What material are these pistons made from and why is it important?

These pistons are forged from 2618 alloy, a domestic material known for its superior strength and performance capabilities. This makes them well-suited for high-stress, performance engine applications where durability is key.

What is the purpose of the cam and barrel skirt profiles?

The cam and barrel profiles on the piston skirts are designed to reduce friction and wear on the cylinder walls. This design helps the piston move smoothly while also contributing to overall engine power.

Are these pistons compatible with all Chevrolet Small Block engines?

This specific set is designed for a 4.035-inch bore size. While it's for Chevrolet Small Block engines, you must confirm that your engine's bore matches this specification for proper fitment. They are also not CARB approved and cannot ship to California.

Specifications

Brand: Manley Performance
Part #: 591135-8
UPC: 807298026015

Manley Chevrolet Small Block Piston Set - 4.035in Bore 1.250in CH, -2.50 CC

Name: Manley Chevrolet Small Block Piston Set - 4.035in Bore 1.250in CH, -2.50 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-small-block-piston-set-4-035in-bore-1-250in--t14-880250
Price: 922.62 USD
Availability: BackOrder

$922.62

On Backorder

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

Manley Chevrolet Small Block Piston Set - 4.035in Bore 1.250in CH, -2.50 CC. Built with 2618 alloy forgings for superior strength and performance.

Key Features

Fits Chevrolet Small Block engines with a 4.035 inch bore.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Features proven cam and barrel skirt profiles that reduce friction and enhance power.
Exacting standards for piston ring lands and grooves ensure enhanced ring seal.
Includes premium chrome moly wrist pins for added durability.
The valve relief is -2.50cc.

This piston set is designed for Chevrolet Small Block engines with a 4.035 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

Manley Performance is well-known for building serious engine components for racing and high-performance applications. This piston set is a prime example, designed for Chevrolet Small Block engines. These aren't your average pistons; they're forged from 2618 alloy, a material chosen for its exceptional strength and ability to handle the stresses of a performance engine. If you're building or rebuilding a performance small block Chevy, these pistons are a solid choice for durability and power.

What sets these pistons apart is the attention to detail in their construction. The 2618 alloy forgings provide a strong foundation, while the cam and barrel skirt profiles are carefully shaped to reduce friction and wear on your cylinder walls, all while helping to generate more power. Manley also machines the ring lands and grooves to very tight tolerances, which is crucial for getting a good seal from your piston rings. A good ring seal means better compression and more efficient combustion. The set includes premium chrome moly wrist pins, known for their durability, and Manley's unique manufacturing process ensures the ring grooves are perfectly square to the piston skirt, further enhancing the seal.

This set is for a 4.035-inch bore with a 1.250-inch compression height and a -2.50cc valve relief. It's important to note that these pistons are not CARB approved and cannot be shipped to California. If you're aiming for serious performance and reliability in your small block Chevy build, these Manley pistons are a well-built component that professional engine builders trust.