What horsepower levels can this rotating assembly handle?

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

What components are included in this Manley rotating assembly?

This kit includes a 4340 forged steel crankshaft, 4340 forged steel H-Beam connecting rods with ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 38548HXX
UPC: 807298085616

Manley Rotating Assembly, BBC 548 4.250 STROKE/4.530/-20cc

Name: Manley Rotating Assembly, BBC 548 4.250 STROKE/4.530/-20cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-548-4-250-stroke-4-530-20cc-t14-880980
Price: 3988.95 USD
Availability: BackOrder

$3988.95

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Manley Rotating Assembly, BBC 548 4.250 STROKE/4.530/-20cc. Includes forged steel crankshaft, H-beam connecting rods, and forged aluminum pistons.

Key Features

This kit includes a 4340 forged steel crankshaft.
It comes with 4340 forged steel H-Beam connecting rods fitted with 7/16? ARP 8740 cap screws.
The assembly includes 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
This rotating assembly is rated for up to 900 horsepower with the standard ARP 8740 cap screws.
An optional upgrade to ARP 2000 cap screws allows the assembly to support up to 1,500 horsepower.
The pistons are designed for a -20cc dish, suitable for a 4.530 inch bore.

This rotating assembly is designed for BBC 548 cubic inch engines with a 4.250 inch stroke and 4.530 inch bore. Check manufacturer specifications for detailed 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

This Manley Performance rotating assembly is built for serious BBC 548 cubic inch builds, featuring a 4.250 inch stroke and designed for a 4.530 inch bore with -20cc piston dish. What you get in this kit is a robust 4340 forged steel crankshaft, a set of strong 4340 forged steel H-Beam connecting rods, and a set of 2618 forged aluminum Platinum Series pistons. The connecting rods come equipped with 7/16? ARP 8740 cap screws, with an option to upgrade to ARP 2000 cap screws for even more strength.

This assembly is designed to handle significant power. With the standard ARP 8740 cap screws, it's rated for up to 900 horsepower. If you opt for the stronger ARP 2000 cap screws, this rotating assembly can support an impressive 1,500 horsepower. The Platinum Series pistons are made from 2618 forged aluminum and include premium chrome moly wrist pins, ensuring durability under high stress.

This is a well-built rotating assembly intended for high-performance engine builds. Please note that this part is not CARB approved and cannot be shipped to California. It's crucial to consult with your engine builder to ensure this assembly meets the specific requirements and goals for your project.