What is the maximum horsepower this rotating assembly can handle?

With the standard 7/16-inch ARP 8740 cap screws on the connecting rods, this assembly is rated for up to 900 horsepower. Upgrading to optional ARP 2000 cap screws increases the support to 1,500 horsepower.

What is the piston dish volume?

The pistons in this assembly have a +43cc dish volume, which is a key specification for determining compression ratio with specific cylinder heads.

Is this assembly balanced?

Rotating assemblies typically require balancing by a professional engine builder to match the specific components being used, including the crankshaft, rods, pistons, and flywheel/flexplate. Always consult the manufacturer's recommendations and your engine builder.

Specifications

Brand: Manley Performance
Part #: 29598
UPC: 807298080437

Manley Rotating Assembly, BBC 598 4.500 STROKE/4.600/+43cc

Name: Manley Rotating Assembly, BBC 598 4.500 STROKE/4.600/+43cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-598-4-500-stroke-4-600-43cc-t14-880958
Price: 4039.22 USD
Availability: BackOrder

$4039.22

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley BBC 598 rotating assembly. 4.500" stroke, 4.600" bore. Supports up to 1500 HP.

Key Features

Fits Big Block Chevrolet (BBC) engines.
Designed for a 598 cubic inch displacement with a 4.500-inch stroke and 4.600-inch bore.
Includes a 4340 forged steel crankshaft for robust performance.
Features 4340 forged steel H-beam connecting rods with 7/16-inch ARP 8740 cap screws.
Optional ARP 2000 cap screws are available for increased horsepower support.
2618 forged aluminum Platinum Series pistons are included.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines. It is not CARB approved and cannot be shipped to California.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're building a serious big-block Chevrolet engine, this Manley rotating assembly is a solid foundation. This kit is designed for a 598 cubic inch displacement, featuring a 4.500-inch stroke and a 4.600-inch bore with a +43cc piston dish. It's built to handle significant power, making it a popular choice for performance builds where reliability under stress is key.

The heart of this assembly is a 4340 forged steel crankshaft, chosen for its strength and durability under high loads. Paired with it are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16-inch ARP 8740 cap screws, which are rated for up to 900 horsepower. For those pushing the limits further, there's an option to upgrade to ARP 2000 cap screws, allowing this assembly to support up to 1,500 horsepower. The pistons are forged from 2618 aluminum, part of Manley's Platinum Series, and include Premium Chrome Moly wrist pins for added strength and longevity.

This rotating assembly is a well-built package for enthusiasts looking to maximize their big-block Chevy's performance. Keep in mind that this specific assembly is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and balancing procedures.