1958 Buick Facts, Figures, and Specifications
Five Fast Facts You May Not Know
1958 – Baroque Styling and a New Top Line
A bulky, more heavily chromed styling adorned the 1958 models. New Lucite paints were used in many colors with metallic paints called “Mist” prominent. For the first time since 1948, there were no distinguishing Ventiports on Buick front fenders. The “Limited” now sat above the Roadmaster, as a gap-bridging Series between Buick and Cadillac.
1958 Buick Resources
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1958 Buick Facts – Body Paint Color Codes
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1958 Buick
| 1 Green Mist | |
| 2 Blue Mist | |
| 3 Laurel Mist | |
| 4 Silver Mist | |
| 5 Polar Mist | |
| 6 Gold Mist | |
| A Carlsbad Black | |
| B Sylvan Gray | |
| C Glacier White | |
| D Hunter Green | |
| E Spray Green | |
| F Colonial Blue | |
| G Warwick Blue | |
| H Dark Turquoise | |
| J Light Turquoise | |
| K Antique Ivory | |
| L Casino Cream | |
| M Seminole Red | |
| N Garnet Red | |
| P Reef Coral | |
| R Desert Beige | |
| S Cobalt Blue | |
| T Desert Sage | |
| U Mojave Yellow | |
| W Canyon Cedar |
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1958 Buick Facts and Specifications
General Year Information – 1958 Buick Facts
For the first time since 1948, there were no distinguishing Ventiports on Buick’s front fenders. The new “drawer-pull” grille, made up of rectangular chrome squares, was used. Four headlamps were standard. New brakes featured cast-iron liners inside aluminum drums. New Lucite paints were used in many colors.
Limited
The Buick Limited name was revived as a single-year halo car for the Division. It used the Cadillac Series 60 extended deck to add more size over the Roadmaster. In comparison to the other models in the Buick lineup, the GM C platform-based Limited was slightly more restrained than the Special, Century, Super and Roadmaster. Instead of a chromed side panel trim, it got a body color-keyed insert decorated with fifteen slanted hash marks (three groups of five). The Limited also received its own rear tail treatment that traded the heavy chrome tail light housings for a wraparound tail light lens broken up by four chrome bands. The rear bumper housed “Dual Jet” back-up lights. In the front, it received the aggressive Fashion-Aire Dynastar grille, cast of 160 chrome squares. Front finned-aluminum power brakes and the the new Flight Pitch Dynaflow were standard.
The Limited was only available as a 4-door hardtop, 2-door hardtop coupe or convertible It sat on Buick’s 127.5 inch wheelbase, with an overall length of 227.1 inches. Interiors were of high quality fabrics in sedans and coupes, and full leather in convertibles.
Buick sold only 7,438 Limited models, due in part to their price and proximity to the Cadillac Series 62 that it was designed to act as a bridge between that car and the Roadmaster. However, the Limited’s four-door hardtop sedan started at a base price of $5,112, which was $221 higher than Cadillac’s entry-level Series 62 four-door hardtop sedan at $4,891. This mistake likely cost Buick sales.
Roadmaster
In 1958, the Roadmaster was now available as the well-equipped “75” model Like all ’58 Buicks, the body was styled to appear bulkier and was more heavily chromed. Buick’s new “drawer pull” grille was used – called “Fashion-Aire Dynastar”. It was made up of rectangular chrome squares. For the first time since 1948, there were no Ventiports on the front fenders. On the rear deck, the Roadmaster name was spelled out in block lettering beneath a Buick emblem housing the trunk lock keyway. Wheelhouses had bright moldings, rocker panels had an ebbed molding, and a large rear fender bright flash with ribbed inserts replaced the previous year’s chromed rear fender lower panel. It was later determined that the styling did not resonate with buyers and Sales fell further to 14,000.
Super
The once most popular Buick line was reduced to two body styles for 1958 with the elimination of the convertible. Side trim was similar to Series 40, except for the “Super” on the rear fender flashes. Super models remained longer than the Series 40 Specials and Series 60 Centurys, utilizing the 127.5 inch wheelbase. Standard equipment included Variable-Pitch Dynaflow, power steering, power brakes, a safety-cushion instrument panel bumper guards. A Custom interior was available at extra cost. Styling also hampered the Super with sales falling to 42,388, the lowest since the wartime 1942 model year
Century
The Century shared the Special’s sheetmetal and had the same excessive brightwork. It still utilized the high compression 364 CID V-8 with 4-barrel carburetion, but did not offer manual transmission or an optional high performance rear axle. As in 1957, the image of Century was reduced to that of a short-wheelbase Super Series. Identification was set with Century script within the rear fender flashes.
