What is the compression ratio with these pistons?

These Mahle MS pistons are designed to achieve an 11.6:1 compression ratio when used with a 4.000-inch stroke crankshaft, a 6.125-inch connecting rod, and a 1.110-inch compression height. The dish volume is -5.8cc.

Are these pistons suitable for forced induction?

The 11.6:1 compression ratio is generally suitable for naturally aspirated builds or moderate boost applications. For higher boost levels, a lower compression ratio might be recommended, so consult with your engine builder.

What is the material of these pistons?

These pistons are made from 4032 aluminum, which offers good strength and thermal expansion characteristics suitable for performance engine builds.

Mahle LS 408 CID Piston Set 930227930

Name: Mahle MS Piston Set Chevrolet LS 408 CID 4.030in Bore 4.000 Stroke 1.110 CH 6.125 Rod 11.6 CR
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-chevrolet-ls-408-cid-4-030in-bore-4-000-stroke-1-110-c-t14-675881
Price: 820.08 USD
Availability: BackOrder

Mahle MS Piston Set Chevrolet LS 408 CID 4.030in Bore 4.000 Stroke 1.110 CH 6.125 Rod 11.6 CR

$820.08

On Backorder

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

Mahle MS Piston Set for Chevrolet LS 408 CID engines. Features a 4.030in bore and 11.6 compression ratio for improved performance.

Key Features

Fits Chevrolet LS 408 cu in engines.
4.030 inch bore size.
4.000 inch stroke compatibility.
1.110 inch compression height.
6.125 inch rod length compatibility.
11.6:1 compression ratio.

This piston set is designed for Chevrolet LS engines with a 408 cubic inch displacement. Please verify your engine's specifications before purchase.

⚠️ 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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Product Details

If you're building a high-performance Chevrolet LS engine, Mahle's MS Piston Set is a solid choice for your 408 cubic inch application. These pistons are crafted from 4032 aluminum, a material known for its strength and thermal expansion properties, making them well-suited for demanding builds. They feature a 4.030-inch bore and are designed to work with a 4.000-inch stroke crankshaft and a 6.125-inch connecting rod, with a compression height of 1.110 inches. This combination results in a 11.6:1 compression ratio, which is ideal for naturally aspirated or forced induction setups looking for a noticeable increase in power.

The pistons come with a 0.927-inch pin and have a dish volume of -5.8cc, contributing to the calculated compression ratio. Each piston weighs approximately 413 grams, helping to keep rotating assembly weight manageable for better engine response. Mahle has a long-standing reputation for producing well-built engine components, and this piston set reflects that commitment to performance and reliability. They are designed to fit right into your LS engine build, assuming the block has been machined to the specified 4.030-inch bore.

It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or a professional mechanic to ensure these pistons are the correct specification for your specific engine build and intended use. Proper installation and balancing of the rotating assembly are critical for the longevity and performance of your engine.