What material are these pistons made from?

These Manley pistons are forged from a domestic 2618 alloy. This material is chosen for its strength and performance characteristics in demanding engine applications.

What is the purpose of the skirt profile and ring land machining?

The cam and barrel skirt profiles help the piston operate smoothly and efficiently, reducing wear on cylinder walls. The exacting machining of the ring lands and grooves is critical for achieving a proper seal with the piston rings, which directly impacts engine power and efficiency.

Are these pistons compatible with all LS engine builds?

While designed for LS engines, the specific dish volume (-18.00 CC) and compression height (1.115 in) mean you'll need to pair them with appropriate cylinder heads and a camshaft to achieve your desired compression ratio and overall engine performance. It's always best to consult with your engine builder or refer to detailed build specifications.

Specifications

Brand: Manley Performance
Part #: 596340C-8
UPC: 807298082868

Manley Chevrolet LS Piston Set - 4.165in Bore 1.115in CH, -18.00 CC

Name: Manley Chevrolet LS Piston Set - 4.165in Bore 1.115in CH, -18.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-ls-piston-set-4-165in-bore-1-115in-ch-18-00--t14-880538
Price: 1004.51 USD
Availability: BackOrder

$1004.51

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Manley LS Piston Set - 4.165in Bore 1.115in CH, -18.00 CC. Forged from 2618 alloy for superior strength and performance in Chevrolet LS engines.

Key Features

Fits Chevrolet LS engines with a 4.165 inch bore.
Forged from domestic 2618 alloy for superior strength and performance.
Features a -18.00 CC dish for custom compression ratio builds.
Includes tool steel wrist pins for added durability.
Cam and barrel skirt profiles help generate power while protecting cylinder walls.
Exacting standards for ring lands and grooves ensure enhanced ring seal.

This piston set is designed for Chevrolet LS engines. Please verify compatibility with your specific engine build and components.

⚠️ 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 high-performance Chevrolet LS engine, this Manley Piston Set is a solid choice. These pistons are forged from a 2618 alloy, a material known for its strength and ability to handle the stresses of performance applications. They feature a 4.165-inch bore size, a 1.115-inch compression height, and a -18.00 CC dish, which is important for achieving your target compression ratio with your specific cylinder heads and camshaft setup.

Manley uses proven cam and barrel skirt profiles on these pistons. This design helps them generate power efficiently while also being gentler on your cylinder walls, contributing to longer engine life. The ring lands and grooves are machined to exacting standards, which is crucial for a good seal between the piston rings and the cylinder wall. A tight seal means better combustion efficiency and more power. These pistons also come with tool steel wrist pins, offering good durability for demanding builds.

For serious engine builders, Manley's unique fixturing process allows them to machine the skirt and ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, which further enhances the ring seal. These pistons are not CARB approved and cannot be shipped to California.