The Milhous Collection

24-25 February 2012

Previous Next

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.

Alain Squindo

Detroit, Michigan

Alain Squindo joined RM Auctions in 2007, after graduating from Georgetown University in Washington, D.C., with a degree in History. R... read more

Alexander Weaver

+1 310 559 4575
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

Annette Abaci

+49 (0) 40 441 95 737

With post-secondary degrees in Economic Science and Mechanical Engineering, Annette Abaci initially worked part-time at Mercedes-Benz ... read more

Augustin Sabatié-Garat

+44 (0) 20 7851 7070
United Kingdom

Augustin Sabatié-Garat joined RM Europe in 2012 as a senior car specialist, after more than a decade in the collector car hobby... read more

Barney Ruprecht

+1 519 352 4575
Ontario, Canada

Barney Ruprecht graduated from Boston University in 2013 with a degree in Hospitality Administration. In ... read more

Dan Warrener

+1 519 352 4575
Ontario, Canada

Possessing a degree in Economics from Brandon University, Dan Warrener spent the initial stages of his career working around the globe... read more

David Swig

+1 415 302 2247
California, United States

David Swig joined RM Sotheby’s West Coast division as a car specialist in May 2015. He is a lifelong automobile enthusiast and g... read more

Don Rose

+1 617 513 0388
United States

Don Rose joined RM Auctions in 2006, after many years of professionally trading sports and classic cars, and after earning a reputatio... read more

Donnie Gould

+1 954 566 2209
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

+1 519 352 4575
Ontario, Canada

Gord joined RM Sotheby's in 1998, initially responsible for the transportation and logistics of the company’s auction and re... read more

Ian Kelleher

+1 310 559 4575
New York, United States

Ian Kelleher began his automotive career immediately following his graduation from Oberlin College, with a B.A. in Politica... read more

Jack Boxstrom

+1 818 703 2816
Ontario, Canada

Jack Boxstrom joined RM Sotheby's in late-1996 to assist with the recently acquired, and subsequently record-breaking, auction in ... read more

Jake Auerbach

+1 917 213 5672
Ontario, Canada

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

Jonathan Sierakowski

+1 519 352 4575
Ontario, Canada

Jonathan Sierakowski developed a passion for classic cars while working at a restoration shop as a teenag... read more

Kurt Forry

+1 260 927 9797
Indiana, United States

Kurt Forry joins Auctions America with more than a decade of experience on the North American auction scene and a well-rounded knowled... read more

Mike Fairbairn

+1 519 352 4575
Ontario, Canada

As one of the three founding partners of RM Sotheby's, Mike Fairbairn has a longstanding interest in the classic car industry. Gra... read more

Pete Fisher

+1 519 352 4575
Ontario, Canada

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

Peter Wallman

+44 (0) 20 7851 7070
United Kingdom

Peter Wallman joined RM Europe in 2007, following nearly two decades in the international advertising industry, read more

Rob Myers

+1 519 352 4575
Ontario, Canada

As chairman and founder of the RM Group of Companies, Rob Myers’s entire career has been devoted to the classic car industry. Ro... read more

Shelby Myers

+1 310 559 4575
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

+31 653 84 19 60

Tonnie Van der Velden joined RM Sotheby’s European division in September 2015 as a car specialist. A... read more