1972 Dodge Challenger Rallye

Pony car powered by 1972 Challenger Rallye LA V8 range.

1972 Dodge Challenger Rallye in a stock-appearing front three-quarter view

Engines Standard 318 two-barrel or optional 340 four-barrel V8

Transmissions Three-speed manual, 340-only four-speed, or TorqueFlite

Wheelbase 110 inches

Factory price $3,082 reported base price

Identity JS23G2 for 318 or JS23H2 for 340

Story

1972 Dodge Challenger Rallye

The Challenger Rallye replaced the R/T as Dodge's named performance model for 1972. It was a single two-door hardtop identity with a standard 318 two-barrel V8 and an optional 340 four-barrel. Keeping both engines on this page preserves the way Dodge sold the car and avoids turning an engine choice into a duplicate model.

The Rallye was easy to spot when complete: a black grille and lower rear panel, a sport hood, simulated fender scoops, strobe-style side stripes, and a full instrument cluster with a 150-mph speedometer and tachometer. The 340 added 240 net horsepower, dual exhaust, electronic ignition, larger front torsion bars, a rear sway bar, and access to the four-speed manual. TorqueFlite remained available with either engine, while axle ratios followed the selected powertrain.

Those visible details are useful context, not proof. A factory Rallye should have a JS23 VIN with the correct G- or H-code engine digit, supported by its fender tag, broadcast sheet, body stamps, drivetrain stamps, and original paperwork. Later hoods, stripes, scoops, wheels, or a 340 swap can make a regular Challenger look convincing without establishing its factory identity.

**Top Banana 1972 Challenger Rallye 340 with Rallye wheels and side stripes**GPS 56 via Wikimedia Commons · CC BY 2.0

Price history

Values

Nominal dollars from original price sheets, auction archives, and approved value references.

Original Price

Base MSRP $3,082

Challenger Rallye two-door hardtop (1972)
Public model reference price; a factory price book has not yet been recovered.
1972 Dodge Challenger Specifications and Production

Market Observations

High bid $35,500

Jun 7, 2024 · Bring a Trailer
Blue-over-white 340 automatic Rallye with a 2021 engine rebuild and several disclosed replacement or upgraded components. · restored · good The reserve-not-met high bid is not a completed sale and remains labeled separately.
1972 Dodge Challenger Rallye 340 - June 2024
Auction sale $34,500

Dec 22, 2021 · Bring a Trailer
JS23H2B420620, 340 automatic Rallye with repaint, rebuilt engine, aftermarket carburetor, wheels, audio and reported corrosion. · modified · good Bring a Trailer records the completed sale, exact chassis and disclosed modifications and condition limitations.
1972 Dodge Challenger Rallye 340 - December 2021
Auction sale $27,500

Jan 9, 2019 · Mecum Kissimmee
JS23H2B446930, 340 four-speed Rallye with power discs and documented aftermarket intake, carburetor, wheels and tires. · modified · good Modified/Good preserves the disclosed equipment without treating it as factory-correct evidence.
1972 Dodge Challenger Rallye - Kissimmee 2019
Auction sale $41,000

Sep 9, 2016 · Mecum Louisville
JS23H2B322428, 340 four-speed Rallye with matching-numbers claim and decoded fender tag. · restored · excellent Mecum records a completed sale and disclosed restoration, aftermarket wheels and engine dress-up equipment.
1972 Dodge Challenger Rallye - Louisville 2016

Values move with paperwork, originality, options, condition, venue, and body style. High bids and guide values are labeled separately from completed sales.

Reference records

Options, Colors & Components

Source-backed details for trim, chassis, production, and authenticity.

