What is the purpose of the -18cc dish on these pistons?

The -18cc dish is a feature that helps determine your engine's compression ratio. By creating a recessed volume in the piston crown, it reduces the overall compression compared to a flat-top or domed piston, which is important for certain engine builds and fuel types.

Are these pistons suitable for a street-driven vehicle?

These are high-performance pistons designed for demanding engine builds. While they are well-built and durable, they are not CARB approved and cannot be shipped to California due to emissions regulations. Always consult with your engine builder to ensure they meet your specific build requirements.

What is included with these pistons?

This set includes the pistons and premium chrome moly wrist pins. Piston rings are sold separately and should be chosen based on your specific engine build and bore size.

Specifications

Brand: Manley Performance
Part #: 596230C-8
UPC: 807298072951

Manley Small Block Chevy LS Series 4.030in Bore - 1.115in CD - -18 cc Dish Platinum Series Pistons

Name: Manley Small Block Chevy LS Series 4.030in Bore - 1.115in CD - -18 cc Dish Platinum Series Pistons
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-ls-series-4-030in-bore-1-115in-cd-18-t14-299523
Price: 1004.51 USD
Availability: BackOrder

$1004.51

On Backorder

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

Manley Performance Platinum Series LS Pistons for Small Block Chevy. 4.030in bore, -18cc dish, 2618 alloy.

Key Features

Fits Small Block Chevy LS Series engines with a 4.030 inch bore.
Features a -18cc dish volume, crucial for setting compression ratio.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Includes premium chrome moly wrist pins for added durability.
Piston skirt profiles are designed to be gentle on cylinder walls while generating power.
Ring lands and grooves are held to exacting standards for enhanced ring seal.

This product is designed for Small Block Chevy LS Series engines with a 4.030 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, and their Platinum Series pistons are a prime example of that commitment. If you're building a high-performance Small Block Chevy LS engine, these pistons are designed to handle the demands of a custom build. They feature a -18cc dish, which is important for setting your compression ratio, and a 4.030-inch bore size, common for many LS engine builds.

These pistons are forged from domestic 2618 alloy, a strong material chosen for its ability to withstand high cylinder pressures and temperatures without deforming. Manley uses proven cam and barrel skirt profiles that help reduce friction and wear on your cylinder walls, contributing to both power and longevity. The ring lands and grooves are machined to very strict standards, which is crucial for getting a good seal from your piston rings, leading to better compression and more power. They also come with premium chrome moly wrist pins, and for some part numbers, upgrades to even tougher alloys are available.

What sets these pistons apart is Manley's unique fixturing process. It allows them to machine the piston skirt and the ring grooves in one setup. This ensures that the ring grooves are perfectly square to the piston skirt, which is critical for optimal ring seal and overall engine performance. When you're putting together a custom LS engine, using well-built components like these pistons from Manley can make a significant difference in how your engine performs and holds up over time.