What is the purpose of the cam and barrel skirt profiles on these pistons?

These specific skirt profiles are designed to help the piston generate substantial power while also being gentler on the cylinder walls. This combination contributes to improved engine performance and increased durability over time.

What is the significance of the -20.00cc dish volume?

The dish volume is a critical measurement for determining your engine's final compression ratio. A -20.00cc dish means the piston has a concave shape that displaces a certain amount of volume in the combustion chamber, which is essential for achieving your target compression.

Are these pistons compatible with all LS engine builds?

These pistons are designed for Chevrolet LS engines with a 4.165 inch bore and feature a -20.00cc dish. While they are built for high performance, you should always confirm that the bore size and dish volume align with your specific engine build's requirements and desired compression ratio.

Specifications

Brand: Manley Performance
Part #: 566440CE-8
UPC: 807298100371

Manley Chevrolet LS Piston Set - 4.165in Bore 1.065in CH, -20.00 CC

Name: Manley Chevrolet LS Piston Set - 4.165in Bore 1.065in CH, -20.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-ls-piston-set-4-165in-bore-1-065in-ch-20-00--t14-880479
Price: 1359.30 USD
Availability: BackOrder

$1359.30

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Manley LS Piston Set - 4.165in Bore 1.065in CH, -20.00 CC. Forged 2618 alloy for superior strength and performance.

Key Features

Fits Chevrolet LS engines with a 4.165 inch bore.
Forged from domestic 2618 alloy for superior strength and performance.
Features proven cam and barrel skirt profiles for efficient power generation and reduced cylinder wall wear.
Exacting standards for piston ring lands and grooves ensure enhanced ring seal and more power.
Includes premium chrome moly wrist pins for durability.
Pistons have a -20.00cc dish volume, crucial for setting engine compression ratio.

These pistons are designed for Chevrolet LS engines with a 4.165 inch bore. Please verify 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 2618 alloy forging is key for these Manley LS pistons. This domestic alloy is known for its strength, which is critical when you're building a high-performance engine that needs to handle serious abuse. Manley uses proven cam and barrel skirt profiles on these pistons, which helps them generate power efficiently while also being easier on your cylinder walls during operation. This attention to detail in the skirt design means you get a more durable setup that can perform under pressure.

You'll also find exacting standards applied to the ring lands and grooves. This precision ensures a better seal with your piston rings, which translates directly into more power and better overall engine efficiency. The included chrome moly wrist pins are well-built and ready for action, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the skirt. This level of manufacturing accuracy is what professional engine builders rely on for consistent results and long-term durability in demanding applications.

When you're putting together a serious LS engine build, these Manley pistons are a solid choice. They are designed to work with a 4.165-inch bore and have a -20.00cc dish volume, which is important for setting your compression ratio. Remember, these pistons are not CARB approved and cannot be shipped to California.