Propeller Shaft Balance

1977 Chevrolet Hi-Cube 4.8L Eng VIN T, Standard TransSECTION Propeller Shaft Balance

Often propeller shaft imbalance can be cured by disconnecting shaft and rotating it 180Β° in relation to other components. Test by raising rear wheels off ground and turning shaft with engine.

CAUTION: Avoid excessive engine speed during this type of test.

If shaft still vibrates, attach a small weight to shaft at spline joint end. Weight should be about 1/2 oz. attached with hose clamp. Rotate shaft with engine and try weight in different locations around circumference of shaft to find position where vibration is least; then increase or decrease size of weight until vibration disappears. When proper size and location of weight are determined, tack weld weight into place.

Fig 1: View Showing Alignment Of Universal Joints On Chevrolet & GMC Models "C" & "G" Only
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RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
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  • β€’ You are not confident in the next step or safety outcome.