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

These profiles help the piston move smoothly within the cylinder bore. This design reduces friction and wear on the cylinder walls while still allowing for substantial power output from the engine.

Are these pistons suitable for high-performance or racing applications?

Yes, these pistons are built using domestic 2618 alloy forgings and feature designs like cam and barrel skirts and precise ring lands, which are all geared towards superior performance and durability in demanding engine builds.

What is included with this piston set?

This set includes the pistons and premium chrome moly wrist pins. Ring sets are typically sold separately and should be chosen based on your specific engine build requirements.

Specifications

Brand: Manley Performance
Part #: 591130-8
UPC: 807298025988

Manley Chevrolet Small Block Piston Set - 4.030in Bore 1.250in CH, -2.50 CC

Name: Manley Chevrolet Small Block Piston Set - 4.030in Bore 1.250in CH, -2.50 CC
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-small-block-piston-set-4-030in-bore-1-250in--t14-880249
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 - 4.030in Bore 1.250in CH, -2.50 CC. Forged from 2618 alloy for superior strength and performance in high-output engines.

Key Features

Fits Chevrolet Small Block engines with a 4.030 inch bore.
Features a -2.50cc dish volume for specific compression ratio tuning.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Includes premium chrome moly wrist pins for added durability.
Designed with cam and barrel skirt profiles to reduce friction and wear on cylinder walls.
Exacting standards for ring lands and grooves ensure enhanced ring seal and power.

⚠️ 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 domestic 2618 alloy forgings, these Manley pistons are built for serious performance in Chevrolet Small Block engines. The 4.030-inch bore size and -2.50cc dish volume are key specifications for builders aiming for specific compression ratios and displacement targets. These aren't your average replacement pistons; they're designed for engines that demand more.

Manley's signature cam and barrel skirt profiles are a notable design choice. This shape helps the piston move smoothly within the cylinder bore, reducing friction and wear while still allowing for substantial power output. Coupled with exacting standards for ring lands and grooves, this design promotes a better ring seal, which is crucial for maximizing combustion efficiency and overall power. The pistons also come standard with premium chrome moly wrist pins, known for their strength and durability under stress.

For those pushing the limits, Manley's unique fixturing process ensures that the ring grooves are perfectly square to the piston skirt. This attention to detail is what separates performance components, contributing to consistent engine operation and longevity. If you're building a performance engine where reliability and power are paramount, these Manley pistons are a solid choice.