Cloyes 9-3658TX9 Engine Timing Set

Cloyes 9-3658TX9 Timing Set Overview

The Cloyes 9-3658TX9 engine timing set is built for specific GM and related V8 applications that use a 3-bolt camshaft setup with a 1 sensor hub race billet configuration. It combines adjustable timing control with heat-treated billet steel components for precise engine setup in performance and service builds.

Fits 1997-2007 Chevrolet Corvette, N/A and other compatible applications listed below, including Chevrolet Silverado 1500, GMC Sierra 1500, and Pontiac GTO platforms.

Key Features

• Keyway-adjustable crankshaft sprocket with 9 keyways for +/- 8 degrees of timing adjustment
• Heat-treated billet steel sprockets for added durability
• TRUE Roller chain with 0.250-inch roller diameter to reduce friction
• Captured needle camshaft sprocket thrust bearing to reduce block thrust surface friction
• Hand-matched 3-piece set for correct center distance and reduced runout
• Specific-fit timing set for confirmed vehicle applications

Detailed Description

Cloyes 9-3658TX9 is an engine timing set engineered for precise cam timing control in select Chevrolet, GMC, Cadillac, Pontiac, Saab, Hummer, Buick, Isuzu, and related vehicles. The billet crankshaft sprocket uses nine keyways to provide adjustable timing in +/- 8 degree increments, making it a practical choice when dialing in engine performance or restoring factory timing accuracy. The billet steel sprockets are heat treated, and the roller chain design helps reduce friction during operation. A captured needle camshaft sprocket thrust bearing is included in the design to minimize thrust surface friction at the block. This part cross-references 93658TX9 for the same application.

Compatible With 1998-2002 Chevrolet Camaro, N/A; 2004-2006 Pontiac GTO, N/A; and 2000-2007 GMC Yukon, N/A, among many other listed GM truck, SUV, and performance car applications. The part number 9-3658TX9 is commonly searched for timing set replacement on Chevrolet Corvette, Silverado, and Sierra platforms.

What This Timing Set Helps Address

• Timing chain stretch or wear that affects cam timing accuracy
• Need for adjustable ignition and valve timing during engine setup
• Excess friction in the timing drive system
• Runout concerns from mismatched timing components
• Thrust surface wear at the camshaft sprocket interface

Installation Notes and Tips

Verify engine configuration before installation, including the 3-bolt camshaft pattern and 1 sensor hub race billet application notes shown in the fitment data. Confirm sprocket alignment, chain routing, and keyway selection during assembly to set the desired timing advance or retard. Because this is a specific-fit timing set, match the vehicle year, make, and model exactly before ordering. For service work on Chevrolet Silverado 1500, GMC Sierra 1500, or Chevrolet Corvette engines, inspect related timing components and sealing surfaces before final assembly.

Quality Assurance

Cloyes manufactures this timing set with billet steel sprockets, heat-treated components, and hand-matched center distance checks to support consistent fit and reduced runout. The design focus is on durability, timing accuracy, and controlled friction in demanding engine applications.