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Chevrolet Impala 1958
by GrabCAD
Last crawled date: 3 years ago
History and origin.
The Impala name was first used for the full-sized 1956 General Motors Motorama show car that bore Corvette-like design cues, especially the grille. Painted emerald green metallic, with a white interior, the Impala featured hardtop styling. Clare MacKichan's design team, along with designers from Pontiac, started to establish basic packaging and dimensions for their shared 1958 General Motors "A" body in June. The first styling sketch that would directly influence the finished Chevrolet automobile was seen by General Motors Styling vice president Harley Earl in October. Seven months later, the basic design was developed.
First generation (1958)
1958 Chevrolet Bel Air Impala Sport Coupe
Overview
Model years 1958
Assembly Oshawa, Canada (Oshawa Car Assembly)
[Baltimore, Maryland], (Baltimore Assembly)
St. Louis, Missouri, (St. Louis Assembly)
South Gate, California, (South Gate Assembly)
Designer Joseph R. Schemansky[6]
Body and chassis
Body style
2-door convertible
2-door hardtop
Layout FR layout
Platform GM B platform
Related 1958 Chevrolet Delray
1958 Chevrolet Biscayne
1958 Chevrolet Bel Air
1958 Chevrolet Brookwood
1958 Chevrolet Nomad
Powertrain
Engine 235 cu in (3.9 L) Blue Flame I6
283 cu in (4.6 L) Turbo Fire V8
348 cu in (5.7 L) W-series Turbo Thrust V8
Transmission 3-speed manual
3-speed with overdrive manual
Turboglide automatic
2-speed Powerglide automatic
Dimensions
Wheelbase 2985 mm (117.5 in)
Length 5310 mm (209.1 in)[7]
Width 1975 mm (77.7 in)
Height 1450 mm (57 in)[7]
The Impala was introduced for the 1958 model year as top of the line Bel Air hardtops and convertibles. From the windshield pillar rearward, the 1958 Bel Air Impala differed structurally from the lower-priced Chevrolet models. Hardtops had a slightly shorter greenhouse and longer rear deck. The wheelbase of the Impala was longer than the lower priced models, although the overall length was identical. Interiors held a two-spoke steering wheel and color-keyed door panels with brushed aluminum trim. No other series included a convertible.
The 1958 models were longer, lower, and wider than its predecessors. The tailfins of the 1957 were replaced by deeply sculptured rear fenders. Impalas had three taillights each side, while lesser models had two and wagons just one. Crossed-flag insignias were attached above the side moldings, as well as bright rocker moldings and dummy rear-fender scoops. 1958 was the first year of dual headlamps.
For 1958, GM was promoting their fiftieth year of production, and introduced anniversary models for each brand; Cadillac, Buick, Oldsmobile, Pontiac, and Chevrolet. The 1958 models shared a common appearance on the top models for each brand; Cadillac Eldorado Seville, Buick Roadmaster Riviera, Oldsmobile Holiday 88, Pontiac Bonneville Catalina, and the all-new Chevrolet Bel-Air Impala.
The standard perimeter-type frame was abandoned, replaced by a unit with rails laid out in the form of an elongated "X." Chevrolet claimed that the new frame offered increased torsional rigidity and allowed for a lower placement of the passenger compartment. This was a transitional step between traditional construction and the later fully unitized body/chassis, the body structure was strengthened in the rocker panels and firewall. However, this frame was not as effective in protecting the interior structure in a side impact crash, as a traditional perimeter frame.
A coil spring suspension replaced the previous year's rear leaf springs, and an air ride system was optional. A 283 cu in (4,640 cc) engine was the standard V8, with ratings that ranged from 185 to 290 horsepower. A "W" block (not to be confused with the big-block) 348 cu in (5,700 cc) Turbo-Thrust V8 was optional, producing 250 hp (190 kW), 280 hp (210 kW), or 315 hp (235 kW). The Ramjet fuel injection was available as an option for the Turbo-Fire 283 V8, not popular in 1958.
A total of 55,989 Impala convertibles and 125,480 coupes were built representing 15 percent of Chevrolet production. The 1958 Chevrolet Bel Air Impala helped Chevrolet regain the number one production spot in this recession year.
