The 1967 Plymouth GTX was originally marketed as the “gentleman’s muscle car,” a sophisticated B-body that refused to compromise on performance. This particular example, located in Middletown, Connecticut, takes that ethos to a new level by retaining its factory-correct Silver Metallic appearance while concealing a massive 505-cubic-inch stroker engine. Built from the car’s original 440 block, the mechanical heart of this Mopar has been internally transformed into a high-torque monster. Beyond the power, the vehicle is supported by an impressive array of factory documentation, including two broadcast sheets and the original window sticker, ensuring its pedigree matches its formidable street presence.
Silver Metallic Precision with Upgraded Chrome Road Wheels
The exterior of this GTX has been repainted in its correct factory hue of code-A Silver Metallic, a choice that emphasizes the clean, architectural lines of the 1967 hardtop. While the original window sticker denotes extra-cost sport stripes, they were omitted during the restoration to maintain a sleeper aesthetic. The car features an extra-cost tinted windshield and presents a nearly flawless profile, save for a minor ding in the decklid trim. It sits with an aggressive but period-perfect stance on upsized 15-inch chrome-plated road wheels, which are wrapped in BFGoodrich Silvertown redline radials that provide modern grip while honoring the car’s 1960s heritage.
Premium Blue Vinyl Cabin with Integrated Modern Audio
Inside, the rare code-P6B premium blue vinyl interior creates a seldom-seen color combination against the silver bodywork. The bucket seats and door panels have been redone in the stock patterns, though the seller notes a minor half-inch tear in the rear seat and slight peeling on the driver’s door panel. A pair of new interior door panels is included to address this detail. The cockpit remains highly original, featuring the factory tachometer, console, and center-mounted clock. While the dashboard retains its factory AM radio, a modern Pioneer stereo system has been discreetly hidden in the glove box to provide high-quality sound without altering the vintage aesthetics.
Stroked Five-Oh-Five Super Commando V-8 Authority
The original 440-cu.in. block was over-bored to 4.350 inches and fitted with an Eagle 4.250-inch stroker forged-steel crankshaft to achieve its current 505-cubic-inch displacement. This setup utilizes Diamond forged-aluminum pistons and a Competition Cams hydraulic camshaft to deliver massive torque through a 727 TorqueFlite three-speed automatic transmission enhanced by a B&M shift kit. The engine breathes through ported heads with stainless-steel valves and a custom dual exhaust system featuring FlowMaster mufflers and chrome oval tips. Power is sent to an 8.75-inch Sure-Grip rear axle with 3.55:1 gearing, providing a visceral mechanical feel that is far more potent than the original factory rating.
| Technical Specifications | |
|---|---|
| Engine Displacement | 505-cu.in. OHV V-8 (Stroked 440) |
| Crankshaft | Eagle 4340 Forged-Steel Stroker |
| Transmission | 727 TorqueFlite with B&M Shift Kit |
| Rear Axle | 8.75-inch Sure-Grip with 3.55:1 Gears |
| Braking System | Power-Assisted 4-Wheel Disc Brakes |
| Steering Box | Borgeson Power Steering Box |
| Wheels | 15-inch Chrome Plated Road Wheels |
Documented History and Rebuilt Chassis Dynamics
The mechanical restoration of this GTX extends deep into the chassis, where the heavy-duty torsion bar front suspension has been completely rebuilt and augmented with polyurethane anti-roll bar end-links. The rear leaf springs were replaced and fitted with shocks featuring helper springs to manage the increased power of the 505 V-8. Braking performance is significantly modernized via a power-assisted four-wheel disc conversion, while a Borgeson power steering box replaces the original linkage for tighter response. The sale includes an extensive documentation package consisting of the window sticker, two broadcast sheets, punch cards, and the owner’s manual, providing an airtight history for this Connecticut-based Mopar.
A Masterful Marriage of Factory Heritage and Stroker Power
This 1967 Plymouth GTX is a compelling choice for the collector who demands both historical paperwork and modern performance. By preserving the original engine block and stock-appearing Silver Metallic finish, it honors the legacy of the GTX nameplate while providing a level of acceleration and braking performance that the original engineers could only imagine. The rare blue vinyl interior and the exhaustive list of factory documents make it a standout in a market often crowded with undocumented clones. It is a fully sorted, big-block powerhouse that remains true to its gentleman’s muscle car roots while packing a championship-grade punch.
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Source: hemmings.com
