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 MANUALSPONTIAC1987FIREBIRD V8-350 5.7LREPAIR AND DIAGNOSISSTARTING AND CHARGINGCHARGING SYSTEMALTERNATORSPECIFICATIONS
1987 Pontiac Firebird V8-350 5.7L
Alternator: Specifications
1987 Pontiac Firebird V8-350 5.7LSECTION Specifications
Test Output & Field Current Draw
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| Rated Output | Test Output | Field Current Draw |
| 78,97 | - Note: Increase engine speed until maximum alternator output is obtained (approx. 2000 rpm); output must be within 10 amps of rated output. | 4-5 at 12 |
| 100 | - Note: Run engine at moderate speed of 2000 rpm; output must be within 15 amps of rated output. | --- |
| 56, 66, 94 | - Note: Increase engine speed until maximum alternator output is obtained (approximately 2000 rpm), output must be within 10 amps of rated output | 4-5 |
| 85,105,108,120 | - Note: Run engine at moderate speed of 2000 rpm; output must be within 15 amps of rated output. | 5.5-7 |
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:
- • 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.