What is the compression ratio achieved with these pistons?

These pistons feature a -5cc dish volume. When used with compatible crankshafts and cylinder heads for a 357 cubic inch Small Block Chevy, they are designed to achieve a 10.4:1 compression ratio.

Are these pistons suitable for all Chevrolet Small Block engines?

These pistons are specifically designed for Chevrolet Small Block engines with a 357 cubic inch displacement and a 4.040 inch bore. It's important to verify that your engine build matches these specifications.

What does the 'Not CARB approved' note mean?

This means the pistons do not meet California Air Resources Board (CARB) emissions standards. As a result, they cannot be legally shipped to or installed on vehicles registered in California.

Mahle Forged Piston Set 4.040in Bore - 930200340

Name: Mahle MS Piston Set SBC 358ci 4.040in Bore 3.480/3.500stk 6.0in Rod .927 Pin -5cc 10.4 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-sbc-358ci-4-040in-bore-3-480-3-500stk-6-0in-rod-927-pi-t14-30010
Price: 783.94 USD
Availability: BackOrder

Mahle MS Piston Set SBC 358ci 4.040in Bore 3.480/3.500stk 6.0in Rod .927 Pin -5cc 10.4 CR Set of 8

$783.94

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 Chevrolet Small Block 357ci engines. 4.040in bore, -5cc dish, 10.4 CR.

Key Features

Forged 4032 aluminum construction for strength and durability.
Designed for Chevrolet Small Block 357 cu in engines.
4.040 inch bore size.
Compatible with 3.480/3.500 inch stroke and 6.000 inch connecting rods.
-5cc piston dish volume.
Achieves a 10.4:1 compression ratio.

This piston set is designed for Chevrolet Small Block 357 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

Secure CheckoutFast Shipping631-982-0042

Product Details

Mahle is a well-known name in engine components, recognized for their commitment to precision and performance. This piston set is built for Chevrolet Small Block engines, specifically for a 357 cubic inch displacement, and is designed for builders looking for a solid foundation for a performance build. These pistons are forged from 4032 aluminum, a material chosen for its strength and durability under high stress, making them a reliable choice for demanding engine applications.

This set features a 4.040-inch bore size, intended to work with a 3.480 or 3.500-inch stroke crankshaft and a 6.000-inch connecting rod. The pistons have a -5cc dish volume, which, combined with other engine components, helps achieve a 10.4:1 compression ratio. Each piston weighs 442 grams, contributing to a balanced rotating assembly. The 0.927-inch pin diameter is standard for many performance Small Block Chevy applications. These pistons are intended for use in engines where performance and reliability are key considerations.

Please note that this piston set is not CARB approved and cannot be shipped to California. It also carries a Prop 65 warning. Ensure you check all manufacturer specifications and local regulations before installation.