Valve Guide: Service and Repair

Valve guides are an integral part of the cylinder head and are not removable. If valve stem clearance becomes excessive, the valve guide should be reamed to the next oversize and the appropriate oversize valves installed. Valves are available in .003 and .005 inch oversizes for 4-151 engine and .0035, .0155 and .0305 inch for V6-173 engines.