Classic Muscle
Search cars, engines, parts...

Search Classic Muscle

Enter at least two characters to search the archive.

Enter at least two characters to search the archive.

Muscle car

1968 Plymouth Road Runner 426 Hemi

Muscle car powered by Chrysler 426 Street Hemi V8.

1968 Plymouth Road Runner green hardtop rear view; representative Road Runner exterior context.
Powertrain 426 Street Hemi, dual four-barrels, 425 advertised horsepower
Make/model Plymouth Road Runner
Engine trim 426 Hemi factory engine option
Coverage Factory Hemi Road Runner coverage with source-backed records and caveats for individual-car proof

Story

1968 Plymouth Road Runner 426 Hemi

The 1968 Road Runner was Plymouth's back-to-basics B-body performance car: Belvedere-based, deliberately plain, and built around the idea that buyers wanted engine, gearing, tires, and attitude more than luxury trim. The factory Hemi version is the sharp end of that formula. It kept the Road Runner identity and paired it with Chrysler's 426 Street Hemi, dual four-barrel carburetion, 425 advertised horsepower, and the heavy-duty driveline expectations that make real cars paperwork-sensitive today.

The safest public read is narrow. A 1968 Hemi Road Runner should be treated as a factory Road Runner ordered with the 426 Hemi option, not as a generic 383 car with badges or later engine swap. Factory-style references support both four-speed and TorqueFlite availability, F70-14 tire context for 426/440 cars, Road Runner heavy-duty suspension/shock identity, Sure-Grip rear axle options, and Road Runner-specific appearance items such as the beep-beep horn, cartoon emblems, body accent stripes, and optional black hood treatment.

Authentication still belongs to car-level evidence. VIN, fender tag, broadcast sheet, original paperwork, engine and transmission stampings, axle tags, and component dates matter more than captions, paint, or show labels. The gallery uses licensed representative 1968 Road Runner media and reviewed Hemi videos as visual context; it does not claim every photographed car is an original Hemi example.

1968 Plymouth Road Runner at Les chauds vendredis; representative front/exterior context.Bull-Doser via Wikimedia Commons · Public domain

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

  • Auction sale $87,000

    Apr 5, 2022 · Bring a Trailer

    J-code four-speed coupe RM21J8G254139 with numbers-matching engine and transmission, window sticker, broadcast sheet, Wise inspection, older factory-color repaint, replacement carpeting, added gauges, and several non-date-correct components. · modified · unknown Bring a Trailer records an $87,000 sale. VIN-stamped drivetrain components and multiple documents support the factory Hemi/four-speed identity. The older repaint, replacement carpeting, added gauges, and non-date-correct components keep the observation in modified state despite its numbers-matching drivetrain.
  • Auction sale $76,000

    Nov 10, 2020 · Bring a Trailer

    J-code automatic coupe RM21J8A225551 with Galen Govier report, replacement 426 Hemi, 2013 refurbishment and sheet-metal repair, repaint, 17-inch wheels, and visible cosmetic and corrosion issues. · modified · unknown Bring a Trailer records a $76,000 sale. The J-code VIN and Galen report support factory Hemi identity, while the replacement engine, body repair, refurbishment, repaint, and larger wheels make this a modified comparison rather than a drivetrain-original benchmark.
  • High bid $60,714

    Mar 5, 2019 · Bring a Trailer

    J-code four-speed coupe RM21J8G214236 with fender-tag support, a replacement-dated Hemi block, older Electric Blue repaint, added vinyl top, replacement upholstery, mag wheels, and an inoperative tachometer. · modified · unknown Bring a Trailer records a $60,714 reserve-not-met high bid. The VIN and fender tag establish the factory Hemi/four-speed pathway, while the replacement engine, repaint, added top, upholstery, and wheel changes require a modified classification. This is a no-sale signal, not a transaction price.

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.

Transmission

  • Factory transmission 4-speed manual
  • Factory transmission TorqueFlite automatic

Options

Paint

1968 Plymouth Road Runner at Ottawa Classic & Custom Car Show; visual context for model trim.Bull-Doser via Wikimedia Commons · Public domain

Chassis

Authenticity

1968 Plymouth Road Runner at an all-Mopars show; restored front/exterior context.Greg Gjerdingen from Willmar, USA via Wikimedia Commons · CC BY 2.0
  • Factory Hemi Road Runner identity Road Runner body with factory 426 Hemi order evidence rather than a later swap or badge-only conversion · VIN, fender tag, broadcast sheet, original invoice, engine pad/casting evidence, transmission stamp, axle tag, and ownership history · fraud detection
  • 426 Hemi drivetrain evidence 426 CID dual-four-barrel Hemi with car-correct drivetrain dates and transmission/axle evidence · Engine pad, block casting/date, carburetor tags, transmission stamp, fender tag, broadcast sheet, and paperwork · numbers matching
  • Road Runner model equipment Road Runner identification, cartoon emblems, beep-beep horn, simulated scoop hood, wider wheels, heavy-duty suspension, and trim consistent with factory equipment · Exterior/interior inspection cross-checked against fender tag, broadcast sheet, and original literature · trim correctness
  • Dana 60/Sure-Grip axle evidence Hemi axle ratio and limited-slip evidence consistent with transmission and order records · Axle tag/stamp, broadcast sheet, fender tag/order paperwork, and service records · numbers matching

Codes & names

Names & Engine Codes

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

1968 Plymouth Road Runner in a community mobile car-show setting; public history context.Greg Gjerdingen from Willmar, USA via Wikimedia Commons · CC BY 2.0
426 Hemi Chrysler 426 Street Hemi V8
426-cubic-inch Hemi Chrysler 426 Street Hemi V8
HEMI Chrysler 426 Street Hemi V8
426 Hemi V-8 Chrysler 426 Street Hemi V8
426 CID Dual 4-Barrel Hemi V-8 Chrysler 426 Street Hemi V8

Photo and video gallery

Gallery

5 photos and videos

Sources & Documentation

Explore more Related cars & components 11 links