1. 1966 Pontiac GTO 'Tri-Power' Hardtop

  2. 1966 Pontiac GTO 'Tri-Power' Hardtop

  3. 1966 Pontiac GTO 'Tri-Power' Hardtop

  4. 1966 Pontiac GTO 'Tri-Power' Hardtop

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  15. 1966 Pontiac GTO 'Tri-Power' Hardtop

  16. 1966 Pontiac GTO 'Tri-Power' Hardtop

Lot Number
69
1966 Pontiac GTO 'Tri-Power' Hardtop
Scottsdale Auction

Offered Without Reserve

ESTIMATE: $35,000 - $55,000
CHASSIS NO: 242176P132960
• Accompanied by PHS documentation
• Provided the foundation of the muscle car movement
• Transmission and engine rebuilt to factory specs
• Highly desirable color combination
• Well-maintained and road ready

ADDENDUM: PLEASE NOTE: This car is equipped with a factory numbers-matching two-speed Hydra-Matic automatic transmission.

389 cid V-8 engine, 365 HP, two-speed Hydra-Matic automatic transmission, rear-wheel drive, four-wheel drum brakes, independent front suspension, rear live axle suspension with coil springs; wheelbase: 115”


The Pontiac GTO is widely recognized today as one of the most significant performance machines of the muscle car era. Originally seen as an option on the Tempest, it was available in a coupe, hardtop, and convertible body style. It was not until 1966 that the GTO became its own separate model within the Pontiac Brand. It was in this year that the entire GM “A” body lineup was restyled with hiked up rear fender lines and a tunneled backlight. 1966 GTOs featured a standalone louvred taillight cover which was unique to that year. A slight increase in size lengthened the GTO, helping it to appear visibly different from its Tempest option predecessors. The addition of bucket seats, sleeker curves, and a redesigned instrument panel all helped to foster more of a street-racing, muscle car image for the GTO. Other options included a powerful 389 cubic-inch V-8 engine, premium tires, special hydraulic lifters, dual exhaust, a three- or four-speed transmission, a heavy-duty clutch, improved suspension, a 3.23:1 rear axle ratio and, of course, GTO badging. Depending on its configuration, the 389 cubic-inch engine was capable of producing anywhere from 325-365 horsepower and an astonishing 428 foot-pounds of torque. Placing this powerful engine in a mid-size car created a vehicle that was pretty much unmatched for performance. It was available in both the hardtop coupe or convertible body styles. Pontiac sold nearly 32,500 GTOs during the first production year; a testament to the popularity of this intense racing machine.

The 1966 Pontiac GTO offered here flawlessly embodies the idyllic spirit of the muscle car generation. With a gorgeous coat of red paint that has been polished to a mirror shine, this car looks picture-perfect riding on Goodyear Polyglas white letter tires and rally wheels. The chrome shines brilliantly in the summer sun. After a 2011 rebuild to factory specifications, the Tri-Power 389 V-8, with three two-barrel Rochester 2G carburetors easily produces a whopping 365 horsepower. No need to worry about shifting in this ride, as it comes equipped with the original Hydra-Matic fully automatic transmission and gears, all rebuilt to factory specifications, of course. A long list of recent mechanical upgrades on this GTO includes the addition of a high torque starter, a four-core radiator and electric fan, a FloKooler water pump, Pertronics electronic ignition, a Delco Moraine brake booster with new drums, brakes, and cylinders, and a PowerMaster 100-amp billet polished alternator. The interior of this GTO is equally as good-looking as the rest of the car. A beautiful pecan woodgrain dash contrasts perfectly with the black headliner and seats inside this stunning piece of American muscle.

To this day, Pontiac’s GTO remains a highly respected legend in the muscle car arena. Throughout its fairly short 10-year lifespan, the original GTO went through a rapid evolution. 1970 marked the last year for the GTO as an independent model and, by 1972, the convertible and “Judge” option package also disappeared. In 1974, after two years of rapidly declining sales, the GTO faded into history. Increased government regulation, rising insurance premiums, and the instability of the Oil Embargo all contributed to the end of the muscle car era and thus the demise of the GTO. Thankfully, this 1966 GTO presents the perfect opportunity to scoop up one of these street demons. This car characterizes a very refined example which has been tastefully upgraded while still placing huge emphasis on originality and respect for the brand. It's an early performance car from the 1960s that has it all, speed, styling and quality - all of the things one could ever want from Pontiac’s ‘King of the Hill.’

1966 Pontiac GTO 'Tri-Power' Hardtop
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