What is the horsepower rating for this rotating assembly?

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

What material are the crankshaft and connecting rods made from?

Both the crankshaft and the H-beam connecting rods are constructed from strong 4340 forged steel, chosen for its ability to withstand high stress and heat in performance applications.

Does this rotating assembly come with pistons and wrist pins?

Yes, this assembly includes 2618 forged aluminum Platinum Series pistons and premium chrome moly wrist pins. These components are designed to handle the demands of a high-performance engine.

Specifications

Brand: Manley Performance
Part #: 29632RX
UPC: 807298087757

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-t14-880975
Price: 4167.36 USD
Availability: BackOrder

$4167.36

On Backorder

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

Manley Rotating Assembly for BBC 632ci engines. Features a forged steel crank and rods, and forged aluminum pistons for high-horsepower builds.

Key Features

Fits BBC 632ci engines with a 4.750-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.
Comes with 2618 forged aluminum Platinum Series pistons.
Includes premium chrome moly wrist pins for durability.

This rotating assembly is designed for Big Block Chevrolet (BBC) 632 cubic inch engines with a 4.750-inch stroke and 4.600-inch bore. 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 for high horsepower, a strong rotating assembly is the heart of the operation. This Manley rotating assembly is built for the 632 cubic inch displacement, featuring a 4.750-inch stroke and designed for a 4.600-inch bore with a +43cc piston dish.

At its core is a 4340 forged steel crankshaft, chosen for its strength and durability under extreme loads. Paired with this are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16-inch ARP 8740 cap screws, a solid choice for builds up to 900 horsepower. If your build is pushing beyond that, you can opt for ARP 2000 cap screws for an upgrade that supports up to 1,500 horsepower.

The pistons are Manley's Platinum Series, made from 2618 forged aluminum, which offers excellent thermal stability and strength. They include premium chrome moly wrist pins, known for their hardness and resistance to wear. This assembly is a well-built foundation for a powerful engine, but please note it is not CARB approved and cannot be shipped to California.