Manley 290940HX SBC Stroker Kit Stroke Bore Engine Crankshaft Rotating Assembly - 383 3.750 4.040

The Manley 290940HX is a high-performance 383 cubic inch stroker kit for Small Block Chevy (SBC) engines, engineered for enthusiasts and racers looking to maximize displacement and power output from the classic Chevrolet small block architecture. This kit combines a 3.750" stroke crankshaft with components sized for a 4.040" bore, delivering the popular 383 stroker displacement that has made this combination one of the most sought-after performance builds in the industry.

Key Features:

• 383 Cubic Inch Displacement – Achieves the legendary SBC 383 stroker configuration
• 3.750" Stroke – Extended stroke crankshaft for increased displacement and torque
• 4.040" Bore – Components matched for 4.040" cylinder bore diameter
• Manley Performance Engineering – Built to Manley's exacting standards for strength, balance, and durability
• High-Strength Construction – Designed to handle the demands of performance street and racing applications
• Drop-In Compatibility – Engineered for Small Block Chevy engine families

Manley Performance has been a trusted name in high-performance engine components for decades, producing forged and precision-machined parts used in everything from street performance builds to professional motorsports. The 290940HX stroker kit provides a solid foundation for a high-output SBC build, offering the increased displacement needed to generate serious torque and horsepower gains over a standard 350 cubic inch configuration.