In overhead valve (OHV) engines, cam bearings typically consist of replaceable, insert-style bearings made from materials like aluminum or steel-backed with a bearing lining. These bearings support the camshaft and allow it to rotate smoothly while maintaining proper alignment. Some engines may also use a non-replaceable, cast-in-place design, where the bearing surfaces are part of the engine block itself. Proper lubrication is essential to minimize wear and ensure optimal performance.
It depends if it is an OHV(pushrod motor) or a s.o.h.c./d.o.h.c. motor. Ohv engines can have a timing chain set that allow for adjustment, to be installed. You can also install crank keyways that adjust the timing by moving the crank cam gear the required degree/s. Overhead cam engines can have cam gears installed that allow for cam adjustments.
The 2009 Chevrolet Impala has overhead valves (OHV).
The 2005 Buick LaCrosse has overhead valves (OHV).
The 2005 Chevrolet Corvette has overhead valves (OHV).
The 2009 Chevrolet Equinox has overhead valves (OHV).
The 2011 Chevrolet Corvette has overhead valves (OHV).
The 2001 Chevrolet Corvette has overhead valves (OHV).
The 2012 GMC Savana has overhead valves (OHV).
The 2006 Chevrolet Tahoe has overhead valves (OHV).
The 2012 Chevrolet Suburban has overhead valves (OHV).
The 2003 GMC Yukon has overhead valves (OHV).
The 2007 Chevrolet Corvette has overhead valves (OHV).