What is the purpose of the moly skirt coating on these pistons?

The moly skirt coating helps to reduce friction between the piston skirt and the cylinder wall. This can lead to improved ring seal, reduced wear, and better overall engine performance, especially during break-in and under high loads.

What compression ratio can I expect with these pistons?

These pistons have an -18cc dish. The final compression ratio will depend on your cylinder head volume, head gasket thickness, and the stroke of your crankshaft. You will need to calculate this based on your specific combination.

Are rings and connecting rods included with these pistons?

This product listing is for the pistons and wrist pins only. Rings and connecting rods are sold separately and must be chosen to match the piston specifications and your engine build requirements.

Specifications

Brand: Manley Performance
Part #: 596205C-8
UPC: 807298072586

Manley Small Block Chevy LS Series 4.005in Bore 1.115in CD -18 cc Dish Coated Pistons

Name: Manley Small Block Chevy LS Series 4.005in Bore 1.115in CD -18 cc Dish Coated Pistons
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-ls-series-4-005in-bore-1-115in-cd-18-t14-198793
Price: 1004.51 USD
Availability: BackOrder

$1004.51

On Backorder

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Manley LS Series forged pistons for Small Block Chevy. 4.005in bore, -18cc dish, moly skirt coating.

Key Features

Fits Small Block Chevy LS Series engines with a 4.005 inch bore.
Forged from domestic 2618 alloy for superior strength and performance.
Features an -18cc dish for setting compression ratio.
Includes a moly skirt coating to reduce friction and cylinder wall wear.
Comes standard with tool steel wrist pins for added durability.
Piston skirt profiles are designed for power generation and cylinder wall protection.

These pistons are designed for Small Block Chevy LS Series engines with a 4.005 inch bore. Please verify compatibility with your specific engine build and other 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

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About this part

Product Details

If you're building a high-performance Small Block Chevy LS engine, getting the right pistons is crucial for power and reliability. These Manley "Platinum Series" pistons are forged from 2618 alloy, a strong material chosen for its ability to handle the stresses of performance builds. They feature a -18cc dish, which is important for setting your compression ratio, and a 4.005-inch bore size, common for many LS engine builds.

Manley puts a lot of thought into the details that make a difference. These pistons come with tool steel wrist pins for durability, and this specific part number includes a moly skirt coating. That coating helps reduce friction and wear on your cylinder walls, especially during the critical break-in period and under heavy load. The cam and barrel skirt profiles are designed to be effective at generating power while also being gentle on the cylinder walls, and their unique manufacturing process ensures the ring lands are perfectly square to the skirt for a solid seal.

This set is designed for serious engine builders who need dependable components. Remember that these pistons are not CARB approved and cannot be shipped to California. You'll want to confirm all other necessary components for your build, such as rings and connecting rods, to ensure proper fitment and function.