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Pony car

1973 Plymouth Cuda

Pony car powered by 1973 Cuda 318/340 LA V8 range.

1973 Plymouth Cuda front three-quarter view with performance hood, body-side stripe, vinyl roof, and factory-style wheels
Factory model Cuda 2-door hardtop, body code BS23
Engines 318 two-barrel standard; final-year 340 four-barrel optional
340 rating 240 SAE net hp at 4,800 rpm; 295 lb-ft at 3,600 rpm
Dimensions 108-inch wheelbase; 193 inches long and 75.6 inches wide
Reported production 9,305 Cudas; an alternate 10,626 figure remains unresolved
Reported base price $3,033

Story

The 1973 Plymouth Cuda was the performance model in a two-model Barracuda family. Its BS23 hardtop identity brought bucket seats, the performance hood, black rear panel, bright moldings, heavy-duty chassis equipment, and power front disc brakes. Federal bumper rules added substantial front guards and reinforcement, giving the final 340 model year its unmistakable face.

The standard engine was the E44 318 two-barrel, rated at 150 SAE net horsepower and 265 lb-ft. The E55 340 four-barrel remained optional for its final Cuda season, with 240 net horsepower, 295 lb-ft, electronic ignition, low-restriction intake and dual-exhaust equipment. A floor-shift three-speed was standard. The 340 alone could be paired with the A833 four-speed and pistol-grip shifter; TorqueFlite was available with either engine.

Both engines used an 8 3/4-inch rear axle. Ratios depended on engine and transmission, while the 340-only A36 package brought a 3.55 Sure-Grip, 26-inch radiator, fan shroud, and a power-steering cooler when applicable. The Cuda combined torsion-bar front suspension, leaf springs, anti-sway equipment, front discs, rear drums, and model-specific wheel and tire schedules. Paint, stripe, vinyl-roof, wheel, console, instrument, and upholstery choices made individual cars look very different without creating separate models.

One secondary series reports 9,305 Cudas: 2,722 with the 318 and 6,583 with the 340, with its manual and automatic subtotals reconciling exactly. Hemmings reports 10,626 instead. Because no reviewed factory ledger resolves that disagreement, the page labels the 9,305 series as reported and preserves the alternate number as an open evidence limit. VIN, fender tag, broadcast sheet, body stamps, drivetrain identifiers, dates, and ownership records must agree before badges, hood treatment, paint, or a replacement engine can establish an individual car's original build.

1973 Plymouth E-body front three-quarter view in a stock-appearing show presentation; display details do not replace the car's recordsGreg Gjerdingen via Wikimedia Commons · CC BY 2.0

Price history

Values

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

Original Price

Market Observations

  • Auction sale $36,000

    Aug 31, 2025 · Bring a Trailer

    BS23H3B547991, originally H-code but sold with a replacement 383. · modified · good Completed modified-car sale; not treated as a stock 340 benchmark.
  • Auction sale $49,500

    Jul 26, 2024 · Mecum Harrisburg

    BS23H3B332808, 340 automatic in B5 blue. · restored · excellent Completed sale retained as an exact-car observation, not a universal 340 value.
  • Auction sale $60,500

    Feb 9, 2024 · Bring a Trailer

    BS23H3B340791, 340 four-speed with window sticker and broadcast sheet. · survivor · excellent Completed sale; service replacements and exact-car originality claims remain disclosed rather than normalized away.
  • Auction sale $39,600

    Mar 24, 2021 · Barrett-Jackson via Hagerty

    BS23H3B312165; archived exact-car result. · restored · excellent Reported completed sale; condition and restoration claims remain those of the auction record.

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

  • Standard 318 E44 318 two-barrel, 150 SAE net hp at 3,600 rpm and 265 lb-ft at 2,000 rpm · Standard 1973 Cuda engine; fifth VIN character G · engine assembly / specification
  • Optional final-year 340 E55 340 four-barrel, 240 SAE net hp at 4,800 rpm and 295 lb-ft at 3,600 rpm · Optional 1973 Cuda engine; fifth VIN character H · engine assembly / specification
  • Factory induction 318 two-barrel; 340 Carter Thermo-Quad four-barrel with low-restriction air cleaner · Engine-dependent factory equipment · carburetor / specification
  • Electronic ignition Factory electronic ignition on both documented V8 paths · 1973 Cuda 318 and 340 · ignition / specification
  • Carter BBD 318 applications 6316S-SA manual or 6317S-SA automatic; California 6343S-SA manual or 6344S-SA automatic · 1973 Barracuda/Cuda B-series among the listed 318 applications; verify transmission, emissions system, date, and installed unit · carburetor / carburetor list
  • Carter Thermo-Quad 340 applications 6318S-SA manual or 6319S-SA automatic; California 6339S-SA manual or 6340S-SA automatic · 1973 Barracuda/Cuda B-series among the listed 340 applications; verify transmission, jurisdiction, date, and installed unit · carburetor / carburetor list

Transmission

  • Factory transmission 3-speed floor-shift manual
  • Factory transmission A833 4-speed manual with pistol-grip shifter for the 340
  • Factory transmission TorqueFlite 3-speed automatic

