 | Not yet sourced |
Y |
Sierra Tan1 | 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.
Specifications
| Measure | Value | Applies to |
|---|---|---|
| Wheelbase1 | 116 in | non-wagon bodies |
| Overall length1 | 202.7 in | non-wagon bodies |
| Standard tire, 440/4261 | F70x14 | GTX |
| Shipping weight, GTX hardtop1 | 3,520 lb | RS23 |
| Shipping weight, GTX convertible1 | 3,620 lb | RS27 |
Identification
- Series and body numbers
- Series DR2; GTX body RS23 = hardtop, RS27 = convertible.1
Identification
Read a 1968 Plymouth VIN
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Also in 1968
- AMC AMX AMC's two-seat AMX arrived mid-year on a 97-inch wheelbase. The enthusiast production table counts 6,725 cars, two-thirds of them with the 390.
- AMC Javelin AMC's first pony car, launched in September 1967 as base and SST hardtops. Production of the two combined was about 55,000.
- AMC Rebel and Rebel Machine Now badged AMC, the Rebel came in 550, 770 and SST trims and could be ordered with the 315-hp 390. It is host-car context for the 1970 Machine.
- Buick Riviera Record Riviera sales of 49,284, including 5,337 with the GS handling option.
- Buick Skylark Gran Sport, GS and GSX On the new 112 in two-door body the GS 400 was joined by a GS 350 hardtop, and a dealer-installed Stage 1 package arrived for the 400.
- Buick Wildcat 73,561 Wildcats with the 430 V-8.
- Chevrolet Chevelle and Malibu SS The restyled Chevelle kept SS 396 as its own series and added an SS 396 El Camino: 62,785 SS 396s in three bodies.
- Chevrolet Chevy II and Nova SS engines per the source: L48 350, L34 396 and L78 396. Enthusiast-compiled production: 183,552 cars; Super Sport 5,571.
- Chevrolet El Camino SS The first factory Super Sport El Camino: a separate SS 396 model, 13880, built 5,190 times.
- Chevrolet Impala SS Super Sport becomes an option again (RPO Z03): 36,432, plus 1,778 SS427 (RPO Z24).
- Dodge Charger The redesigned 'Coke bottle' Charger and the new R/T multiplied sales roughly sixfold over 1967.
- Dodge Coronet R/T and Super Bee The redesigned Coronet kept the 440-powered R/T and added the budget Super Bee coupe, a 383 car with an optional Hemi.
- Dodge Dart GTS, Swinger and Demon The new Dart GTS brought a 275 hp 340 or a 300 hp 383, and in February Dodge released 80 Hurst-completed LO23 Hemi Darts for Super Stock drag racing; GTS production was not reported separately.
- Ford Fairlane The restyled intermediate split into Fairlane, Fairlane 500 and the new Torino series; the Fairlane 500 fastback shared the Torino GT body and the 428 Cobra Jet arrived on April 1, 1968.
- Ford Ranchero GT The Ranchero GT carried Torino GT trim; 1,669 GTs were built, per reference-site counts in the Standard Catalog lineage.
- Ford Thunderbird The new 429 Thunder Jet V-8 arrived as the Thunderbird's optional engine at 360 hp.
- Ford Torino Torino arrived as the new top series of the restyled Fairlane line, the Torino GT fastback became its volume performance car, and the 428 Cobra Jet was added on April 1, 1968.
- Mercury Comet and Cyclone The Cyclone moved to the new Montego-based intermediate; the fastback outsold the notchback hardtop by about ten to one, and the 428 Cobra Jet arrived mid-year.
- Mercury Cougar The year of the 427 GT-E, the mid-year 428 Cobra Jet, and the XR7-G, with production down to 113,741.
- Mercury Marauder and S-55 Neither the S-55 nor the Marauder model appears in the sources for 1968; no performance full-size Mercury production figure was found.
- Oldsmobile Cutlass, 4-4-2 and Hurst/Olds The restyled 4-4-2 became its own series, the W-31 small-block arrived, and Hurst built the first 455 Hurst/Olds: 515 cars in the tabulation.
- Plymouth Barracuda and 'Cuda The new 340 arrived in the Formula S alongside the 383, and Plymouth issued a competition-only Hemi Barracuda under order code BO29.
- Plymouth Road Runner Plymouth added a stripped Belvedere-based coupe and hardtop with a special 335-hp 383 as standard and the 426 Hemi as the only engine option, and sold 44,599 of them.
- Pontiac Firebird and Trans Am The first full season: the six grew to 250 cu in, the 326 gave way to a 350, and output rose to 107,112.
- Pontiac GTO A new 112-inch-wheelbase body with an Endura nose, the sport coupe dropped, and 87,684 built.
- Pontiac Grand Prix The last full-size Grand Prix: 31,711 hardtops, with a 390 hp 428 HO at the top.
- Pontiac Tempest and LeMans The new two-door body arrives, and a 350 HO replaces the 326 HO.