The Milhous Collection

24-25 February 2012

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Lot 802

1958 Pontiac Bonneville Super Deluxe Sport Coupe

  • Chassis no. C558H3252
  • Body no. BC1445

Sold for $121,000

Series 25. 300 bhp, 347 cu. in. OHV V-8 engine, four-speed Hydra-Matic transmission, independent coil spring front suspension, live rear axle with trailing arm coil spring suspension, and four-wheel hydraulic power drum brakes. Wheelbase: 122"

• Prestigious early Bonneville coupe

• 300 bhp Tri-Power engine

• Highly-accessorized with such features as Trans-Portable radio

Your father might have driven an Oldsmobile, but the Pontiac probably belonged to your grandfather. All that changed in the 1950s when Pontiac truly became a performance marque. At the end of the 1954 model year, Pontiac retired both its six and straight-eight engines. For 1955, all cars had V-8 overhead-valve powerplants that shared some heritage with the small-block Chevy. In mid-year, a $35 Power Pack option added a four-barrel Rochester carburetor, pushing horsepower to 200 on Hydra-Matic cars.

For 1956, the engine was enlarged to 317 cubic inches, and a dual four-barrel option developed a hefty 285 bhp. Only about 200 cars were so-equipped. The 1957 model year brought another displacement increase, to 347 cubic inches. A special Bonneville convertible was released in the Star Chief line, using Rochester fuel injection. This engine was rated at 315 bhp. Just 630 were built. It was, however, not the most powerful 1957 Pontiac. In December 1956 a NASCAR Tri-Power option was introduced with three two-barrel carburetors.

In an uncharacteristic move, General Motors introduced new bodies and chassis for all 1958 cars. In this shuffle, Pontiac made the Bonneville a separate series, comprising a convertible and a hardtop coupe. Standard engine was a 285 bhp, four-barrel V-8, but fuel injection and Tri-Power were still available. Very few injected cars were built, largely because the system had yet to be perfected. Performance enthusiasts generally opted for Tri-Power instead, which included three Rochester two-barrel carbs, 10.5:1 compression and a high-lift camshaft.

The Pontiac Bonneville being offered here is a well-restored, highly accessorized Super Deluxe Sport Coupe. Equipped with Tri-Power and the Strato Flite four-speed Hydra-Matic transmission, it has power steering, power brakes and power windows. It has the unusual Trans-Portable radio introduced for 1958. This radio could be removed from the car and used as a portable at home, at a picnic or on the beach. The car is also fitted with a rear speaker and rear antenna, used when the radio is plugged into the dashboard. Other accessories include rear fender skirts, a tissue dispenser and door edge guards.

The car is painted in two-tone green and remains in excellent cosmetic condition. The interior is done in matching hues of green, with the seats upholstered in a vinyl-cloth combination motif. The quality of the upholstery work is excellent, as is the headliner and dashboard.

The engine compartment is clean as is the nicely detailed trunk. Three artifacts of its earlier life remain in the rear window: two decals from the Automobile Club of Southern California and one for the Pontiac Oakland Club International. The car rides on Remington Cushion Aire C78-14 whitewall tires.

A few years later, the GTO commanded all the attention of young Pontiac buyers. In 1958, however, the performance Pontiac was very much the Bonneville, very often a Tri-Power Super Deluxe Sport Coupe like this one. It was fast, stylish and elegant, all the qualities a successful businessman looked for in a new boulevard cruiser and performance car for the daily commute.

Please contact our exclusive automotive transportation partner, Reliable Carriers, for a shipping quote or any other information on the transport of this vehicle.

Alexander Weaver

+1 864 313 6844
California, United States

Alexander Weaver joined RM Sotheby’s in 2011 as a Car Specialist after graduating from Furman University in South Carolina. Born... read more

Augustin Sabatié-Garat

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United Kingdom

Augustin Sabatié-Garat joined RM Europe in 2012 as a Car Specialist after more than a decade in the collector car hobby. Gradua... read more

Barney Ruprecht

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Ontario, Canada

Barney’s interest in classic cars began at an early age after being introduced to his father’s all-original 1965 Porsche 911. Barney l... read more

Cameron Smyth

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Ontario, Canada

Cameron Smyth joined RM Sotheby’s as a Car Specialist in 2015, working out of our corporate office and providing assistance on c... read more

David Swig

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California, United States

David Swig joined RM Sotheby’s West Coast division as a Car Specialist in May 2015. David is a life-long automobile enthusi... read more

Don Rose

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United States

Don joined RM in 2006 after several years of professionally trading sports and classic cars, and after earning a reputation as a noted... read more

Donnie Gould

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Florida, United States

Donnie Gould joined the RM team in 2002 as a partner and Car Specialist after more than two decades in the vintage automobile auction ... read more

Gord Duff

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Ontario, Canada

Gord Duff began his journey with RM Sotheby’s in 1998. Since then, he has gained an intimate knowledge of a variety of marques a... read more

Jake Auerbach

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California, United States

Jake Auerbach got his start in the automotive industry at an early age, spending his summers during high school working at a classic c... read more

Kurt Forry

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California, United States

Having worked for Bonhams’ Automobilia department for over 10 years, Kurt Forry joined RM Sotheby’s with more than a decad... read more

Matt Malamut

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California, United States

A long-time car enthusiast and Southern California native, Matt studied Automotive Technology at San Diego Miramar College and complet... read more

Michael Squire

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United Kingdom

Michael Squire joined RM Sotheby’s European Division in the summer of 2016. He comes to RM with a prestigious racing background ... read more

Mike Fairbairn

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Ontario, Canada

As one of the three founding partners of RM Sotheby’s, Mike has a long-standing interest in the classic car industry. Graduating... read more

Oliver Camelin

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United Kingdom

With an extensive background in exotic sports car history and sales, a particular passion for American curves, and fluency in three la... read more

Paul Darvill

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United Kingdom

Paul Darvill joined the RM Sotheby’s European team at the beginning of 2015. Paul holds a degree in French and Politics from the... read more

Pete Fisher

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Ontario, Canada

Pete Fisher was first introduced to antique cars in high school, working for Classic Coachworks in his hometown of Blenheim, Ontario. ... read more

Shelby Myers

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California, United States

Shelby Myers grew up with the classic car industry infused into every aspect of his life. He had the unique opportunity to watch the R... read more

Tonnie Van der Velden

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United Kingdom

Tonnie Van der Velden joined RM Sotheby’s European division in September 2015 as a Car Specialist. A lifelong enthusiast, Tonnie... read more