S.A. Gear S430T Engine Timing Camshaft Sprocket Ford V8 255 302 351W

The S.A. Gear S430T is a stock-replacement engine timing camshaft sprocket designed for Ford V8 engines. This cast sprocket is a direct-fit solution for engine rebuilds and timing system service on a wide range of classic Ford, Lincoln, and Mercury applications equipped with the 255, 302, and 351W cubic inch V8 engines.

Along with the timing chain, tensioners, and guides, the camshaft sprocket is a critical component within the engine timing system. Proper camshaft timing ensures correct valve operation, fuel delivery, and ignition events — directly affecting engine performance, efficiency, and longevity.

Key Specifications:

• Outside Diameter: 5.02 in.
• Tooth Quantity: 42 teeth
• Tooth Width: 0.41 in.
• Thickness: 0.90 in.
• Inside Diameter (Bore): 0.87 in.
• Chain Rows: Single row
• Material: Cast
• Color: Gray
• Keyway Notch: No

Cross-Reference Part Numbers:

• Ford OEM: D2AZ-6256-A, D3AZ-6256-B
• Elgin: S-430T
• Dynagear: S-430T
• Cloyes: S430T
• Sealed Power: 223-430
• Muskegon: CS-430

When servicing the timing system, it is recommended to replace the camshaft sprocket together with the timing chain, crankshaft sprocket, tensioners, and guides to ensure proper system performance and long-term reliability.