Special
Like the rest of the line, bulky and more heavily chromed styling characterized the 1958 Special. Special was spelled out across the deck lid, while a bright Sweepspear and a large rear fender bright flash was similar to other Buick models. A more plush Custom interior was available at extra cost. Notable was that the Dynaflow engined Specials, while still saddled with lower compression and a 2-barrel carburetor, had the Senior engine camshaft fitted – but horsepower was not stated as changed.
Historical
Model year production was 241,892 units, for a 5.7 percent market share. The four millionth Dynaflow transmission was built installed in a Buick this year. Likewise, the one millionth Buick power brake vehicle was built.
1958 Buick – Factoids
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- Limited Series Line Bows
- Cast Aluminum Front Brake Drums Featured
- Flight Pitch Triple Stator Dynaflow Arrives
- Air Ride Available
The Buick Limited name was revived as a single-year halo car for the Division. Instead of a chromed side panel trim, it got a body color-keyed insert decorated with fifteen slanted hash marks. The Limited also received its own rear tail treatment that traded the heavy chrome tail light housings for a wraparound tail light lens broken up by four chrome bands.
Buick recognized that the weight of their vehicles were rising and that, coupled with the advent of more powerful engines allowing higher tops speeds, was leading to the longer stopping distances and brake fade. Their solution was to dissipate braking heat faster with aluminum drums around a steel liner. This was an effective solution. The Special Series did not receive this drums as standard.
Buick recognized that most automatic transmissions in the luxury brands had moved to 3- or 4-speed transmissions to allow engine rpm to be minimized under acceleration and to offer selection of intermediate gears under certain driving conditions. This unit was similar to the Twin Turbine, but had a variable pitch stator that increased converter’s torque multiplication to 3:1. It did not have a manually selectable low gear (the only kickdown mechanism being the variable pitch stator), and had a shift quadrant that read P-R-N-D-G (where “G” stood for “grade retard”), moving reverse to the more practical position near park.
Like other GM brands, Buick offered Air ride rear suspension this year. Ostensibly, the system replaced the rear springs with air bladders and a compressor/tank. The system had an automatic leveling feature, and is was said to smooth the ride over bumpy roads. Unfortunately, it was prone to have the bladders fail and the system was complicated. It did not last long.
1958 Buick Facts – Models Offered
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Special – A more heavily chromed styling adorned the 1958 Special chassis. The Special name was spelled out across the deck lid, while a bright Sweepspear and a large rear fender bright flash was similar to other models. Standard features on the Special included an ignition key light, glovebox light, cigar lighter, trip mileage indicator, geared front window vent panes, bumper guards, variable-speed wipers, Step-On parking brake and on the Model 46C convertible received an outside left-hand rearview mirror. Special interiors were trimmed with grey cloth and vinyl or Cordaveen and vinyl, or all Cordaveen in the convertible. A more plush Custom interior was available at extra cost.
Special models were 2 door Sedan, 4-door Sedan, 2-door Hardtop Coupe, 4-door Hardtop Sedan, Convertible, 4-door hardtop 6-passenger Station Wagon, and 4-door post sedan 6-passenger Station Wagon.
Century –The Century shared the Special’s new sheetmetal and had as much plated brightwork. In addition to the Century name spelled out in block lettering on the deck lid, the 60 Series had Century script within the rear fender flashes. Standard equipment, in addition to features found on the Special, included Variable-Pitch Dynaflow, full wheel covers, carpeting, padded dash, foam rubber cushions, electric clock and dual horns. Custom-interiors were trimmed in nylon, except for the Model 69 Caballero Estate Wagon, which was upholstered in Cordaveen. The model 46C convertible had electric windows and two-way seat controls.
Century models were 4 door Sedan, 4-door Hardtop Sedan, 2-door Hardtop coupe, Convertible, and 4-door hardtop Caballero 6-passenger Station Wagon.
