Manley 290740RH SBC Stroke Flat Top Piston Kit - 355 3.480 4cc

The Manley 290740RH is a high-performance flat top piston kit designed for Small Block Chevrolet (SBC) 355 cubic inch engine builds. Featuring a 3.480-inch stroke and a -4cc flat top dome profile, these pistons are engineered to deliver reliable power and precise compression ratios in performance street and racing applications.

Manley Performance is a trusted name in high-performance engine components, and these pistons are manufactured to tight tolerances for optimal ring seal, reduced blow-by, and consistent combustion. The -4cc valve relief design allows proper valve clearance while maintaining a desirable compression ratio for naturally aspirated or mild forced induction builds.

Key Features:

• Application: Small Block Chevrolet (SBC) 355 cubic inch engine
• Stroke: 3.480 inches
• Dome Profile: -4cc Flat Top with valve reliefs
• Manufacturer Part Number: 290740RH
• Brand: Manley Performance
• Precision machined for tight tolerances and consistent fitment
• Designed for high-performance street and competition use
• Compatible with standard SBC block configurations

Manley's commitment to quality ensures each piston in the 290740RH kit meets strict dimensional standards, making them an excellent choice for engine builders seeking performance and durability in a classic Small Block Chevy platform.