Options

318 and 340 engine choices for the 1973 Plymouth CudaClassic Muscle · Reference illustration

Paint

1973 Plymouth Cuda showing its grille, performance hood, stripe, vinyl roof, and road-wheel presentationCalreyn88 via Wikimedia Commons · CC BY-SA 4.0

Appearance

1973 Plymouth E-body front view showing the model-year grille, bumper guards, hood treatment, and stanceGPS 56 via Wikimedia Commons · CC BY 2.0

Interior

Chassis

Production

Manual, automatic, and performance-axle choices for the 1973 Plymouth CudaClassic Muscle · Reference illustration

Authenticity

Torsion-bar chassis, heavy-duty suspension, and brake equipment for the 1973 Plymouth CudaClassic Muscle · Reference illustration
1973 Plymouth Barracuda 340 in Lemon Twist, retained as weathered-car and restoration context rather than a finish-standard exampleElise240SX via Wikimedia Commons · CC BY-SA 4.0
  • Model and body identity BS23 identifies the Cuda two-door hardtop; the sixth VIN character is 3 for model year 1973 · VIN plate, fender tag, broadcast sheet, title history, body stamps, and factory paperwork · fraud detection
  • Engine identity G in the fifth VIN position supports the 318 path; H supports the 340 path · VIN, fender tag, broadcast sheet, window sticker, engine pad and castings, and dated records · numbers matching
  • Engine assembly and dates Block casting and pad, assembly date, carburetor, ignition, intake, and exhaust should agree with the scheduled build and engine path · Engine block, carburetor identifiers, distributor, exhaust, broadcast sheet, and restoration history · date correctness
  • Transmission and axle agreement Three-speed, A833, or TorqueFlite plus ratio and Sure-Grip status must match the car's records and assembly identifiers · Fender tag, broadcast sheet, transmission stamp, axle tag and stamp, shifter, linkage, and service records · numbers matching
  • Paint, trim, and cabin agreement Paint, stripe, vinyl roof, hood, wheels, upholstery, console, and instrument choices should reconcile as one factory order · Fender tag, broadcast sheet, window sticker, protected paint, trim codes, body openings, and interior components · trim correctness
  • Document chain VIN, fender tag, broadcast sheet, window sticker, body numbers, drivetrain dates, and ownership history should agree · Original records, title chain, inspection report, body stamps, component identifiers, and restoration invoices · fraud detection

Still Researching

  • engine Factory specifications establish both engines, but complete casting, assembly, carburetor-number, and effective-date matrices were not recovered; factory 340 compression figures also differ between 8.4:1 and 8.5:1.
  • transmission Factory availability and ratios are documented, but complete case, tag, assembly, and date-code references remain unresolved.
  • rear axle Factory records now document the Barracuda 8 3/4-inch housing package, carrier architecture and casting identifiers, 29-tooth axle splines, ratio-tag location, and applicable service gear sets. Exact production assembly codes, complete shaft dimensions and part numbers, build dates, running revisions, and an individual car's original installation remain unresolved.
  • brakes Factory layout, dimensions, and key Barracuda-applicable housing, hub/disc, adapter, lining, hose, master-cylinder, warning-tee, rear-drum, rear-cylinder, and power-disc package service numbers are documented; complete supplier, side, engineering-number, effective-date, and supersession schedules remain unresolved.
  • suspension The E-body layout and 340 heavy-duty path are documented, but factory sections do not fully reconcile the rear anti-sway-bar boundary and complete component numbers remain unresolved.
  • option packages The exact-year factory data book's listed standard, extra-cost, package, and dealer-installed choices are represented, but it explicitly is not a complete order guide and does not resolve every sales code, price, restriction, cancellation, regional rule, or running revision.
  • production A 9,305-car secondary series reconciles its engine and transmission splits, while Hemmings reports 10,626 Cudas; no reviewed factory ledger resolves the difference.
  • paint colors The factory selector documents the palette and major combinations, but midyear effective dates and every paint-roof-stripe exception require further review.
  • trim and appearance Standard and optional appearance equipment is documented, but complete delete, substitution, bumper-running-change, and parts details remain unresolved.
  • interior Factory A6 color codes and principal choices are documented, but complete material, grain, hardware, and date-change details remain unresolved.
  • authenticity markers The model and engine boundaries are documented, but each car requires its own VIN-safe tags, body numbers, drivetrain stamps, dates, and documentary chain.

Codes & names

Names & Engine Codes

Common names and codes are grouped so LS6 references point to the same engine, not separate pages.

Interior, paint, stripe, roof, and wheel choices for the 1973 Plymouth CudaClassic Muscle · Reference illustration
1973 Cuda 318/340 engine range 1973 Cuda 318/340 LA V8 range
1973 Plymouth Cuda 318 and 340 1973 Cuda 318/340 LA V8 range
BS23 G/H engine range for 1973 1973 Cuda 318/340 LA V8 range
1973 Cuda engine choices 1973 Cuda 318/340 LA V8 range

Photo and video gallery

Gallery

3 photos and videos

Sources & Documentation

Reader contributions

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