Engine Number

Data Plate

National First Prize Winner

Engine Date Code

Engine & Trunk Photos:

Rare Tri Power Example

Interior Photos:

YouTube Video:


1958 Pontiac Bonneville Tri-Power Convertible
Matching #'s Powerful Tri-Power Engine
Senior National First Prize Winner AACA

Luxuriously Appointed

Extremely Rare

Body Style: 2dr Convertible
Engine: 8-cyl. 370cid/330hp 3x2bbl
VIN: P558H1045
Exterior Color: Mallard Turquoise (White and Chrome trim)
Interior Color: Two Tone
Transmission: 4-Speed Hydra-Matic Transmission 

History of the 1958 Pontiac Bonneville:
The Pontiac Bonneville became its own line in 1958, having been promoted from a performance upgrade on the 1957 Star Chief. The 1958 Bonneville was built on the same chassis, but as a true performance model.

With this model being a candidate for the first true Pontiac muscle car, Bonneville buyers got a lot of power for their money. The base engine was a 370-cid, 255-hp V-8 with a Carter four-barrel carburetor and standard 3-speed manual transmission — or 285 horsepower with the optional Super Hydramatic automatic. Upgrade opportunities included Rochester fuel injection or a Tri-Power setup consisting of three Carter two-barrel carburetors, 10.5:1 compression heads, and a performance camshaft. 

On the outside, the Pontiac Bonneville carries the same space-age styling as the rest of the 1958 Pontiac lineup. It’s an attractive car available in two-tone paint with plenty of chrome. Options are typical for a car of this era with amenities such as a foam seat, power everything, air conditioning, and so on. Unique to the Bonneville, buyers could order the car with bucket seats — another indicator of the proto-muscle car design.

Collectors considering the 1958 Pontiac Bonneville have a choice between the coupe and the convertible. Of the two, convertibles amounted to approximately a quarter of the total production of cars. Most of these cars were delivered with automatic transmission, although there is evidence that at least one car was built with a special four-on-the-floor transmission for Daytona racing. Collectors will want to search for well-optioned cars featuring Tri-Power or Rochester fuel injection. 

About this Car:
​This Extremely Rare Matching #'s Bonneville Tri-Power won National First Price in the Senior Division of the AACA and wears that Badge on its grille. Equipped with a Powerful Tri-Power 370 CID OHV V-8 Engine; Triple 2-barrel carburetors, 10.5:1 compression heads, and a performance camshaft. 4-Speed Hydramatic Transmission. 4-Wheel Drum Brakes. Front Independent Suspension with Coil Springs. Rear Live Axle Suspension with Coil Springs.

Luxuriously appointed with the following options: De Luxe Electramatic “Wonder Bar” Radio. Automatic Electric Antenna. Under seat heater and defroster. Custom Lounge Latex Foam Cushioning (Front Only). Latex Foam Cushion (Rear Seat). Cushioned Instrument Panel. Dual Exhausts. Power Window Lifts. Power Brakes. Power Top. Courtesy Lamp. Single Rear Speaker. Seat Belts. Tissue Dispenser. Rearview Compass. Luggage and Utility Lamp. Dual Back-Up Lamps. Driver side and Passenger side Outside Controlled Spot Lamp Mirrors. Electric Clock. White Sidewall Tires. Factory Custom Wheel Discs. Delicate spears and stars that adorn the beltline moldings and rear fenders. 4 Bucket Seats. Spare Tire and Jack.

Per Gooding & Company this car was acquired in the late 1990s by noted collector Jim Mangione who displayed it in his impressive collection of American classic cars.  In 2001, Mr. Mangione sold this Bonneville convertible to Erich Traber of Switzerland, who probably kept the car within the US. In 2005 it was sold to another owner who thoroughly prepared the beautiful cosmetic presentation of the car. The car is currently coming out of an amazing Southern California Collection for the first time in many years where it has been well cared for and in good company. 

Price: $ 'SOLD'
Ready for immediate worldwide delivery

Please contact (+1) 619-777-3659 for more information 

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