What is the horsepower rating for this rotating assembly?

With the standard ARP 8740 cap screws, this Manley rotating assembly is rated for up to 900 horsepower. If you opt for the ARP 2000 cap screws, the assembly can support up to 1,500 horsepower.

What materials are used in this rotating assembly?

The crankshaft and connecting rods are made from 4340 forged steel. The pistons are constructed from 2618 forged aluminum, and they include Premium Chrome Moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 29632RH
UPC: 807298078113

Manley Rotating Assembly, BBC 632 4.750 STROKE/4.600/+43cc

Name: Manley Rotating Assembly, BBC 632 4.750 STROKE/4.600/+43cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-632-4-750-stroke-4-600-43cc-t14-880972
Price: 4262.81 USD
Availability: BackOrder

$4262.81

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Manley Rotating Assembly, BBC 632 4.750 STROKE/4.600/+43cc. Supports up to 1500 HP with optional ARP 2000 cap screws.

Key Features

This rotating assembly features a 4340 forged steel crankshaft with a 4.750-inch stroke.
It includes 4340 forged steel H-beam connecting rods equipped with 7/16-inch ARP 8740 cap screws.
The assembly comes with 2618 forged aluminum Platinum Series pistons and Premium Chrome Moly wrist pins.
This rotating assembly is rated for up to 900 horsepower with the standard ARP 8740 cap screws.
With optional ARP 2000 cap screws, the horsepower range is increased to 1,500 HP.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines. Check manufacturer specifications to confirm compatibility with your specific engine build.

⚠️ 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

Starting with a 4340 forged steel crankshaft, this Manley rotating assembly is built for serious big-block Chevrolet builds. The 4.750-inch stroke combined with a 4.600-inch bore creates a 632 cubic inch displacement, designed to handle significant power levels. This is a well-built foundation for a high-performance engine where reliability under stress is paramount.

The included 4340 forged steel H-beam connecting rods are fitted with 7/16-inch ARP 8740 cap screws, offering a robust connection. For those pushing the limits, an upgrade to optional ARP 2000 cap screws is available, raising the horsepower ceiling. Complementing the crankshaft and rods are 2618 forged aluminum Platinum Series pistons. These pistons feature Premium Chrome Moly wrist pins, ensuring durability and proper piston-to-wall clearance for optimal performance and longevity.

With the standard ARP 8740 cap screws, this assembly is rated for up to 900 horsepower. Opting for the ARP 2000 cap screws allows this rotating assembly to support an impressive 1,500 horsepower. Please note that this assembly is not CARB approved and cannot be shipped to California. It's essential to check all manufacturer installation guidelines before assembly.