What is the compression ratio of this piston set?

This Mahle piston set features a -31cc dish volume. When used with appropriate cylinder heads, this configuration results in an 8.6:1 compression ratio, suitable for many performance engine builds.

What material are these pistons made from?

These pistons are forged from 2618 aluminum. This material is chosen for its strength and durability, making it well-suited for high-performance engine applications where stress and heat are significant factors.

Are these pistons compatible with all Small Block Chevy engines?

This set is specifically designed for Small Block Chevrolet engines with a 383 cubic inch displacement and a 4.030 inch bore. While many components are interchangeable, it's essential to verify compatibility with your specific engine block and crankshaft combination.

Mahle SBC Piston Set 4.030" Bore 8.6 CR 930210530

Name: Mahle MS Piston Set SBC 382ci 4.030in Bore 3.750in Stroke 5.7in Rod 0.927 Pin -31cc 8.6 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-sbc-382ci-4-030in-bore-3-750in-stroke-5-7in-rod-0-927--t14-29413
Price: 860.80 USD
Availability: BackOrder

Mahle MS Piston Set SBC 382ci 4.030in Bore 3.750in Stroke 5.7in Rod 0.927 Pin -31cc 8.6 CR Set of 8

$860.80

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 SBC 382ci 4.030in Bore 3.750in Stroke 5.7in Rod 0.927 Pin -31cc 8.6 CR Set of 8. Forged pistons for a robust Small Block Chevy build.

Key Features

This is a set of 8 forged pistons from Mahle.
Designed for a 4.030 inch bore size.
Features a 3.750 inch stroke and 5.700 inch rod length.
The piston dish volume is -31cc, resulting in an 8.6:1 compression ratio.
Each piston weighs 492 grams.
Utilizes a 0.927 inch pin diameter.

⚠️ 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

Mahle's MS piston set uses 2618 aluminum, a strong material chosen for its durability under high stress. These pistons are designed for a 4.030-inch bore and feature a 3.750-inch stroke, creating a 383 cubic inch displacement for your Small Block Chevrolet engine. The -31cc dish volume contributes to an 8.6:1 compression ratio when paired with a suitable cylinder head, making it a solid choice for naturally aspirated or forced induction builds where controlled compression is key.

Each piston weighs in at 492 grams, a figure that balances strength with rotational mass. The 5.700-inch rod length and 0.927-inch pin diameter are standard specifications that ensure compatibility with a wide range of connecting rods and crankshafts commonly found in SBC builds. This set includes eight pistons, providing a complete solution for a V8 engine. Mahle is a well-known name in engine components, and this piston set reflects their focus on well-built parts for performance applications.

When rebuilding or modifying your Small Block Chevy, selecting the right pistons is crucial for performance and longevity. This Mahle set offers a robust foundation for your engine project. Please note that this part is not CARB approved and cannot be shipped to California. Always refer to manufacturer installation guidelines for proper fitment and assembly procedures.