What is the compression ratio achieved with these pistons?

These Mahle pistons are designed to achieve a 10.8:1 compression ratio when used with a 3.500-inch stroke, 5.700-inch connecting rod, and a -2.4cc piston dish volume. The final compression ratio can vary slightly based on cylinder head volume and gasket thickness.

What material are these pistons made from and why is it important?

These pistons are forged from 4032 aluminum. This material is chosen for its excellent strength and resistance to expansion under high temperatures and pressures, making it well-suited for performance and racing applications where durability is key.

Are these pistons suitable for all Small Block Chevy engines?

This specific set is designed for 359 cubic inch Small Block Chevy engines with a 4.040-inch bore. While it fits this displacement, always confirm your engine's exact specifications to ensure proper fitment, as bore sizes and other dimensions can vary between Small Block Chevy variants.

Mahle SBC Piston Set 4.040in Bore 10.8 CR 930206540

Name: Mahle MS Piston Set SBC 358ci 4.040in Bore 3.500stk 5.700in Rod .0927in Pin -2cc 10.8 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-sbc-358ci-4-040in-bore-3-500stk-5-700in-rod-0927in-pin-t14-30056
Price: 862.50 USD
Availability: BackOrder

Mahle MS Piston Set SBC 358ci 4.040in Bore 3.500stk 5.700in Rod .0927in Pin -2cc 10.8 CR Set of 8

$862.50

On Backorder

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

Mahle forged piston set for Small Block Chevy 359ci engines. Features a 4.040in bore and 10.8:1 compression ratio.

Key Features

Fits Small Block Chevy 359 cu in. engines.
Forged from 4032 aluminum for strength and durability.
Features a 4.040-inch bore and 3.500-inch stroke.
Designed for a 10.8:1 compression ratio with a -2.4cc dish volume.
Includes 0.0927-inch wrist pins.
Each piston weighs 415 grams.

This piston set is designed for Chevrolet Small Block 359 cu in. engines. Please verify compatibility with your specific engine configuration.

⚠️ 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 performance Small Block Chevy engine, getting the right pistons is crucial for power and reliability. This Mahle MS piston set is designed for 359 cubic inch applications, featuring a 4.040-inch bore and a 3.500-inch stroke, paired with a 5.700-inch connecting rod. These pistons are built for a 10.8:1 compression ratio, which is a solid target for many street and strip performance builds. They come with a 0.0927-inch pin and have a -2.4cc dish volume, contributing to that compression figure.

Mahle is known for well-built engine components, and these pistons are no exception. They are forged from 4032 aluminum, a material chosen for its strength and durability under high stress, while still being relatively lightweight at 415 grams each. This construction helps ensure they can handle the demands of a performance engine. The flat-top design is a common choice for achieving specific compression targets when used with appropriate cylinder heads. This set includes all eight pistons needed for a V8 engine.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are also subject to California's Prop 65 warning. For optimal installation and performance, always refer to Mahle's specific technical documentation and ensure your engine assembly is done by a qualified professional.