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 MANUALSCHEVROLET2007IMPALA V8-5.3LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER BLOCK ASSEMBLYPISTON RINGSPECIFICATIONS
2007 Chevrolet Impala V8-5.3L
Piston Ring: Specifications
2007 Chevrolet Impala V8-5.3LSECTION Specifications
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production 0.23-0.44 mm 0.009-0.017 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service 0.23-0.5 mm 0.009-0.0196 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production 0.44-0.7 mm 0.017-0.027 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service 0.44-0.76 mm 0.0173-0.03 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production 0.18-0.75 mm 0.007-0.029 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service 0.18-0.81 mm 0.007-0.032 in
Piston Ring to Groove Clearance - First Compression Ring - Production 0.04-0.085 mm 0.00157-0.00335 in
Piston Ring to Groove Clearance - First Compression Ring - Service 0.04-0.085 mm 0.00157-0.00335 in
Piston Ring to Groove Clearance - Second Compression Ring - Production 0.04-0.078 mm 0.00157-0.0031 in
Piston Ring to Groove Clearance - Second Compression Ring - Service 0.04-0.078 mm 0.00157-0.0031 in
Piston Ring to Groove Clearance - Oil Control Ring - Production 0.012-0.2 mm 0.0005-0.0078 in
Piston Ring to Groove Clearance - Oil Control Ring - Service 0.012-0.2 mm 0.0005-0.0078 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service 0.23-0.5 mm 0.009-0.0196 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production 0.44-0.7 mm 0.017-0.027 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service 0.44-0.76 mm 0.0173-0.03 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production 0.18-0.75 mm 0.007-0.029 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service 0.18-0.81 mm 0.007-0.032 in
Piston Ring to Groove Clearance - First Compression Ring - Production 0.04-0.085 mm 0.00157-0.00335 in
Piston Ring to Groove Clearance - First Compression Ring - Service 0.04-0.085 mm 0.00157-0.00335 in
Piston Ring to Groove Clearance - Second Compression Ring - Production 0.04-0.078 mm 0.00157-0.0031 in
Piston Ring to Groove Clearance - Second Compression Ring - Service 0.04-0.078 mm 0.00157-0.0031 in
Piston Ring to Groove Clearance - Oil Control Ring - Production 0.012-0.2 mm 0.0005-0.0078 in
Piston Ring to Groove Clearance - Oil Control Ring - Service 0.012-0.2 mm 0.0005-0.0078 in
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.