1958 Pontiac Bonneville Tri-Power Sport Coupe

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  • Asking Price: $66,900
  • Stock Number: 181014
  • Make: Pontiac
  • Model: Bonneville
  • Transmission: Four-speed Automatic
  • Miles: 60,213
  • VIN: P558H5769
  • Title: Clear

Description Jump to top

1958 Pontiac Bonneville Tri-Power Sport Coupe 

  • This fully loaded Bonneville has the extremely rare Pontiac “inside sliding sunvisor” option
  • Reel-out trunk lamp, power steering, power brakes, day/night mirror, power electric antenna, Deluxe AM radio, windshield washers, pop-up rear armrest and dual high-fidelity rear speakers with dash switch 
  • Debut year for the Bonneville as a separate series
  • 370ci V-8 engine with correct Rochester TriPower and authentic air cleaner 
  • Four-speed Strato-Flight Hydramatic automatic transmission
  • Marlin Turquoise over Mallard Turquoise exterior
  • Mallard Turquoise/Marlin Turquoise interior 
  • Full set of T3 headlights, the Bonneville series wore an exclusive die-cast chrome grille in 1958.
  • Documentation includes a personal and confidential corporate letter to dealers about 1958 model year pricing 

For the 1958 model year, the Bonneville became a separate model. It was GM’s fiftieth year of production and so in addition to its original model, the Pontiac Bonneville had an Anniversary Edition model built. General Motors was so proud of the newly redesigned model that the car’s advertising slogan was “The Boldest Advance in Fifty Years.” The 1958 Bonneville was available as a two-door hardtop or a convertible. MotoeXotica Classic Cars has a classic Pontiac that is optioned more like an Oldsmobile or a Cadillac. We are proud to offer this 1958 Pontiac Bonneville Tri-Power Sports Coupe. The Tri-Power engine was used in the NASCAR circuits, as the Bonneville in its first year was chosen as the Official Pace Car of the Indianapolis 500.

This fully loaded Bonneville has the extremely rare Pontiac “inside sliding sunvisor” option.  Some Pontiac experts have claimed that the rarely seen inside sliding sun visor on this Bonneville is not an authorized Pontiac option – not true. As this option was displayed in the 1958 Pontiac Deluxe dealer catalog. Actually, it works quite well with one minor problem: when the visor is in the “down” position on a sunny day, sunglasses aren’t practical to wear – the driver’s front view would be too dark. But without sunglasses it’s hard to look out the rear and side windows – there’s too much glare. Apparently Pontiac realized the shortcomings of their “Panavisor,” because it was only available on the 1958 cars. By the way, a warning is printed on the bottom of the visor:
“DO NOT USE WHEN DARK” No kidding!

Manufactured in Pontiac’s assembly plant in Pontiac, Michigan. This Bonneville finished in a striking Marlin Turquoise roof and bodyside spears over Mallard Turquoise. The paint and trim are in overall excellent order but there are minor blemishes at the driver’s side door handle and on the trunklid.

The Bonneville’s exclusive side emblem promised that this was a car for the modern era of jet aircraft and rocket ships. The car’s bodywork is straight and solid, its chrome bumpers look great, included with a full set of T3 headlights, the engine bay is very tidy and it rolls on wide whitewall radials that are in very good condition, surrounding steel wheels with factory wheel covers that are in satisfactory order. The 1958 Bonneville’s body was shared with the 1958 Chevrolet Impala. Note the fake “air outlet” on the rear of the roof. Due to massive styling changes for all GM cars in 1959, the ’58 was a costly “one year only” body.

Inside, of this TriPower Bonneville features a Mallard Turquoise/Marlin Turquoise. The front and rear bench seats are in great shape while the turquoise carpet is in great order. The rear seat features the optional pop-up center armrest. The two-spoke Deluxe steering wheel looks great, the instrument panel and inner door panels are all in very good order but the wipers are inoperable. That aforementioned factory Deluxe AM radio with dual speaker control rounds out the interior.

The trunk is quite spacious despite the presence of the original spare tire. This car is equipped with the optional  “reel-out” trunk lamp which has a long cord that facilitates tire changes or looking under the hood at night. The automatic power antenna on the rear quarter panel is the first antenna offered on any car that raises and lowers automatically when the radio is operated – it retracts when the ignition is switched off.

Under the hood is a 370 CID V-8 engine with Tri-Power that makes 300 horsepower and 400 lbs-ft of torque. This Pontiac still has the correct Rochester TriPower with correct vacuum actuation, carb tags and authentic one year only air -cleaner. Tri-Power was an arrangement of three two-barrel Rochester carburetors in a line on the intake manifold. The center one was the default carb, with the other two acting as secondaries or “dumper” carbs under full throttle. Tri-Power cars also featured 10.5:1 cylinder heads and a high-lift camshaft. Backing this big V-8 is a four-speed Strato-Flight Hydramatic automatic transmission. Driver convenience features Reel-out trunk lamp, power steering, power brakes, day/night mirror, power electric antenna, Deluxe AM radio, windshield washers, pop-up rear armrest and dual high-fidelity rear speakers with dash switch.

Bonneville became a separate model in 1958, available as a two-door hardtop or a convertible. A Tri-Power-equipped convertible paced the Indianapolis 500 in 1958. Also, a 300 horsepower, 370 CID V-8 with four-barrel carburetor and dual exhausts was now standard equipment. A Tri-Power option was available with three two-barrel carburetors and even more power. The electric clock was standard.

A car magazine tested a ’58 Bonneville Two-door Hardtop with the Tri-Power V-8. Sixty mph came up in 7.6 seconds and the quarter-mile took 16 seconds to complete.

Documentation includes a copy of a personal and confidential letter to dealers dated October 25, 1957 regarding 1958 model year pricing from Frank V. Bridge, general sales manager.

Competition to this Bonneville in 1958 include Buick’s Super Series 75 Roadmaster Riviera two-door Hardtop, DeSoto’s Fireflite Sportsman two-door, Dodge’s Coronet Lancer Super D-500, Edsel’s Pacer, Mercury’s Monterey Phaeton Coupe and Oldsmobile’s 98 Holiday Coupe.

With its futuristic rocket exterior theme, a Tri-Power V-8 and array of options, this is a fairly rare classic Pontiac. If you prefer big GM cruisers from the 1950s, you couldn’t go wrong choosing this Bonneville. Stop by MotoeXotica Classic Cars today and check it out for yourself.

VIN: P558H5769

This car is currently located at our facility in St. Louis, Missouri. Current mileage on the odometer shows 60,213 miles. It is sold as is, where is, on a clean and clear, mileage exempt title. GET OUT AND DRIVE!!!

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Specifications Jump to top

Asking Price: $66,900 Miles: 60,213 VIN: P558H5769
Year: 1958 Make: Pontiac Model: Bonneville
Title: Clear Warranty: No Condition: Used
Options: Engine: 370 CID Tri-Power V-8 Transmission: Four-speed Automatic
Body: Coupe Doors: 2 Stock Number: 181014
Lot Number: Exterior: Mallard Turquoise/Marlin Turquoise Interior: Mallard Turquoise/Marlin Turquoise
Call Motoexotica: 636-600-4600 Ebay Listing: View on Ebay Sold to:

Video Jump to top

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