What is the compression ratio with these pistons?

These pistons feature a -26cc dish volume. When used with appropriate cylinder heads and a standard deck height, they will result in approximately an 8.4:1 compression ratio for a 383 cubic inch engine.

What material are these pistons made from?

The pistons are constructed from 4032 aluminum. This material is chosen for its strength and durability under high heat and pressure, as well as its favorable thermal expansion characteristics for performance engines.

Are these pistons compatible with all Chevrolet Small Block engines?

This set is specifically designed for Chevrolet Small Block engines configured to 383 cubic inches, with a 4.030 inch bore. It's important to ensure your engine's stroke, connecting rod length, and cylinder head volume align with the specifications of this piston set for proper fitment and performance.

Mahle SBC Piston Set 4.030in Bore 930211030

Name: Mahle MS Piston Set SBC 358ci 4.030in Bore 3.480/3.5stk 6.125in Rod 0.927 Pin -26cc 8.4 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-sbc-358ci-4-030in-bore-3-480-3-5stk-6-125in-rod-0-927--t14-30090
Price: 860.80 USD
Availability: BackOrder

Mahle MS Piston Set SBC 358ci 4.030in Bore 3.480/3.5stk 6.125in Rod 0.927 Pin -26cc 8.4 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 358ci 4.030in Bore 3.480/3.5stk 6.125in Rod 0.927 Pin -26cc 8.4 CR Set of 8Engine Piston Set

Key Features

Fits Chevrolet Small Block 383 cu in engines.
Mahle MS forged piston set.
4.030 inch bore size.
Designed for a 3.480 inch stroke and 6.125 inch connecting rod.
-26cc dish volume for 8.4:1 compression ratio.
Constructed from durable 4032 aluminum.

This piston set is designed for Chevrolet Small Block 383 cu in engines. 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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Product Details

Mahle is a well-known name in engine components, often supplying parts for original equipment manufacturers. This piston set is built for performance applications, specifically for Chevrolet Small Block engines aiming for a 383 cubic inch displacement. If you're rebuilding the heart of your engine for more power or a specific performance goal, these pistons are designed to handle the demands.

This set features pistons with a 4.030-inch bore, designed to work with a 3.480-inch stroke and a 6.125-inch connecting rod. The -26cc dish volume contributes to an 8.4:1 compression ratio when paired with the correct cylinder heads and deck height, making it suitable for naturally aspirated or forced induction builds where controlled compression is key. The pistons are made from 4032 aluminum, a material known for its strength and durability under high temperatures and pressures, while also offering good thermal expansion properties. They include a 0.927-inch pin for connecting to your rods.

Included in this set are eight pistons, ready to be installed in your engine. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to your engine builder's specifications and the manufacturer's installation instructions for proper assembly and tuning to achieve optimal performance and longevity.