Performance Timing Chain Kit for Chevrolet Silverado 1500 (2003-2007) 4.8L 5.3L 6.0L

Precision Performance Timing Chain Kit for 2003-2007 Chevrolet Silverado 1500 (GMT800)

What it Does: The Performance Timing Chain Kit replaces the worn factory timing drive on the 2003-2007 Chevrolet Silverado 1500 to restore precise valve event synchronization, prevent timing retard, and eliminate chain slap.

The Stock Chevrolet Silverado 1500 Valvetrain Weakness

Factory Gen III LS engines inside the GMT800 platform—including the LR4 4.8L, LM7 5.3L, and LQ4 6.0L—rely on a factory-grade single-roller timing chain susceptible to link stretch and tooth wear over extended heat cycles. Under demanding towing cycles or higher valvetrain loads, prolonged chain deflection introduces camshaft retard and timing jitter. This slack compromises dynamic cylinder pressure, triggers erratic crank-cam correlation trouble codes (DTC P0341), and, in extreme cases, risks tooth skipping and piston-to-valve contact.

The Engineering Solution

Built to standard TS4194A architecture, this direct-replacement timing assembly restores absolute torsional rigidity between the crankshaft and camshaft. Featuring induction-hardened sprockets and shot-peened chain link plates, the kit eliminates mechanical backlash and resists galling under harsh RPM spikes. Machined specifically for 24X reluctor wheel configurations, the sprockets provide accurate tooth engagement that ensures steady oil retention, minimizes friction wear, and preserves calibrated valve timing across sustained high-load operating conditions.

What's Included

• 1 Timing Chain
• 1 Camshaft Sprocket
• 1 Crankshaft Sprocket

Technical Specifications

Compatibility

• 2003-2007 Chevrolet Silverado 1500 4.8L V8 (LR4)
• 2003-2007 Chevrolet Silverado 1500 5.3L V8 (LM7, L59, LM4, L33)
• 2003-2007 Chevrolet Silverado 1500 6.0L V8 (LQ4, LQ9)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT800 Silverado 1500?

Yes, this is a direct fit for the 2003-2007 Chevrolet Silverado 1500 equipped with Gen III LS engines featuring a 24X crank reluctor; it does not fit late-2007 New Body Style (Gen IV) trucks with 58X reluctors or single-bolt camshaft sprockets.

Does this kit require aftermarket camshaft bolts or degree shims?

No, this assembly installs directly using factory-style 3-bolt camshaft hardware and stock alignment marks without the need for custom spacing.

The Chevrolet Truck Standard

Demanding payload hauling and high-mileage fleet use demand valvetrain components that maintain strict mechanical tolerances under constant shear stress, keeping your Vortec V8 running reliably across every mile.