1972 AMC Javelin AMX 401

Pony car powered by AMC 401 V8.

1972 AMC Javelin AMX 401 Go Package automatic front view

Body Four-seat Javelin AMX hardtop on a 110-inch wheelbase

Engine 401 four-barrel V8, rated at 255 net hp and 345 lb-ft

Transmissions T-10 four-speed or Torque-Command A727 automatic

AMX 401 production 825 reported for 1972

Story

1972 AMC Javelin AMX 401

The 1972 Javelin AMX carried AMC's largest engine into the second year of the dramatic wide-fender body. Its 401-cubic-inch four-barrel V8 was rated at 255 SAE net horsepower and 345 lb-ft of torque. A Borg-Warner T-10 four-speed remained available, while AMC replaced the earlier Borg-Warner automatic with the Chrysler-built Torque-Command A727 for 360 and 401 cars.

The AMX was the performance version of the four-seat Javelin, not the separate two-seat AMX built through 1970. AMX details included the mesh grille, cowl-induction hood, front and rear spoilers, badging, and model-specific trim. The optional Go Package combined the 360 or 401 four-barrel with dual exhaust, Rally-Pac instruments, the handling package, heavy-duty cooling, Twin-Grip, power front discs, 15-inch wheels and tires, a hood T-stripe, and a black rear panel. AMX appearance or a 401 engine alone does not establish the Go Package.

AMC offered nineteen exterior colors for 1972, plus vinyl or corduroy upholstery choices in multiple cabin colors. The midyear Pierre Cardin interior added striped red, silver, plum, and white fabric against black, but it was independent of the 401 and Go Package.

American Motors records reported by Hemmings list 26,184 Javelins, including 3,220 AMXs. Of those AMXs, 825 carried the 401. For an individual car, the AMX body code, Z-code 401 VIN evidence, engine tag and casting dates, transmission identity, axle tag, door tag, build sheet, window sticker, and original paperwork should agree.

**Factory-original Jetset Blue 1972 AMC Javelin AMX 401 four-speed rear view**Christopher Ziemnowicz via Wikimedia Commons · CC BY-SA 4.0

Price history

Values

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

Original Price

A verified original price is not yet available for this car.

Market Observations

Price guide value $31,200

Jul 1, 2026 · Hagerty Price Guide · Current guide point
1972 American Motors Javelin AMX two-door fastback with the 401-cid/255-hp four-barrel V-8 in #3 Good condition. · unknown · good Hagerty's July 2026 engine-selected 401 configuration supplies the current #3 Good value. The default 360 configuration and broad Javelin/AMX aggregates are excluded.
1972 American Motors Javelin AMX 401 values
Auction sale $25,250

Jul 1, 2020 · Bring a Trailer
Z-code 1972 Javelin AMX A2C798Z228830 with a rebuilt 401 V-8, TorqueFlite automatic, Go Package, and Twin-Grip differential. · modified · good Bring a Trailer supplies the primary completed result, exact chassis, date, amount, 401 configuration, drivetrain, equipment, and modification history. Classic.com corroborates the exact chassis, 401, Go Package, date, and amount. Hagerty's fee-adjusted report is not counted separately.
1972 AMC Javelin AMX VIN A2C798Z228830, lot 33,422 1972 AMC Javelin AMX VIN A2C798Z228830

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

**Factory-original 1972 AMC Javelin AMX 401 four-speed engine bay**Christopher Ziemnowicz via Wikimedia Commons · CC BY-SA 4.0

Compression ratio 8.5:1 · 1972 AMC 401 CID V-8, 4-barrel · engine assembly / specification
Carburetor type 1, 4-BBL · 1972 AMC 401 CID V-8, 4-barrel · carburetor / specification
Manual-transmission carburetor AM(F4)4300 2TM4 · 1972 AMC 401 CID V-8, 4-barrel with manual transmission · carburetor / engineering number
Automatic-transmission carburetor AM(F4)4300 2TA4 · 1972 AMC 401 CID V-8, 4-barrel with automatic transmission · carburetor / engineering number
Primary and secondary throttle bore 1.56 primary; 1.69 secondary · 1972 AMC 401 CID V-8, 4-barrel · carburetor / specification
Dual exhaust availability Dual exhaust standard with 401 4-B V-8 · 1972 AMC Javelin with 401 CID 4-barrel V-8 · exhaust manifold / specification

Transmission

Factory transmission AMC Borg-Warner T-10 four-speed manual
Factory transmission AMC Torque-Command A727 three-speed automatic

Options

AMC 401 V8 reference for the 1972 AMC Javelin AMX 401Classic Muscle · Reference illustration

AMX Javelin AMX performance model factory · performance · The four-seat Javelin AMX replaced the earlier separate two-seat AMX model.
401 401 CID four-barrel V8 optional · performance · Top engine branch and subject of this page; engine evidence remains separate from Go Package proof.
Go Package 1972 Javelin AMX Go Package optional · performance · Available with 360 or 401 four-barrel power; verify all package hardware and records together.
W Pierre Cardin designer interior optional · interior · Midyear patterned interior option independent of engine and Go Package identity.

