Manley 290330RH SBC 434ci Rotating Assembly with Harmonic Balancer and ARP 2000 Rod Bolts

The Manley 290330RH is a complete Small Block Chevy (SBC) 434 cubic inch rotating assembly designed for high-performance engine builds. This ready-to-install rotating assembly bundles Manley's precision-engineered components into a single matched kit, saving time on sourcing and ensuring optimal balance and compatibility straight out of the box.

This assembly is built around a 434ci displacement configuration and includes a harmonic balancer (HB) for crankshaft vibration dampening, helping protect internal engine components under high-RPM and high-load conditions. ARP 2000 rod bolts are included, providing significantly greater clamping force and fatigue resistance compared to OEM-style hardware — a critical upgrade for forced induction, nitrous, or high-compression naturally aspirated builds.

Key Features:

• Complete rotating assembly for Small Block Chevy 434ci engine builds
• Includes harmonic balancer for crankshaft vibration control
• ARP 2000 rod bolts for superior tensile strength and reliability
• Precision balanced components for reduced vibration and extended engine life
• Engineered by Manley Performance — a trusted name in high-performance engine parts
• Designed to streamline the assembly process with matched, pre-selected components

Manley Performance has been a leader in high-performance engine components for decades, producing connecting rods, pistons, crankshafts, and complete rotating assemblies trusted by professional engine builders and racers worldwide. The 290330RH is engineered to deliver the strength, balance, and reliability demanded by serious performance applications.