Engine Details

318 two-barrel LA V8 150 SAE net hp; 8.6:1 compression; single exhaust · standard Rallye engine · engine assembly / specification
340 four-barrel LA V8 240 SAE net hp; 8.5:1 compression; dual exhaust; electronic ignition · optional Rallye engine · engine assembly / specification
318 block geometry High-strength cast-iron OHV V8 block with 3.91-inch bore and 3.31-inch stroke · Standard 318-cu.-in. Challenger Rallye engine · block / specification
318 induction and rotating assembly Two-barrel carburetor, single-level intake manifold, cast-iron crankshaft, hydraulic tappets, and single exhaust · Standard 318-cu.-in. Challenger Rallye engine · engine assembly / specification
340 block geometry High-strength cast-iron OHV V8 block with 4.04-inch bore and 3.31-inch stroke · Optional 340-cu.-in. four-barrel Challenger Rallye engine · block / specification
340 performance construction Forged crankshaft, double-roller timing chain and sprockets, four-barrel carburetor, special camshaft, unsilenced air cleaner, and dual exhaust · Optional 340-cu.-in. four-barrel Challenger Rallye engine · engine assembly / specification
N23 electronic ignition Standard with the 340 V8 package and optional with the 318 V8 · Corrected Challenger application from the factory errata sheet · ignition / other
Connecting rods and bearings Drop-forged manganese-steel I-beam rods; 318 bearing size 2.13 x 0.843 inches and 340 bearing size 2.38 x 0.927 inches · Factory 318 and 340 V8 specifications · connecting rod / specification
Hydraulic tappets Hydraulic tappets with chrome-plated plungers · Factory 318 and 340 V8 specification · valve train / specification
Engine filtration Heavy-duty replaceable-element dry air cleaner, full-flow throwaway oil filter, 40-micron tank fuel filter, and 15-micron filter between pump and carburetor · Factory 318 and 340 V8 service specification · other / specification
Lubrication system Positive-pressure regulated and filtered system with rotary positive-displacement pump; 4-quart oil capacity plus one quart when changing the filter · Factory 318 and 340 V8 service specification · other / specification
Cooling-system capacity 16 quarts for the 318 V8 and 15 quarts for the 340 V8, including heater; add one quart with air conditioning · 16-psi pressure-vent-cap cooling systems · other / specification

Transmission

Factory transmission Floor-shift three-speed manual standard with either engine
Factory transmission Hurst-shifted four-speed manual optional only with the 340
Factory transmission TorqueFlite three-speed automatic optional with either engine; console shift required the console

Options

Factory powertrain reference for the 1972 Challenger RallyeClassic Muscle · Reference illustration

