Cloyes 9-3659X3 Engine Timing Set

Cloyes 9-3659X3 Timing Set for GM V8 Applications

The Cloyes 9-3659X3 engine timing set is built for specific GM performance and truck applications that need precise cam timing control and durable valvetrain components. It combines a keyway-adjustable billet crankshaft sprocket with heat-treated billet steel sprockets and a TRUE Roller chain for reduced friction.

Fits 1997-2007 Chevrolet Corvette, N/A; Fits 1998-2002 Chevrolet Camaro, N/A; Fits 1998-2002 Pontiac Firebird, N/A; Fits 1999-2007 Chevrolet Silverado 1500, N/A; Fits 2000-2007 GMC Yukon, N/A; Fits 2004-2007 Buick Rainier, N/A.

• Keyway-adjustable crank sprocket with three keyways for +/- 4 degrees of timing adjustment
• Double roller chain design for stable cam-to-crank synchronization
• Heat-treated billet steel sprockets for added durability
• TRUE Roller chain with 0.250 inch roller diameter to reduce friction
• Hand-matched 3-piece set to help qualify center distance and minimize runout
• Specific-fit timing set for selected Chevrolet, GMC, Cadillac, Buick, Pontiac, Saab, Hummer, and Isuzu applications

Detailed Product Overview

This Cloyes timing set is intended for GM engines where accurate valve timing and consistent chain control matter. The adjustable billet crankshaft sprocket gives installers three keyway positions for fine-tuning cam timing, while the double roller chain and billet steel sprockets support dependable operation in street and performance use. Part number 9-3659X3 is also referenced as 93659X3.

This part cross-references 93659X3 for the same application.

Common Problems This Timing Set Can Address

• Timing chain stretch that can affect cam timing accuracy
• Excess friction in worn or basic chain setups
• Need for cam timing adjustment during engine setup
• Runout concerns from mismatched timing components
• Wear in older GM timing components used in high-mileage engines

Installation Notes and Tips

Verify engine code, sprocket style, and sensor hub configuration before ordering. Fitment notes for many listed applications specify a 3-bolt, 1 sensor hub layout and double roller type, so confirm your existing setup against the vehicle application. Some applications also note reduced-length chain options available by adding -5 or -10 to the end of the part number.

Because this is a specific-fit timing set, compare the original sprocket and chain configuration to the vehicle listing before installation. Proper cam timing setup is important when using the adjustable keyway feature.

Quality Assurance

Cloyes manufactures this timing set with billet steel sprockets that are heat treated for durability, and the components are hand-matched to help maintain correct center distance and reduce runout. The 9-3659X3 is built for precise fitment across confirmed GM applications including Chevrolet Corvette, Silverado 1500, and GMC Yukon models.