Manley 290740HX Stroker Kit SBC Stroke Bore Small Block Chevy Engine Crankshaft Rotating Assembly - 355 3.480 4.040

The Manley 290740HX is a high-performance stroker kit designed for the Small Block Chevrolet (SBC) 355 platform, featuring a 3.480-inch stroke and 4.040-inch bore. This combination is engineered to maximize displacement and deliver significant gains in torque and horsepower over a stock configuration, making it a popular choice for street/strip and competition builds.

Manley Performance has been a trusted name in high-performance engine components for decades, and this stroker kit reflects their commitment to precision manufacturing and durability. Each component is designed to work together as a matched system, reducing the guesswork in selecting compatible rotating assembly parts.

Key Features:

• Application: Small Block Chevrolet (SBC) 355 engine platform
• Stroke: 3.480 inches for increased displacement and torque output
• Bore: 4.040 inches for optimized combustion chamber volume
• Manufacturer Part Number: 290740HX
• Engineered for high-performance street, strip, and competition applications
• Precision-manufactured components for proper fitment and balance
• Designed as a matched rotating assembly kit for simplified engine building

The Manley 290740HX stroker kit is an ideal foundation for builders looking to extract maximum performance from the proven Small Block Chevy architecture. As with all Manley rotating assembly kits, components are manufactured to tight tolerances to ensure long-term reliability under demanding conditions.