JS23 Challenger Rallye two-door hardtop factory · performance · 1972 Rallye series identity; G and H engine digits distinguish 318 and 340 cars.
A36 Performance Axle Package optional · performance · 340-only package with 3.55 Sure-Grip, 26-inch radiator and fan shroud, plus a steering-oil cooler when power steering was ordered.
D21 Four-speed manual transmission optional · performance · 340-only Hurst-shifted four-speed path.
D34 TorqueFlite automatic transmission optional · performance · Column or console shift depending on console selection.
B41 Power front disc brakes optional · safety · Power braking required the front-disc system.
M51 Sun roof with vinyl roof optional · appearance · Factory power-operated roof opening; the convertible was no longer offered.
W21 Rallye wheels with trim rings optional · appearance · Optional set of four 14-inch Rallye wheels; wheel appearance alone does not establish identity.
E44 318 two-barrel V8 standard · performance · Standard Challenger Rallye engine; the fifth VIN character is G.
E55 340 four-barrel V8 optional · performance · Extra-cost Rallye engine path with electronic ignition, dual exhaust and Rallye suspension; the fifth VIN character is H.
D13 Three-speed manual transmission standard · performance · Standard floor-shift transmission with the 318 or 340.
H51 Air conditioning optional · comfort · Extra-cost factory air; unavailable with the three-speed manual transmission. Tinted glass was recommended.
F25 70-amp-hour battery optional · performance · Extra-cost battery in place of the standard 46-amp-hour unit.
M85 Front and rear bumper guards optional · appearance · Extra-cost front and rear guards with rubber inserts.
C16 Center console optional · interior · Extra-cost console; required for the console-mounted TorqueFlite selector.
H31 Rear-window defogger optional · comfort · Instrument-panel-controlled rear-window defogger.
D91 Sure-Grip differential optional · chassis · Extra-cost limited-slip differential; A36 included Sure-Grip with a 3.55 ratio on 340 cars.
G11/G21 Tinted or clear glass with air conditioning optional · comfort · G11 tinted glass was extra cost and recommended with air conditioning; G21 selected no-charge clear glass when air conditioning was ordered without tint.
G35/G36/G37 Racing mirror choices optional · appearance · Extra-cost remote left mirror, dual body-color racing mirrors or dual chrome racing mirrors.
M25/M05/V5X Exterior molding and protection choices optional · appearance · Extra-cost custom sill moldings, door-edge protectors and full-length bodyside molding with vinyl insert.
N95 California emissions control optional · other · Extra-cost Nitrous Oxide Emissions Control equipment for California delivery; this is an emissions system, not a performance nitrous-oxide injection option.
S77 Power steering optional · comfort · Extra-cost full-time power steering; A36 added a steering-oil cooler when power steering was ordered.
R11/R26/R35 Factory radio choices optional · comfort · Extra-cost Music Master AM, AM radio with cassette or Multiplex AM/FM stereo.
R31/R32 Rear-speaker choices optional · comfort · R31 supplied one rear speaker with R11 only; R32 supplied dual rear speakers with R26 or R35.
J97 Rallye instrument-panel cluster standard · interior · Standard Rallye equipment with simulated woodgrain, tachometer, clock, trip odometer, full gauges, variable-speed wipers, electric washers and a 150-mph speedometer.
S13 Rallye suspension optional · chassis · Extra-cost front and rear Rallye suspension with sway bars on the 318; standard with the 340.
J55 Undercoating and hood silencer pad optional · other · Extra-cost undercoating and hood-silencer package.
W23/W11 Road wheels or deluxe wheel covers optional · appearance · Extra-cost set of four 14-inch road wheels with chrome trim rings or deluxe 14-inch wheel covers.
J25 Variable-speed wipers and electric washers standard · comfort · Standard Challenger Rallye equipment and part of the standard Rallye cluster.
A01 Light Group optional · comfort · Extra-cost group with ashtray, glove-box, trunk, ignition-delay, map/courtesy and instrument-panel flood lamps plus fender-mounted turn-signal indicators.
N23 Electronic ignition optional · performance · The factory errata makes N23 optional with the 318 and standard with the 340 engine package.

Paint

**Light Gunmetal 1972 Challenger Rallye 340 showing its hood, scoops and stripe treatment**Sicnag via Wikimedia Commons · CC BY 2.0

GA4 Light Gunmetal Metallic factory · metallic
HB1 Light Blue factory · solid
TB3 Super Blue factory · solid
GB5 Bright Blue Metallic factory · metallic
FE5 Red factory · solid
GF3 Light Green Metallic factory · metallic
GF7 Dark Green Metallic factory · metallic
HT6 Medium Tan Metallic factory · metallic
HT8 Dark Tan Metallic factory · metallic
EV2 Hemi Orange optional · solid
EW1 Eggshell White factory · solid
TX9 Black factory · solid
FY1 Top Banana optional · solid
GY4 Light Gold factory · solid
GY8 Gold Metallic factory · metallic
GY9 Dark Gold Metallic factory · metallic

Appearance

Black Rallye grille standard · other
Performance hood with scoop insert standard · hood
Fender-scoop strobe side stripes standard · stripe
Black lower rear panel standard · other
Hubcaps, Rallye wheels or styled road wheels factory · wheel
Bright exhaust tips optional · other

Interior

Full-foam all-vinyl high-back bucket seats standard · seat
Rallye instrument cluster standard · gauge
Center console optional · console
Hurst floor shifter optional · shifter
Black two-spoke sport steering wheel standard · steering wheel

