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

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

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

The cam and barrel profiles on the piston skirts are designed to optimize the piston's movement within the cylinder. This design helps to reduce friction and wear on the cylinder walls while contributing to overall engine power output.

What does the -2.50 CC dish volume mean for my engine build?

The -2.50 CC dish volume refers to the shape and volume of the recess in the piston's crown. This specification is critical for calculating your engine's final compression ratio when combined with your cylinder heads and head gasket thickness.

Specifications

Brand: Manley Performance
Part #: 591240-8
UPC: 807298026138

Manley Chevrolet Small Block Piston Set - 4.040in Bore 1.125in CH, -2.50 CC

Name: Manley Chevrolet Small Block Piston Set - 4.040in Bore 1.125in CH, -2.50 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-small-block-piston-set-4-040in-bore-1-125in--t14-880254
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 Forged Piston Set - 4.040" Bore. Built with 2618 alloy for superior strength and performance.

Key Features

Fits Chevrolet Small Block engines.
Features domestic 2618 alloy forgings for superior strength and performance.
Includes premium chrome moly wrist pins for durability.
Piston ring lands and grooves are machined to exacting standards for enhanced ring seal.
Boasts cam and barrel skirt profiles that help generate power while being gentle on cylinder walls.
Unique fixturing ensures ultimate ring groove to skirt squareness.

This piston set is designed for Chevrolet Small Block 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

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

When you're rebuilding the top end of your Chevrolet Small Block engine and aiming for serious performance, a strong set of pistons is crucial. This Manley Performance Piston Set is built for those who demand reliability and power from their engine build. These aren't just any pistons; they're crafted from domestic 2618 alloy forgings, a material known for its exceptional strength and ability to handle high performance demands. This means you can push your engine harder, knowing your pistons are up to the task.

Manley has put a lot of thought into the design of these pistons. They feature proven cam and barrel skirt profiles, which help the pistons move smoothly within the cylinder walls, reducing wear and contributing to more power. The ring lands and grooves are machined to very precise standards, ensuring a tight seal with your piston rings. This improved seal is key to getting the most power out of every combustion cycle and maintaining engine efficiency. Each set also includes premium chrome moly wrist pins, which are strong and durable for everyday performance use.

For those building a high-output engine, understanding the details matters. The 4.040-inch bore size is a common specification for many popular Small Block Chevy builds, and the 1.125-inch compression height is designed to work with a variety of crankshafts and connecting rods to achieve specific deck heights and compression ratios. The -2.50 CC dish volume indicates a specific amount of volume in the piston crown, which will affect your final compression ratio when paired with your cylinder heads and gasket thickness. These pistons are a solid choice for engine builders looking for well-made components that offer a good balance of strength, performance, and durability.