1958 Chevrolet Specifications – Chassis specifications – Safety Girder Frame – Low, rigid tunnel center X-built. Full Coil Suspension – Four coil springs with double acting shock absorbers and built in levelizing control. Independent front suspension with spherical joints, four link rear suspension with rugged control arms above and below axle. Ride stabilizer bar on V8 models.
Wheels and Tires – 14 inch, 7.50 X 14 inch 4 ply rating low pressure tubeless on tires. 8.00 X 14 on convertible. Brakes – Hydraulic, self energizing 11 inch jumbo drum with bonded linings. Foot operated mechanical parking brakes, fingertip release. Steering – Forward mounted ball race gear, balanced relay linkage. Overall ratio 23:1. Rear Axle – Hypoid semi floating ratio matched to power team. Optional positraction rear axle. Fuel Tank – 20 gallon capacity. Electrical – 12 volt system, 54 plate battery, 30 ampere generator.
1958 Chevrolet Specifications – X-Braced – X-Built Girder Frame
Body Specifications – All welded Fisher unisteel construction, sealed and insulated, 14 point mounting. Polished lacquer finish, distinctive trim and identification for each series, horizontal dual headlights, directional signals, high level cowl air intake, concealed fuel filter. Single key locks, push button door handles, crank operated front vent windows, 2 speed electric windshield wipers, vacuum boosted type on Blue Flame 6 engines. Chevrolet 58.
1958 Chevrolet Specifications – Body Structure
Dimensions – Wheelbase 117.5 inches, front and rear tread 58.8 inches. Overall length 209.1 inches, width 77.7 inches, height Impala Sport Coupe 56.4 inches, Convertible 56.5 inches, other models 57.4 inches.
Clutch Specifications – 9 1/2 inch diaphragm spring type with Blue Flame 6 engine. 10 inch semi-centrifugal diaphragm spring type with Turbo-Fire V8, Super Turbo-Fire V8 and Ramjet Fuel Injection V8 and Super Turbo Thrust V8 engines. All clutches have cushioned disc and permanently lubricated throw out bearing.
Optional Equipment – Power steering, power brakes, power windows, power front seats, heavy duty rear coil springs, level-air suspension, positraction rear axle, heavy duty clutch, E-Z eye glass, padded instrument panel, side molding aluminum insert for Impala convertible, heater and defroster, air conditioner, white walls, radio, safety belts, oil filter, heavy duty generator, heavy duty battery, oil bath air cleaner and electric windshield wiper.
1958 Chevrolet Impala Convertible