Manley 290960RH SBC Stroker Kit Stroke Bore Small Block Chevy Engine Crankshaft Rotating Assembly - 383 3.750 4.060

The Manley 290960RH is a complete rotating assembly stroker kit designed for small block Chevrolet (SBC) engines built to 383 cubic inches. Combining a 3.750-inch stroke crankshaft with a 4.060-inch bore, this kit delivers the displacement and performance characteristics that have made the 383 stroker one of the most popular performance engine combinations in American motorsports.

Manley Performance has engineered this kit to deliver reliable power increases over a stock 350 cubic inch small block, making it a popular choice for street performance, hot rods, and track applications. Each component is manufactured to tight tolerances to ensure proper fit, balance, and long-term durability under high-performance conditions.

Key Features:

• Designed for small block Chevrolet (SBC) engine platforms
• 3.750" stroke forged steel crankshaft for increased displacement
• 4.060" bore specification for 383 cubic inch displacement
• Manley Performance precision manufacturing for tight tolerances
• Engineered for street performance, hot rod, and racing applications
• Increases displacement from standard 350 cu. in. to 383 cu. in.

Manley Performance Products is a trusted name in high-performance engine components, known for producing connecting rods, pistons, crankshafts, and rotating assemblies that meet the demands of professional engine builders and serious enthusiasts alike.