GM Corvette 1963-1982 Repair Guide

REAR SUSPENSION

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See Figures 1 through 6

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Fig. Fig. 1: Exploded view of the rear suspension and related components-1963-79 vehicles



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Fig. Fig. 2: Key list for the rear suspension components-1963-79 vehicles



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Fig. Fig. 3: Exploded view of the rear suspension and related components-1980-82 vehicles



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Fig. Fig. 4: Key list for the rear suspension components-1980-82 vehicles



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Fig. Fig. 5: Rear suspension component mounting



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Fig. Fig. 6: Rear suspension component locations

The Stingray rear suspension is a three-link independent system. Longitudinal location is provided by control arms which pivot at the front on bolts through the frame step-up. The lower link is a strut rod which also serves as a camber rod with adjustment permitted by an eccentric cam on the inner end. The universal-jointed axle driveshafts double as the upper locating links. Shock absorbers attach to the frame at the top and attach to the spindle/camber rod strut at the bottom. Springing is provided by a multi-leaf transverse spring bolted to the rear cover of the differential carrier. 1980-82 models without the optional heavy duty suspension use a mono-leaf fiberglass reinforced plastic (FRP) spring. 6 1 / 2 in. rubber-cushioned link bolts locate the spring ends to the control arms.

Aside from controlling wheel location, each portion of the suspension has additional functions. The control arms and knuckle carries the brake caliper, thus, all brake torque and braking tractive forces are transmitted through the arms. The lateral links transmit side forces to the fixed differential, and through the rubber bushings in the cover beam to the frame. The upper link, or wheel drive shaft, transmits acceleration torque through the differential to the frame. The final duty of the lateral links is to maintain the camber angle of the wheel throughout its travel. Since the camber control support rod and the wheel drive shaft are of different lengths, a certain amount of camber change occurs through jounce and rebound. The overall result of the camber control support rod and wheel drive shaft geometry holds the wheel in a near vertical position at all times.

Direct double-acting shock absorbers are attached at the upper eye to a frame bracket and at the lower eye to the knuckle which has a threaded stud for the shock absorber lower eye. The transversely mounted spring is clamp bolted at the center section to a lower mounting surface on the differential carrier cover beam. The outer ends of the spring are provided with a hole through which the spring is link bolted to the rear of the knuckle. A stabilizer shaft is used which attaches to the section of the knuckle, and extends rearward where it is connected to the frame by two rubber bushings and mounting brackets. A single unit hub and bearing assembly is bolted to each knuckle. The hub and bearing assembly supports the drive axle shaft and spindle allowing torque to be transferred from the differential carrier to the wheel and tire. This hub and bearing assembly is a sealed unit and no maintenance is required.

 
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