Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC1991FIREBIRD V8-350 5.7LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSTRANSMISSION AND DRIVETRAINDIFFERENTIAL ASSEMBLYSYSTEM SPECIFICATIONSWITH REAR DRUM BRAKES
1991 Pontiac Firebird V8-350 5.7L
With Rear Drum Brakes
1991 Pontiac Firebird V8-350 5.7LSECTION With Rear Drum Brakes
With Rear Drum Brakes
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| GM Models | Ring Gear Diameter | 7.62 Inch (in) | |
| Ring Gear Backlash | 0.005-0.009 Inch (in) | ||
| Pinion Bearing Preload | New | 24-32 Inch Pound-Force (in.lb) | |
| Used | 9-12 Inch Pound-Force (in.lb) | ||
| Total Assembly Preload | New | 35-40 Inch Pound-Force (in.lb) | |
| Used | 20-25 Inch Pound-Force (in.lb) |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.