What is the horsepower rating for this rotating assembly?

With the standard 7/16? ARP 8740 cap screws, this assembly is rated for up to 750 horsepower. An optional upgrade to ARP 2000 cap screws increases the horsepower support to 1,500 HP.

What is the purpose of the -20cc dish in the pistons?

The -20cc dish volume in the pistons is designed to help achieve a specific compression ratio. This is crucial for engine performance and is determined in conjunction with your chosen cylinder heads and head gasket thickness.

Are there any restrictions on shipping or use for this product?

Yes, this rotating assembly is not CARB approved and cannot be shipped to California. It is intended for off-road or racing applications where such emissions standards do not apply.

Specifications

Brand: Manley Performance
Part #: 290230
UPC: 807298068756

Manley Rotating Assembly, SBC 434 4.000 STROKE/-20cc DISH

Name: Manley Rotating Assembly, SBC 434 4.000 STROKE/-20cc DISH
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-sbc-434-4-000-stroke-20cc-dish-t14-881127
Price: 3414.57 USD
Availability: BackOrder

$3414.57

On Backorder

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

Manley Performance SBC 434 rotating assembly with 4.000" stroke. Built for high-horsepower builds up to 1500 HP.

Key Features

Fits Small Block Chevy (SBC) 434 cubic inch applications.
Features a 4.000-inch stroke for increased displacement and torque.
Includes a lightweight 4340 forged steel crankshaft for strength and durability.
Comes with 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws.
Pistons are 2618 forged aluminum Platinum Series with Premium Chrome Moly wrist pins.
The -20cc dish piston volume helps achieve specific compression ratios.

This rotating assembly is designed for Small Block Chevy (SBC) 434 cubic inch engine builds. Compatibility with specific engine blocks or other components should be verified by the end-user.

⚠️ 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 Small Block Chevy (SBC) 434 cubic inch engine builds. It features a 4.000-inch stroke crankshaft, designed to increase displacement and torque potential for your engine. This assembly is a solid choice for anyone looking to push their SBC beyond its original limits, offering a robust foundation for high-horsepower applications.

At the heart of this kit is a lightweight 4340 forged steel crankshaft, chosen for its strength and ability to handle significant stress. Paired with this are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16? ARP 8740 cap screws, capable of supporting up to 750 horsepower. For those aiming for even higher power levels, an upgrade to optional ARP 2000 cap screws is available, pushing the horsepower limit to a remarkable 1,500 HP. The pistons are Manley's Platinum Series, made from 2618 forged aluminum and include Premium Chrome Moly wrist pins, ensuring durability and performance under demanding conditions. The -20cc dish volume in the pistons is a specific design choice that helps achieve a desired compression ratio when paired with appropriate cylinder heads and head gasket thickness.

This rotating assembly is a significant investment in your engine's performance and durability. It's important to note that this part is not CARB approved and cannot be shipped to California. Ensure you have the necessary supporting components, such as appropriate cylinder heads, camshaft, and tuning, to realize the full potential of this high-performance rotating assembly.