Super – The once most popular Buick line was reduced to two models for 1958. Side trim was similar to lesser series, except for the Super lettering on the rear fender flashes, but Supers used the longer wheelbase C Body of the Series 75 Roadmaster and Series 700 Limited. The Super name was also lettered across the deck lid. Standard equipment included Variable-Pitch Dynaflow, power steering, power brakes, a safety-cushion instrument panel, fully carpeted floor, courtesy lights and other items found on lesser models.
Super models were 2-door Hardtop and 4-door Hardtop.
Roadmaster –The Roadmaster had all the brightwork of the Super plus bright wheelhouse moldings, a ribbed rocker panel molding and ribbed inserts to the rear lender flashes. All 1958 Roadmaster models were now designated 75 series, as shown in the script and numerals on the fender flashes. On the rear deck, Roadmaster was spelled out in block lettering beneath a Buick emblem housing the trunk lock keyway. Standard Roadmaster features, in addition to those found on lesser Buicks, included power windows, a power six-way front seat, safety cushion dash, carpeted floors and lower doors, Glare-proof rearview mirror, safety buzzer, brake warning light and Deluxe wheel covers. Interiors were cloth or cloth and leather except for the convertible, trimmed in all leather.
Models available were 2-door Hardtop, 4-door Hardtop, and Convertible.
Limited – Buick resurrected Limited nameplate, last available in 1942 for a new extra luxury line in 1958. 15 vertical louvers and an absence of stainless were the distinguished trim for the Limited. All the chrome associated with other 1958 Buicks was present as well. The Limited had its own massive, louvered taillamps. Limited script was found on the rear doors or quarters, and a Buick badge flanked by four chrome bars was found on the Limited, which featured ultra-plush cloth, cloth and leather and in the case of the Model 756 Convertible, all-leather upholstery.
Models available were 2-door Hardtop, 4-door Hardtop, and Convertible.
1958 Buick Facts – Engines
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364 CID 2-Barrel V-8 – Manual Transmission. Overhead valves. Cast iron block. Five main bearings.
Displacement: 364 CID.
Bore and stroke: 4.125″ x 3.40″.
Compression ratio: 8.0.0:1.
Horsepower: 250 @ 4400 RPM.
Torque: 380 @ 2400 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 282°, Exhaust 282°, Overlap 62°, Lift (intake) 0.378″, (exhaust) 0.378”.
Carburetor: Stromberg 2-Barrel WW Model 108; or Carter WGD 2-Barrel Model 2674.
NOTE: Available in Series 40 Buick Special Only.
364 CID 2-Barrel V-8 – Dynaflow Transmission. Overhead valves. Cast iron block. Five main bearings.
Displacement: 364 CID.
Bore and stroke: 4.125″ x 3.40″.
Compression ratio: 9.5.0:1.
Horsepower: 250 @ 4400 RPM.
Torque: 380 @ 2400 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 297°, Exhaust 297°, Overlap 75°, Lift (intake) 0.423″, (exhaust) 0.423”.
Carburetor: Stromberg 2-barrel WW Model 109; or Carter WGD 2-Barrel Model 2675.
NOTE 1: Available in Series 40 Buick Special Only.
NOTE 2: While compression ratio in the Dynaflow Transmission version is much higher and it utilized the senior Series’ camshaft, Buick rated this engine at the same HP and Torque of the SMT version. It is unlikely this was true.
364 CID 4-Barrel V-8 – Dynaflow Transmission. Overhead valves. Cast iron block. Five main bearings.
Displacement: 364 CID.
Bore and stroke: 4.125″ x 3.40″.
Compression ratio: 10.0:1.
Horsepower: 300 @ 4600 RPM.
Torque: 400 @ 3200 RPM.
Valve lifters: Hydraulic.
Camshaft timing: Intake 297°, Exhaust 297°, Overlap 75°, Lift (intake) 0.423″, (exhaust) 0.423”.
Carburetor: Rochester 4-GC Model 7013100 or 7011600; or Carter AFB 4-Barrel Model 2800.
NOTE: Available in Century, Super, Roadmaster, and Limited with automatic transmission. Not Available in Series 40 Special.
