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1984 Corvette Chassis Technology

1984 Corvette front view
A front grill, which had gradually been disappearing as the Corvette progressed, was gone completely in the C4. Some judicious engineering resulted in adequate airflow ducted from under the car for the radiator to cool the engine. Replacing the grill was a set of halogen running lamps, an inspiration gained from comparisons to the Porsche 928 and other european cars of the time. Cornering lamps located behind the front side marker lights were standard.

Note also that the new Corvette had almost a "bumperless" design. Although functional in that the bumpers protected the car from up to 5 mph of harm, they were also integrated fully into the body shape so that it was not possible to point out where the bumpers/body were defined.


1984 Corvette For Sale

Restoration Project Car
Price: $2,950 obo
Exterior: Needs a Paint Job
Interior: Needs to be Restored
Miles: 126,546
Location: DALLAS, TX

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This car has a Good 350 Crossfire Engine with Targa Top. The body is solid, The Interior needs to be completley restored and the car needs a paint job (more)

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Corvette C4 drivetrain, suspension
Light weight was a primary engineering goal which was achieved with generous amounts of aluminum in the suspension and chassis parts. Aluminum alloy was used in the half shafts, differential support, front and rear suspension crossmembers, drive shaft, torque convertor / transmission housing and various mounting brackets. The use of light weight materials in suspension parts was used to reduce unsprung weight which is necessary in a good handling world class sports car. Other benefits include more consistent parts with a die cast process, freedom from rust and they just look awesome.
Chevrolet Corvette C4 chassis
Chevrolet Corvette C4 frame, components
Chevrolet Corvette frame
A aluminum "C" section channel beam connected the transmission and the differential. Firmly tying together the major front (engine/transmission) and rear (differential and rear suspension) components improved handling and makes for a tight and agile driving feel. It's a common method used in other quality handling cars such as the Mazda Miata.
Side Outline View, C4 Corvette
Front Outline View, C4 Corvette Rear Outline View, C4 Corvette
Overhead Outline View, C4 Corvette
The transverse leaf spring which had worked so well in the rear suspension of all Corvettes since 1963 was part of the C4 design for both the rear and front suspension. A new design was made up of a single leaf (as opposed to multiple leafs) using fiberglass reinforced epoxy resin plastic. The innovative system resulted in lower unsprung weight and increased reliability. According to Chevrolet, the new fiberglass springs could be exercised 5,000,000 times without failure while the steel equivalent would usually break after about 750,000 jounces.
C4 Chevrolet Corvette body, chassis
The C2 and C3 rear suspension, although fully independent, was still a relatively simple three link design. The C4 got a bit more sophisticated with a five link rear suspension.
C4 Corvette, rear view C4 Corvette, front view
C4 Corvette, side view
At the front suspension, another Corvette first appeared: rack and pinion steering. It was the same system used in other great sports cars and was known for quick response and accuracy. A small damper was added to improve steering feel. The standard ratio was a relatively quick 15.5:1; an even faster ratio (13.0:1) was part of the performance handling package (RPO Z51; $600.20).
Note: Clicking on an image with this symbol (Boxes) will lead to a larger image.


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