The Auburn Auction

Lot 9
1966 Pontiac GTO Convertible


Selling on Saturday Evening

1966 Pontiac GTO Convertible

CHASSIS NO: 242676B126209

• 389 three two-barrel Tri-Power engine
• Factory four-speed transmission
• Posi-traction rear differential
• Comprehensive show quality restoration
• Correct Rally I wheels with radial red-line tires
• Rally gauges and woodgrain sport steering wheel


389 cid V-8 engine with three Rochester Two Jet two-barrel carburetors, 360 HP, four-speed manual transmission, independent front suspension with coil springs, live rear axle with semi-elliptic leaf springs, four-wheel drum brakes; wheelbase: 115”


The birth of the American muscle car (defined by a large engine in a mid-size car) began in late 1963. Under the direction of John Z. DeLorean, the 389 cubic-inch V-8 powered GTO, was introduced as a performance option for the Pontiac Tempest. The entire GTO project circumvented GM’s prohibition of installing an engine over 330 cubic inches in their intermediate models, making the car a factory hot rod, or as it later became to be known as, a muscle car. DeLorean sent word about the GTO out to the Pontiac dealer network, receiving 5,000 orders before the GM brass even learned of the car’s existence, according to legend. With such a strong positive response from the dealers, GM had to approve the GTO for production, despite the cubic-inch policy. It proved to be successful as Pontiac would go on to sell 32,540 GTOs in 1964 and helped to cement DeLorean’s reputation in the industry. Big-car power in a medium-sized package made for exhilarating performance, with Car & Driver magazine achieving a 0-60mph time of 4.6 seconds and the standing quarter-mile in 13.1s/115.0mph with a 348 horsepower, manual transmission example, figures that put many a more esteemed - and more expensive - purpose-built sports car to shame. By 1966, the GTO had been designated as its own specific model within Pontiac’s lineup. Fittingly, it was restyled with a slightly more curvaceous design, and it would gain what would become known as “Coke bottle” styling cues for its body lines. The standard 389 cubic-inch engine was tuned to produce 335 horsepower, but the most desirable option was the “Tri-Power” setup, which had triple two-barrel carburetors that could bring horsepower to 360, making this high-powered version a fierce competitor on drag strips across America. 1966 was the last year the iconic “Tri-Power” carburetion would be available on all GM cars, excluding the Corvette.

This 1966 GTO convertible has been treated to an exhaustive, correctly coded, highly detailed, every nut and bolt and correct restoration. From the factory-original style plug wires, clamps and hoses under the hood to the correct dual exhaust system with proper mufflers, resonators and exhaust tips, this performance Pontiac is a show-stopping stunner. The close attention to detail during restoration can be seen and appreciated in every part of this exceptional GTO. Equipped with a host of factory options geared with performance in mind: the potent combination of the 360 horsepower, 389 cubic-inch engine with the legendary three two-barrel, Tri-Power carburetion system and Muncie four-speed manual transmission with Hurst shifter. Additionally, it is optioned with a posi-traction rear differential, tachometer with rally gauges, woodgrain sport steering wheel, center console and red-line radial tires mounted on factory Rally I wheels. Finished in its original code B Blue Charcoal body color with contrasting black interior and convertible top, this handsome GTO checks all the right boxes, not only for its highly desirable option list, but also for the extreme care and high quality of its restoration.

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