The Impala name was first used for the full-sized 1956 General Motors Motorama show car that bore Corvette-like design cues, especially the grille. Painted emerald green metallic, with a white interior, the Impala featured hardtop styling. Clare MacKichan's design team, along with designers from Pontiac, started to establish basic packaging and dimensions for their shared 1958 General Motors "A" body in June. The first styling sketch that would directly influence the finished Chevrolet automobile was seen by General Motors Styling vice president Harley Earl in October. Seven months later, the basic design was developed.
First generation (1958)
1958 Chevrolet Bel Air Impala Sport Coupe
Overview
Model years 1958
Assembly Oshawa, Canada (Oshawa Car Assembly)
[Baltimore, Maryland], (Baltimore Assembly)
St. Louis, Missouri, (St. Louis Assembly)
South Gate, California, (South Gate Assembly)
Designer Joseph R. Schemansky[6]
Body and chassis
Body style
2-door convertible
2-door hardtop
Layout FR layout
Platform GM B platform
Related 1958 Chevrolet Delray
1958 Chevrolet Biscayne
1958 Chevrolet Bel Air
1958 Chevrolet Brookwood
1958 Chevrolet Nomad
Powertrain
Engine 235 cu in (3.9 L) Blue Flame I6
283 cu in (4.6 L) Turbo Fire V8
348 cu in (5.7 L) W-series Turbo Thrust V8
Transmission 3-speed manual
3-speed with overdrive manual
Turboglide automatic
2-speed Powerglide automatic
Dimensions
Wheelbase 2985 mm (117.5 in)
Length 5310 mm (209.1 in)[7]
Width 1975 mm (77.7 in)
Height 1450 mm (57 in)[7]
The Impala was introduced for the 1958 model year as top of the line Bel Air hardtops and convertibles. From the windshield pillar rearward, the 1958 Bel Air Impala differed structurally from the lower-priced Chevrolet models. Hardtops had a slightly shorter greenhouse and longer rear deck. The wheelbase of the Impala was longer than the lower priced models, although the overall length was identical. Interiors held a two-spoke steering wheel and color-keyed door panels with brushed aluminum trim. No other series included a convertible.
The 1958 models were longer, lower, and wider than its predecessors. The tailfins of the 1957 were replaced by deeply sculptured rear fenders. Impalas had three taillights each side, while lesser models had two and wagons just one. Crossed-flag insignias were attached above the side moldings, as well as bright rocker moldings and dummy rear-fender scoops. 1958 was the first year of dual headlamps.
For 1958, GM was promoting their fiftieth year of production, and introduced anniversary models for each brand; Cadillac, Buick, Oldsmobile, Pontiac, and Chevrolet. The 1958 models shared a common appearance on the top models for each brand; Cadillac Eldorado Seville, Buick Roadmaster Riviera, Oldsmobile Holiday 88, Pontiac Bonneville Catalina, and the all-new Chevrolet Bel-Air Impala.
The standard perimeter-type frame was abandoned, replaced by a unit with rails laid out in the form of an elongated "X." Chevrolet claimed that the new frame offered increased torsional rigidity and allowed for a lower placement of the passenger compartment. This was a transitional step between traditional construction and the later fully unitized body/chassis, the body structure was strengthened in the rocker panels and firewall. However, this frame was not as effective in protecting the interior structure in a side impact crash, as a traditional perimeter frame.
A coil spring suspension replaced the previous year's rear leaf springs, and an air ride system was optional. A 283 cu in (4,640 cc) engine was the standard V8, with ratings that ranged from 185 to 290 horsepower. A "W" block (not to be confused with the big-block) 348 cu in (5,700 cc) Turbo-Thrust V8 was optional, producing 250 hp (190 kW), 280 hp (210 kW), or 315 hp (235 kW). The Ramjet fuel injection was available as an option for the Turbo-Fire 283 V8, not popular in 1958.
A total of 55,989 Impala convertibles and 125,480 coupes were built representing 15 percent of Chevrolet production. The 1958 Chevrolet Bel Air Impala helped Chevrolet regain the number one production spot in this recession year.
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