S.A. Gear S390T Engine Timing Camshaft Sprocket

The S.A. Gear S390T is a precision-engineered engine timing camshaft sprocket designed for Chevrolet small block V8 engines and select GM applications. This critical component works in conjunction with the timing chain, tensioners, and guides to maintain proper valve timing and engine performance.

Key Features:

• Precision-tooled tooth form and precision-machined bore for true fit and reliable operation
• CAD designed and manufactured using premium materials for durability
• Heat-treated construction for OE-level fit and function
• Extensively tested for function, fitment, and durability to ensure optimal performance
• Suitable for engine rebuilds and standard replacement applications

Cross-Reference Part Numbers: 223-390, 340235, S-390T, S390, SS390, ZS-S390T

OEM Part Number: 340235

This camshaft sprocket is compatible with a wide range of Chevrolet, GMC, Buick, Pontiac, and Oldsmobile vehicles equipped with small block engines including 283, 305, 307, 327, 350, 383, and 400 cubic inch displacements. It is recommended that the timing chain, tensioners, sprockets, and guides be replaced together when servicing the timing system, as these components play a vital role in system stability and accurate timing.