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 opt for the 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 connecting rods in this assembly are constructed from 4340 forged steel, which is known for its strength and durability in high-performance applications.

Are the pistons included with this rotating assembly?

Yes, this rotating assembly includes 2618 forged aluminum Platinum Series pistons. These pistons come with premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 29516HXX
UPC: 807298087368

Manley Rotating Assembly, BBC 516 4.000 STROKE/4.530/+2cc

Name: Manley Rotating Assembly, BBC 516 4.000 STROKE/4.530/+2cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-516-4-000-stroke-4-530-2cc-t14-881170
Price: 3782.41 USD
Availability: BackOrder

$3782.41

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Manley Rotating Assembly, BBC 516 4.000 STROKE/4.530/+2cc. Built with 4340 forged steel crank and rods for high-horsepower builds.

Key Features

This rotating assembly includes a 4340 forged steel crankshaft with a 4.000-inch stroke.
It comes with 4340 forged steel H-beam connecting rods fitted with 7/16-inch ARP 8740 cap screws.
The assembly features 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
This setup is rated for up to 900 horsepower with the standard ARP 8740 cap screws.
With optional ARP 2000 cap screws, this assembly can support up to 1,500 horsepower.
The pistons have a +2cc volume and are designed for a 4.530-inch bore size.

This rotating assembly is designed for BBC (Big Block Chevrolet) engines. Check manufacturer specifications to ensure 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 is key for any serious BBC build, and this Manley rotating assembly uses one with a 4.000-inch stroke. This is the foundation for a strong, reliable engine that can handle significant power. The 4.530-inch bore size and +2cc piston dish are designed to work together to achieve a specific compression ratio, which you'll want to match with your cylinder heads and camshaft for optimal performance.

Manley backs up that strong crankshaft with a set of 4340 forged steel H-beam connecting rods. These rods are built to last and come standard with 7/16-inch ARP 8740 cap screws, capable of handling up to 900 horsepower. If your build is pushing the limits, you can opt for ARP 2000 cap screws, which will 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 durability under stress.

This assembly is a well-built package for those looking to build a powerful big-block Chevrolet engine. It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and torque specifications.