GSC P-D GM LS7 Manganese Bronze Intake/Exhaust Valve Guide +.003in Oversize OD - Single

GSC Power Division is known for making solid valvetrain components for performance builds. This single intake/exhaust valve guide is made from manganese bronze, a material that offers good wear resistance and lubricity, which is important for keeping your valves moving smoothly. It's designed for GM LS7 engines and comes at a +.003 inch oversize outer diameter, meaning it's intended to be honed to fit a specific valve stem size during an engine rebuild.

Using a manganese bronze guide helps manage heat and friction within the valve guide area. This is especially important in high-performance applications where engines are pushed harder and run hotter. The +.003 inch oversize OD means this guide is meant to replace a worn guide that has already been bored out, or it can be used in a block that has been machined to accept this larger size for a tighter fit.