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 MANUALSPONTIAC1998FIREBIRD V8-5.7L VIN GREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
1998 Pontiac Firebird V8-5.7L VIN G
Piston Ring, Engine
1998 Pontiac Firebird V8-5.7L VIN GSECTION Piston Ring, Engine
Piston Compression Ring End Gap (Measured In Cylinder Bore):
Production:
Top 0.23 - 0.38 mm (0.009 - 0.0149 inch)
2nd 0.44 - 0.64 mm (0.0173 - 0.0251 inch)
Service Limit:
Top 0.23 - 0.38 mm (0.009 - 0.0149 inch) Maximum
2nd 0.44 - 0.64 mm (0.0173 - 0.0251 inch) Maximum
Piston Oil Ring End Gap (Measured In Cylinder Bore):
Production 0.18 - 0.69 mm (0.007 - 0.0271 inch)
Service Limit 0.18 - 0.69 mm (0.007 - 0.0271 inch) Maximum
Production:
Top 0.23 - 0.38 mm (0.009 - 0.0149 inch)
2nd 0.44 - 0.64 mm (0.0173 - 0.0251 inch)
Service Limit:
Top 0.23 - 0.38 mm (0.009 - 0.0149 inch) Maximum
2nd 0.44 - 0.64 mm (0.0173 - 0.0251 inch) Maximum
Piston Oil Ring End Gap (Measured In Cylinder Bore):
Production 0.18 - 0.69 mm (0.007 - 0.0271 inch)
Service Limit 0.18 - 0.69 mm (0.007 - 0.0271 inch) Maximum
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.