What is the horsepower rating for this rotating assembly?

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

What is the bore and stroke of this assembly?

This rotating assembly is designed for a 4.500-inch stroke crankshaft and pistons intended for a 4.600-inch bore. The pistons themselves have a -3cc dish volume.

What materials are used in this Manley rotating assembly?

The crankshaft and connecting rods are constructed from strong 4340 forged steel. The pistons are made from 2618 forged aluminum, and they come with premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 28598RH
UPC: 807298079912

Manley Rotating Assembly, BBC 598 4.500 STROKE/4.600/-3cc

Name: Manley Rotating Assembly, BBC 598 4.500 STROKE/4.600/-3cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-598-4-500-stroke-4-600-3cc-t14-881082
Price: 4001.40 USD
Availability: BackOrder

$4001.40

On Backorder

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

Manley Performance BBC 598 rotating assembly with 4.500" stroke and 4.600" bore. Built for high horsepower applications.

Key Features

This rotating assembly fits Big Block Chevrolet (BBC) engines.
Features a 4.500-inch stroke crankshaft made from 4340 forged steel.
Includes 4340 forged steel H-beam connecting rods with 7/16-inch ARP 8740 cap screws.
Optional upgrade to ARP 2000 cap screws is available for increased horsepower capacity.
2618 forged aluminum Platinum Series pistons are included, designed for a 4.600-inch bore with a -3cc dish.
Premium chrome moly wrist pins are supplied with the pistons.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines with a 598 cubic inch displacement, 4.500-inch stroke, and 4.600-inch bore. Not CARB approved.

⚠️ 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 the 598 cubic inch displacement, featuring a 4.500-inch stroke crankshaft and pistons designed for a 4.600-inch bore with a -3cc dish. It's a complete package to get your engine's bottom end sorted out.

At the heart of this assembly is a 4340 forged steel crankshaft, known for its strength and durability under high stress. Paired with that are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16-inch ARP 8740 cap screws, a well-regarded fastener for performance builds. For those pushing the limits, there's an option to upgrade to ARP 2000 cap screws, which significantly increases the horsepower capacity of the assembly.

The pistons are Manley's Platinum Series, made from 2618 forged aluminum, a material chosen for its ability to handle extreme temperatures and pressures. They come complete with premium chrome moly wrist pins. With the standard ARP 8740 bolts, this assembly is rated for up to 900 horsepower. If you opt for the ARP 2000 bolts, that rating jumps to an impressive 1,500 horsepower, making this a versatile choice for a wide range of high-performance BBC builds. Please note this assembly is not CARB approved and cannot be shipped to California.