1970 Plymouth GTX 440 Six-Barrel

Description

Plymouth introduced the Belvedere GTX hardtop and convertible submodels in 1967, marketing the new GTX as a "gentleman's muscle car" that featured both luxury and power. By the following year, having firmly established itself in the muscle car market, the car dropped the Belvedere reference, was simply called the Plymouth GTX, and received a new hourglass body design. 

Following minor cosmetic changes in 1969, the 1970 GTX received a new grille and taillight design, made the "Air Grabber" hood (with a functional air intake system) a standard feature, and discontinued the convertible option. The engine continued to be the 440 cubic-inch V8, known as the "Super Commando 440," which could be upgraded to a six-barrel V-code for additional horsepower. For those seeking even more power, Plymouth offered the optional 426 cu-in Hemi V8. 

Due to the success of the more affordable Plymouth Road Runner, which shared the same platform but offered fewer luxury features, only 7,748 GTX models were produced in 1970 compared to 43,404 Road Runners, meaning surviving GTXs are more than five times less common. And this one — wearing Rallye Red paint and powered by a V-code Super Commando 440 with a three-speed automatic transmission — is a low-mileage example showing only 40,415 miles, believed original. 

Highlights 

• 1970 Plymouth GTX two-door hardtop coupe showing 40,415 miles, believed original 

• Powered by a numbers-matching, V-code 440 cu-in V8 with 3x2 Six-Barrel rated at 390 hp and 490 lb-ft of torque 

• TorqueFlite A727 three-speed automatic transmission 

• One of only 328 V-code GTXs with an automatic gearbox (1970 GTX Registry) 

• Refinished in its original color of Rallye Red with White Rallye side stripe over black vinyl upholstery with patterned seat inserts 

• Optional "Tic-Toc-Tach" combining a 6,000-rpm tachometer and clock 

• The chassis number (RS23V0E130523) decodes as: 

  • R – Belvedere platform 

  • S – Special 

  • 23 – Two-door hardtop coupe 

  • V – 440 cu-in V8 Six-Barrel 

  • 0 – 1970 model year 

  • E – Los Angeles assembly plant 

  • 130523 – Sequential production number 

Features 

• The data plate decodes as: 

  • N96 – Air Grabber hood 

  • R22 – AM radio with 8-track 

  • V08 – Vinyl roof delete 

  • Y14 – Sold car (pre-ordered) 

  • U25 – Map and courtesy lights 

  • L31 – Fender-mounted turn signals 

  • M21 – Roof drip rail moldings 

  • N41 – Dual exhaust 

  • N42 – Chrome exhaust tips 

  • N85 – Tachometer 

  • FE5 – Rallye Red paint 

  • A01 – Light package 

  • B51 – Power front disc brakes (rear drum) 

  • C16 – Console 

  • C55 – Bucket seats 

  • G33 – Left-hand mirror 

  • P6XA – Premium vinyl bucket seats in black 

  • 130 – Built 20th day of January 

  • E87 – 440 cu-in 3-2bbl hi-performance engine 

  • D32 – A727 automatic transmission 

  • RS23 – Plymouth Belvedere two-door hardtop 

  • VOE – Los Angeles assembly 

  • 130523 – Sequential production number 

• Factory 14-inch Magnum 500 wheels 

• Goodyear Polyglas G70-14 tires 

Known Imperfections 

• Minor paint chips up front 

• Ding on rear trim above driver’s side taillight 

• Steering wheel is cracked 

• Crack (repaired) in woodgrain dash 

• Headliner has a tear and a small puncture hole 

• Tic-Toc-Tach and radio are inoperable 

• Side glass has minor marks 

• Light surface rust under liner in trunk 

Included 

• Spare tire 

• Jack and lug wrench 

• GTX floor mats 

Ownership History 

The Arizona seller of this 1970 Plymouth GTX has owned it since April 2024. He says, “This nicely equipped GTX has spent decades in several private collections. The drive train is all original with numbers-matching engine and transmission. The car has had one respray in the past, and the paint is in overall excellent condition.”