What material are these pistons made from?

These Manley pistons are forged from domestic 2618 alloy. This material is chosen for its superior strength and performance characteristics, making it well-suited for high-performance engine builds.

What is included with this piston set?

This set includes the pistons and tool steel wrist pins. Ring sets are typically sold separately and should be chosen based on your specific application and bore size.

Can these pistons be used in all 5.3L LS engines?

These pistons are specifically designed for the 5.3L LS Gen III engine family. While they feature a common bore size and dish volume, it's important to confirm compatibility with your specific cylinder heads and desired compression ratio for your build.

Specifications

Brand: Manley Performance
Part #: 561120C-8

Manley Chevrolet 5.3L LS Gen III Piston Set-3.800 in. Bore 1.115 in. CH -7.00 CC

Name: Manley Chevrolet 5.3L LS Gen III Piston Set-3.800 in. Bore 1.115 in. CH -7.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-5-3l-ls-gen-iii-piston-set-3-800-in-bore-1-1-t14-842941
Price: 1004.51 USD
Availability: BackOrder

$1004.51

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Manley Chevrolet 5.3L LS Gen III Piston Set-3.800 in. Bore 1.115 in. CH -7.00 CC. Forged from 2618 alloy for superior strength and performance in your LS engine.

Key Features

Fits Chevrolet 5.3L LS Gen III engines.
Forged from domestic 2618 alloy for superior strength and performance.
Features proven cam and barrel skirt profiles for reduced friction and cylinder wall wear.
Exacting ring lands and grooves ensure enhanced ring seal and more power.
Includes tool steel wrist pins for added durability.
Piston bore size is 3.800 inches.

This piston set is designed for Chevrolet 5.3L LS Gen III engines. 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

This is the Manley 561120C-8 piston set, built for Chevrolet 5.3L LS Gen III engines. If you're rebuilding or upgrading your LS engine, these pistons are a solid choice for serious performance. They feature a 3.800-inch bore, a 1.115-inch compression height, and a -7.00cc dish volume, designed to work with specific cylinder head combinations for optimal compression ratios.

Manley uses domestic 2618 alloy forgings for these pistons, which means they're incredibly strong and can handle the demands of high-performance applications. The pistons also come with proven cam and barrel skirt profiles that help reduce friction and wear on your cylinder walls, while still generating substantial power. You'll also find exacting standards in the ring lands and grooves, which is crucial for a good seal and maximum power output from your engine. They include tool steel wrist pins for added durability, and some part numbers even offer upgrades to even tougher alloys.

These pistons are manufactured using unique fixturing that allows the skirt turning and ring groove machining to happen in a single operation. This ensures the ring grooves are perfectly square to the skirt, which is vital for proper ring seal and engine longevity. Professional engine builders and tuners often rely on Manley pistons because of their consistent performance and durability. Keep in mind these are not CARB approved and cannot be shipped to California.