1958 Buick Facts – Chassis Features
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- Wheelbase: Special and Century – 122.0 inches; Super, Roadmaster & Limited – 127.5 inches.
- Overall length: Special and Century – 211.8 inches; Super and Roadmaster – 219.1 inches; Limited – 227.1 inches.
- Overall width: Special and Century – 78.1 inches; Super, Roadmaster & Limited – 79.8 inches.
- Overall height: Special – 57.6 inches; Century – 56.9 inches; Super 59.4 inches; Roadmaster & Limited – 59.6 inches.
- Front tread: Special – 59.5 inches, Century, Super, Roadmaster & Limited – 60.0 inches.
- Rear tread: Special and Century – 59.0 inches; Super, Roadmaster & Limited – 61.0″.
- Tires: Special Sedans- 7.10 x 15; Special Hardtops & Convertible, Century, and Super 7.60 x 15; Roadmaster & Limited – 8.00 x 15.
- Optional Tires: Special Sedans- 7.60 x 15.
1958 Buick Facts – Powertrains
- Variable Pitch Transmission Ratios
- 1st – 1.82, 2nd – 1:10, Reverse – 1.82:1.
- Stator Stall Ratio 3.5:1 @ 3100 RPM (low angle) 3.2:1 @ – 1950 RPM.
- Flight Pitch Transmission Ratios
- All: 1st – 1.82, 2nd – 1:10, Reverse – 1.82:1.
- Stator Stall Ratio 4.5:1 @ 3200 RPM.
- Three Speed Manual Transmission Ratios
- Special Only: 1st – 2.153:1, 2nd – 1.373:1, 3rd – 1:1, Reverse – 2.279:1.
- Rear Gear Standard Ratios
- Dynaflow transmission: All – 3.23:1.
- Manual transmission: Special Only – 3.58:1.
1958 Buick Facts – Power Train Options
- Engines:
- 364 CID 250 HP Special V-8: Special only, Not Available Others.
- 364 CID 300 HP V-8: Standard on Century, Super and Roadmaster, Not Available on Special.
- Dual Exhaust: Standard on Roadmaster and Limited; Optional on Special, Century and Super ($25).
- Transmissions:
- Variable Pitch Transmission: Standard on Century and Super. Optional on Special. Not used on Roadmaster and Limited ($220).
- Flight Pitch Transmission: Standard on Roadmaster and Limited, Optional on Special ($296), Century, and Super. ($75).
- Three Speed Manual Transmission: Standard on Special. Not available on Century, Super, Roadmaster, and Limited.
1958 Buick Facts – Significant Options
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- Accessory group, Series 40 – includes electric clock, full wheel covers, automatic trunk light, rear license frame.
- Air conditioning, In-dash or under-dash.
- Air Poise air suspension.
- Antenna, electric.
- Autronic Eye.
- Carpet cover.
- Deluxe Handy mats.
- Dor-Gards.
- Easy-Eye glass.
- Electric clock.
- E-Z Eye glass.
- Handy-Spot-lite.
- Heater/defroster.
- License frames
- Padded instrument panel (standard Series 70, available for Series 50).
- Power brakes (standard Series 50, 75, 700).
- Power seat, six-way (standard Series 75, 700).
- Power steering – standard Series 50, 75. 700 ($108).
- Power windows (standard Model 66C, and all Series 75 and 700).
- Radio antenna, electric.
- Radio, Sonomatic.
- Radio, Wonder Bar signal-seeking.
- Rear seat speaker, except convertibles and station wagons.
- Rear view mirror, inside glare-proof.
- Rear view mirrors, outside glare-proof, right and left-hand.
- Safety group – includes back-up lights, lower instrument panel pad, parking brake warning light, glare-proof inside rearview mirror (standard on Series 75 and 700).
- Seat belts.
- Spotlite.
- Tissue dispenser.
- Two-tone and tri-tone paint.
- Upper instrument panel pad for Series 40 (standard other series).
- Visor vanity mirror.
- Wheel covers, full (standard on Roadmaster & Limited).
- Whitewall tubeless tires.
- Windshield washer (standard Series 75 and 700).