Paint

A1 Snow White factory · solid
A2 Canary Yellow factory · solid
C2 Stardust Silver factory · metallic
C3 Skyway Blue factory · solid
C4 Jetset Blue factory · metallic
C5 Admiral Blue factory · metallic
C6 Surfside Turquoise factory · solid
C8 Grasshopper Green factory · metallic
C9 Hunter Green factory · metallic
D1 Jolly Green factory · solid
D2 Yuca Tan factory · metallic
D3 Baja Bronze factory · metallic
D4 Cordoba Brown factory · metallic
D5 Butterscotch Gold factory · solid
D7 Trans-Am Red factory · solid
D8 Sparkling Burgundy factory · solid
D9 Wild Plum factory · metallic
P1 Classic Black factory · solid
P81 Gray factory · solid

Appearance

Fiberglass cowl-induction AMX hood factory · hood
AMX front and rear spoilers factory · spoiler
Go Package hood T-stripe and black rear panel optional · stripe
15x7 styled steel wheels with E60-15 raised-white-letter tires optional · wheel
Javelin AMX and 401 identification factory · badge

Interior

**Factory-original 1972 AMC Javelin AMX 401 four-speed cockpit**Christopher Ziemnowicz via Wikimedia Commons · CC BY-SA 4.0

High-back reclining bucket seats factory · seat
Vinyl: Black 61S, Blue 63S, Green 64S, Red/Black 65S, Tan 66S, or White 68S factory · upholstery
Corduroy: Black 61R, Blue 63R, Green 64R, or Tan 66R optional · upholstery
Pierre Cardin striped designer interior, code W optional · upholstery
Rally-Pac instruments with Go Package optional · gauge
Floor console and transmission controls factory · console

Chassis

Independent front suspension with coil springs and control arms Suspension · factory
Parallel rear leaf springs Suspension · factory
Go Package handling suspension Suspension · optional
Manual four-wheel drum brakes Brakes · standard
Go Package power front disc brakes Brakes · optional
AMC rear axle Rear axle · factory
Twin-Grip limited-slip differential Rear axle · limited-slip · optional
AMC rear axle, 3.54 ratio Rear axle · 3.54 · standard
AMC rear axle, 3.15 ratio Rear axle · 3.15 · optional
AMC rear axle, 3.91 ratio Rear axle · 3.91 · limited-slip · optional
AMC rear axle, 2.87 ratio Rear axle · 2.87 · standard
AMC rear axle, 3.15 ratio Rear axle · 3.15 · optional
AMC rear axle, 3.54 ratio Rear axle · 3.54 · optional
AMC rear axle, 3.15 ratio with Twin-Grip Rear axle · 3.15 · limited-slip · standard
AMC rear axle, 2.87 ratio with Twin-Grip Rear axle · 2.87 · limited-slip · optional
AMC rear axle, 3.54 ratio with Twin-Grip Rear axle · 3.54 · limited-slip · optional
AMC dealer-kit rear axle, 3.73 ratio Rear axle · 3.73 · dealer
AMC dealer-kit rear axle, 4.10 ratio Rear axle · 4.10 · dealer
AMC dealer-kit rear axle, 4.44 ratio Rear axle · 4.44 · dealer
AMC dealer-kit rear axle, 5.00 ratio Rear axle · 5.00 · dealer

Production

Transmission Records reference for the 1972 AMC Javelin AMX 401Classic Muscle · Reference illustration

1972 AMC Javelin, all models and engines total · 26,184 · documented
1972 AMC Javelin AMX, all engines by body · 3,220 · documented
1972 AMC Javelin AMX with 401 V8 by engine · 825 · documented

Authenticity

AMC Rear Axle reference for the 1972 AMC Javelin AMX 401Classic Muscle · Reference illustration

Javelin AMX identity AMX body/model code, mesh grille, hood, spoilers, trim, and records agree · VIN/body code, door tag, grille, hood, spoilers, build sheet, window sticker · fraud detection
401 engine identity Z engine code and 401 tag, casting, date, and paperwork evidence agree · VIN, engine tag and castings, build sheet, window sticker · numbers matching
Transmission path T-10 four-speed or Torque-Command A727 automatic matching tags, controls, and paperwork · Transmission tag or case, shifter, linkage, console, build records · date correctness
Go Package evidence Powertrain, induction, exhaust, gauges, cooling, suspension, brakes, Twin-Grip, wheels, tires, stripe, and rear panel agree with records · Build sheet, window sticker, hood and induction, brakes, axle, suspension, cooling system · trim correctness
Paint and interior Door-tag paint and trim codes agree with original layers, upholstery, and paperwork · Door tag, hidden paint areas, seat and door trim, build records · trim correctness

Still Researching

engine The factory AMA specifications now record compression, 401 four-barrel carburetor applications, throttle-bore specification, and standard Javelin 401 dual exhaust, but every tag, casting, emissions, ignition, fuel, accessory-drive, and date-code variation is not.
transmission T-10 and Torque-Command A727 paths are recorded, but the complete tag, case, gearset, shifter, and date-code matrix is not.
rear axle While the factory 401 rear axle ratio matrix (including standard and optional ratios for 4-speed manual, automatic, and automatic with Go Package, plus dealer kit ratios) is fully documented via the 1972 passenger-car AMA specifications form, verifying an individual vehicle's original ratio, axle code stampings, and casting date codes still requires car-specific physical inspection or original documentation (such as a build sheet, window sticker, or door tag).
brakes Go Package power front discs and rear drums are recorded, but every base path, size, casting, line, and package interaction is not.
suspension The independent front, leaf-spring rear, and Go Package handling paths are recorded, but every spring, shock, bar, and steering part number is not.
option packages AMX, 401, Go Package, and Cardin boundaries are recorded, but the full option-code, restriction, combination, and price matrix is not.
production Javelin, AMX, and AMX 401 totals are recorded, but transmission, package, paint, and interior splits are unavailable.
paint colors The 19-color palette is recorded, but special-order finishes and color production totals are not.
trim and appearance Major AMX and Go Package appearance paths are recorded, but every stripe, roof, wheel, molding, and accessory combination is not.
interior The vinyl, corduroy, and Pierre Cardin paths are recorded, but every trim code and exterior-color compatibility combination is not.
authenticity markers Core AMX, engine, transmission, paint, and package checks are recorded, but complete component-date and assembly-number guidance is not.