Chassis

Torsion-bar independent front suspension Suspension · standard
Leaf-spring live rear axle Suspension · standard
S13 Rallye suspension Suspension · optional
1972 Challenger factory suspension service schedule Suspension · factory
Dual-hydraulic self-adjusting drum brakes Brakes · standard
Power front disc brakes Brakes · optional
Conventional rear axle Rear axle · 2.76 or 3.23 by engine and transmission · factory
Sure-Grip rear axle Rear axle · 3.23 or 3.55 by configuration · limited-slip · optional
Factory Challenger 8 3/4-inch rear-axle service reference Rear axle · 3.23:1 and 3.55:1 Challenger service applications · limited-slip · factory

Production

1972 Challenger street view showing the model-year grille and hardtop profileZidaneHartono via Wikimedia Commons · CC BY-SA 4.0

Chassis and brake reference for the 1972 Challenger RallyeClassic Muscle · Reference illustration

1972 Challenger Rallye hardtop total · 8,123 · reported
JS23G2B Rallye with 318 by engine · 1,853 · reported

Authenticity

Transmission and axle reference for the 1972 Challenger RallyeClassic Muscle · Reference illustration

**Restored 1972 Rallye exterior with a nonfactory big-block claim and later wheels disclosed**Sicnag via Wikimedia Commons · CC BY 2.0

VIN series and body code JS23 for a 1972 Rallye two-door hardtop · Dash VIN plate, fender tag, door certification label and title history. · fraud detection
VIN engine digit G for the factory 318 or H for the factory 340 · Fifth VIN position, broadcast sheet, fender tag and drivetrain stamps. · numbers matching
Body and drivetrain stamp agreement Partial VIN stamps and component identifiers consistent with the car and scheduled build date · Radiator support, cowl or rear body stamping, engine pad and transmission case. · numbers matching
Fender tag and broadcast sheet Codes compatible with the represented engine, transmission, axle, paint, trim, stripe and equipment · Driver-side inner-fender tag and surviving broadcast sheet, checked against original records. · fraud detection
Paint and trim evidence Fender-tag paint and trim codes consistent with the represented finish and interior · Fender tag, broadcast sheet, hidden original finish and restoration records. · trim correctness

Still Researching

engine Factory specifications establish both engines' output, geometry, block and rotating-assembly construction, induction and exhaust, ignition availability, rods and bearings, valvetrain, filtration, lubrication, and cooling, but complete casting-number, assembly-code, carburetor, distributor, stamp, effective-date, and running-change matrices were not recovered.
transmission Factory availability is documented; transmission case, tag and date compatibility remains car-specific.
rear axle Factory ratios and Sure-Grip paths are documented, and the final factory parts catalog adds Challenger-applicable 8 3/4-inch 3.23 conventional and 3.55 Sure-Grip carriers and gear sets plus housing, carrier-casting, spline, and ratio-tag identification. Complete production assembly codes, tag decoding, build-date ranges, running revisions, and individual-car installation remain unresolved.
brakes Factory records now document standard 10 x 2 1/2-inch drums, the Rallye power-disc path with 11 x 2 1/2-inch rear drums, and principal Challenger-applicable service identifiers. Complete production assembly codes, component dates, supersessions, and individual-car installation remain unresolved.
suspension Factory layout, 318/340 torsion-bar service pairs, standard and heavy-duty Challenger shock packages, and principal hardtop rear spring assemblies are documented, but the final S13-to-service-part mapping, supplier and component dates, running revisions, supersessions, and individual-car installation remain incomplete.
option packages The factory dealer table now covers the principal standard and extra-cost Rallye paths, model applicability and stated dependencies, but dollar prices, complete cross-option exclusions and build-date revisions remain incomplete.
production Public totals conflict and no reviewed factory ledger establishes final Rallye or engine splits.
paint colors Sixteen paint-code paths are reviewed, but effective-date and Rallye stripe compatibility require a dated selector.
trim and appearance Core Rallye exterior treatment is documented, but every stripe, roof, wheel and color combination is not.
interior Standard seats, colors and Rallye instruments are documented, but complete trim-code and material compatibility is not.
authenticity markers VIN and tag structure is documented; individual originality still requires protected records and physical inspection.