1958 Buick Downloads and Images
1958 Buick Facts – Related Document Downloads
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1958 Buick Print Advertisements
1958 Buick AMA Specifications Sheets
1958 Buick Super & Century Road Test – Motor Trend Magazine
1958 Buick Aluminum Brakes Explained – Sports Cars Illustrated Magazine
1958 Buick Facts – Related Images
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1958 Buick Limited Convertible
The 1958 Buick Limited Convertible was the top line Convertible this year. It’s high price lessened sales with only 839 produced.
1958 Buick Limited 4-door Hardtop
The 1958 Buick Limited 4-door Hardtop was the ultimate Buick in 1958 and sold well despite its price. 5,571 were delivered.
1958 Buick Limited 2-door Hardtop
The 1958 Buick Limited 2-door Hardtop was the largest 2-door in the line with its Cadillac Series 60 extended rear deck. Only 1,026 were built, mostly due to its high price.
1958 Buick Roadmaster Convertible
The 1958 Buick Roadmaster Convertible was its traditional self – long wheelbase and luxury interior. The higher price and the then current recession hurt sales, with only 1,181 being sold.
1958 Buick Roadmaster 4-door Hardtop
The 1958 Buick Roadmaster 4-door Hardtop was always considered the top line 4-door, except for this year. It was always a good seller for its price range and still managed to deliver 10,505 units in 1958.
1958 Buick Roadmaster 2-door Hardtop
The 1958 Buick Roadmaster 2-door Hardtop was the sporty Roadmaster, if 2 tons of 127 inch wheelbase could be considered “sporty”. It struggled to sell in this Recession year, with only 2,368 coupes finding customers.
1958 Buick Super 4-door Hardtop
The 1958 Buick Super 4-door Hardtop still combined the long wheelbase line with the less expensive interior trim. The result was a solid 28,460 in sales.
1958 Buick Super 2-door Hardtop
The 1958 Buick Super 2-door Hardtop, like its 4-door sister, used the roominess of the long wheelbase and combined it it with a more practical interior trim. It resulted in a good sales output of 13,928 delivered.
1958 Buick Century Convertible
The 1958 Buick Century Convertible used to be a sought after performance drop top, but Buick had moved away from adding any options that could provide more scoot. Sales diminished, now at only 2,588 built.
1958 Buick Century 4-door Hardtop
The 1958 Buick Century 4-door Hardtop combined 4-door pillarless styling with the short wheelbase and 300 horsepower. That made it the best-selling Century, with 15,171 finding happy customer.
1958 Buick Century 2-door Hardtop
The 1958 Buick Century 2-door Hardtop used to be considered the “bankers Hot Rod” when it returned in 1954. However, no performance options were offered in 1958, resulting in only 8,110 leaving the showrooms.
1958 Buick Century Caballero Hardtop Wagon
The 1958 Buick Century Caballero Hardtop Wagon may have been the surprise of the 1958 sales year for Buick. The pricey 4-door hardtop styling did not deter sales, likely because of its 300 HP V-8. 4,456 were sold – the best of all wagons.
1958 Buick Century 4-door Sedan
The 1958 Buick Century 4-door Sedan was a surprise addition to the Century line – mostly to bolster sagging sales. It didn’t, with only 7,421 produced.
1958 Buick Special Convertible
The 1958 Buick Special Convertible was still the best-selling convertible in the line, ostensibly due to its lower cost and good looks. 5,502 found happy customers.
1958 Buick Special 4-door Hardtop
The 1958 Buick Special 4-door Hardtop was always a great seller, and given the tight sales year of 1958, it still did well with 31,921 built.
1958 Buick Special 2-door Hardtop
The 1958 Buick Special 2-door Hardtop was the 2nd best-selling Buick because of its sporty looks and lower price, with 34,903 produced.
1958 Buick Special 4-door Hardtop Wagon
The 1958 Buick Special 4-door Hardtop Wagon was a smart choice by Buick – combining the Caballero styling with the Special’s lower price. The result was 3,420 wagons added to this year’s production.
1958 Buick Special 4-door Sedan
The 1958 Buick Special 4-door Sedan was always Buick’s best-selling car, and this year was no exception. 48,238 customers made this choice.
1958 Buick Special 4-door Wagon
One would have thought that the 1958 Buick Special 4-door Wagon would have been the best-selling in the wagon line, but it was a poor second to the Caballero and just sold a bit more than the Hardtop version, with 3,663 produced.








