Corvette V8-5.7L VIN G (1997)
3. Inspect the valve margin. The exhaust valve may be refaced if the margin is greater than 1.25 mm (0.050 inch) thick before grinding.
4. Reface pitted exhaust valves on a suitable valve refacing machine.
5. Replace the valve if the margin is less than 1.25 mm (0.050 inch) thick after grinding.
6. If the valve face has been ground, it may be necessary to shim the valve spring to obtain the proper spring installed height.
CAUTION: Excessive valve stem-to guide clearance may cause a noisy valve train, premature valve stem oil seal wear, component damage,
and/or excessive engine oil consumption. Insufficient valve stem-to-guide clearance will result in noisy or sticking valves. Valves that are too tight
may disturb engine smoothness or lead to component damage.
7. Inspect for excessive valve stem (1) to guide (2) clearance.
