GSC P-D SBC Manganese Bronze Int/Exh Valve Guide 2.225in L x .3415in ID x .502in OD +.001in - Single

This is a single GSC Power Division valve guide for Small Block Chevy (SBC) engines. It's made from manganese bronze, a material known for its good wear resistance and ability to handle the heat and friction found in the valve train. This guide measures 2.225 inches long, with an inner diameter of 0.3415 inches and an outer diameter of 0.502 inches. It's manufactured to a +.001 inch tolerance, meaning it's slightly oversized to ensure a snug fit in the cylinder head, which is crucial for proper valve sealing and performance.

Manganese bronze is a solid choice for valve guides because it offers a good balance of hardness and lubricity. This helps to reduce wear on both the guide and the valve stem, extending the life of your engine's valvetrain components. The precise sizing is important for rebuilding or modifying your engine's cylinder heads, ensuring the valve can move freely without excessive play.