What is the purpose of a rotating assembly?

A rotating assembly includes the crankshaft, connecting rods, pistons, rings, and bearings. These components work together to convert the linear motion of the pistons into the rotational motion that powers the vehicle. This specific assembly is designed for high-performance LS engine builds.

What is the difference between ARP 8740 and ARP 2000 rod bolts?

ARP 2000 rod bolts are a stronger, higher-tensile strength option compared to ARP 8740 bolts. They are often recommended for applications that experience higher cylinder pressures or higher RPMs, offering an added layer of security and durability for extreme performance builds.

Does this assembly require balancing?

Rotating assemblies, especially those with aftermarket components like this one, typically require balancing by a professional engine builder. This ensures the assembly spins smoothly and minimizes vibrations, which is crucial for engine longevity and performance.

Specifications

Brand: Manley Performance
Part #: 29402R
UPC: 807298093246

Manley Chevy LS 402 4in Stroke 4.005in Bore -4cc Flat Piston Rotating Assembly w/ARP 2000 Rod Bolts

Name: Manley Chevy LS 402 4in Stroke 4.005in Bore -4cc Flat Piston Rotating Assembly w/ARP 2000 Rod Bolts
Brand: Manley Performance
SKU: manley-performance-manley-chevy-ls-402-4in-stroke-4-005in-bore-4cc-flat-piston-r-t14-394602
Price: 4089.29 USD
Availability: BackOrder

$4089.29

On Backorder

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

Manley Chevy LS 402 rotating assembly for 4in stroke and 4.005in bore. Built with forged steel crank, H-beam rods, and forged aluminum pistons for high-performance builds.

Key Features

Fits Chevy LS engines with a 4-inch stroke and 4.005-inch bore.
Lightweight 4340 forged steel crankshaft for strength and durability.
4340 forged steel H-beam connecting rods with ARP 8740 cap screws.
Optional ARP 2000 cap screws available for enhanced rod strength.
2618 forged aluminum Platinum Series pistons with a -4cc flat top design.
Includes premium chrome moly wrist pins.

This rotating assembly is designed for Chevy LS engines with a 4-inch stroke and 4.005-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

This Manley Performance rotating assembly is built for Chevy LS engines looking to step up to a 402 cubic inch displacement with a 4-inch stroke and a 4.005-inch bore. It's a comprehensive package designed to handle the demands of a serious engine build, providing the core components needed to create a strong foundation for your LS powerplant.

At the heart of this assembly is a lightweight 4340 forged steel crankshaft, chosen for its strength and ability to withstand high RPMs and significant stress. Paired with this are 4340 forged steel H-beam connecting rods, known for their robust design and reliability. These rods come equipped with ARP 8740 cap screws, with an option for even stronger ARP 2000 bolts for those pushing the limits. The pistons are Manley's 2618 forged aluminum Platinum Series, featuring a -4cc flat top design that works well with various cylinder head combinations. They include premium chrome moly wrist pins for durability. To complete the package, high-performance piston rings and high-performance Clevite 'H' Series rod bearings (narrowed) and 'P' Series main bearings are included, all selected for their ability to handle high loads and provide excellent lubrication.

This assembly is a solid choice for builders aiming for a significant increase in displacement and performance from their LS engine. Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and balancing procedures.