Guide Plate - BBC 3/8 Adjustable (1pk)

The Guide Plate - BBC 3/8 Adjustable from DART is a precision-engineered pushrod management component designed for big block Chevy engines running 3/8-inch pushrods. This raised adjustable guide plate serves as a critical stabilization tool for high-performance and modified engine builds where pushrod geometry and control demand careful tuning. Builders and mechanics rely on adjustable guide plates to minimize deflection, reduce valve train noise, and maintain consistent pushrod alignment during aggressive engine operation.

Manufactured from durable steel and finished in black oxide, this guide plate features an adjustable design that allows technicians to dial in optimal pushrod positioning for their specific engine combination. The raised geometry accommodates aftermarket cylinder heads, custom rocker arm configurations, and non-stock cam profiles that may alter the stock pushrod path. Adjustability eliminates guesswork during assembly, enabling precise clearance management and reduced friction during startup and under load—a must-have when working with stroker builds, high-lift cams, or radical valve train modifications.

This guide plate is essential for big block Chevy enthusiasts building street engines, drag race mills, or restomod projects where pushrod stability impacts longevity and performance. The 3/8-inch design matches standard big block Chevy pushrod diameter, ensuring direct compatibility with BBC cylinder heads and block configurations. Installation involves mounting to the block or cylinder head and adjusting to your specific engine geometry—a straightforward procedure that delivers measurable improvements in valve train reliability and reduces the risk of pushrod walkout or deflection-induced valve float at high RPM.