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Fig. 164: View Of Upper/Lower Compression Rings & Marks
Courtesy of GENERAL MOTORS CORP.
4. Identify the compression and oil control rings for proper installation. The upper compression ring can be
identified by a paint mark (3) located 180 degrees from the end gap. The lower compression ring can be
identified by a paint mark (3) located 90 degrees from the end gap. Both rings should be installed with the
orientation marks (1, 2) facing the top of the piston.
IMPORTANT: When installing piston rings, use a ring expander plier type tool. Do not
roll the rings into the grooves of the piston. Use caution and care to
expand the rings only slightly larger than the outside diameter (OD) of the
piston.
2004 Chevrolet Corvette
2004 ENGINE PERFORMANCE Engine Mechanical (Repair Instructions 2 Of 3) - 5.7L - Corvette
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