Adjustable Guide Plates - SBC/SBF 3/8

The Adjustable Guide Plates - SBC/SBF 3/8 from COMP CAMS are precision-engineered valve train components designed for small-block Chevrolet and small-block Ford engines. These guide plates are essential for builders and enthusiasts who demand reliable valve control during high-rpm operation and aggressive cam profiles. They provide the fine-tuning capability needed to optimize valve geometry and ensure consistent performance across varying load conditions.

These 3/8-inch guide plates feature an adjustable design that accommodates variations in block deck height, head gasket thickness, and custom pushrod lengths—critical variables when running non-stock cam profiles or modified cylinder heads. By allowing you to dial in the correct rocker arm geometry, these plates reduce side loading on valve stems, minimize wear on valve guides, and improve overall valve actuation efficiency.

SBC and SBF engine builders—especially those running aftermarket camshafts, ported heads, or elevated compression ratios—will benefit most from these adjustable guide plates. Installation is straightforward, making them a valuable addition to any performance engine build.