What is the compression ratio with these pistons?

These pistons feature a -5cc dish volume. When paired with the appropriate cylinder heads and crankshaft stroke, they are designed to achieve a 10.9:1 compression ratio for your engine build.

What materials are these pistons made from?

The pistons are constructed from 4032 aluminum, a well-known material for its strength, thermal stability, and durability in high-performance engine applications.

Are these pistons legal for use in California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle SBC Piston Set 4.155in Bore 930200755

Name: Mahle MS Piston Set SBC 379ci 4.155in Bore 3.480/3.5stk 6.125in Rod .927 Pin -5cc 10.9 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-sbc-379ci-4-155in-bore-3-480-3-5stk-6-125in-rod-927-pi-t14-30087
Price: 797.95 USD
Availability: BackOrder

Mahle MS Piston Set SBC 379ci 4.155in Bore 3.480/3.5stk 6.125in Rod .927 Pin -5cc 10.9 CR Set of 8

$797.95

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 SBC 377ci engines. 4.155in bore, -5cc dish, 10.9 CR. Set of 8.

Key Features

Fits Chevrolet Small Block 377 cu in engines.
Mahle forged piston set for performance applications.
4.155 inch bore size.
Designed for 3.480/3.500 inch stroke and 6.125 inch connecting rods.
Features a -5cc dish volume for a 10.9:1 compression ratio.
Constructed from 4032 aluminum for strength and durability.

This piston set is designed for Chevrolet Small Block 377 cubic inch 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 high-performance Chevrolet Small Block engine, this Mahle MS forged piston set is a solid choice for your 377 cubic inch application. These pistons are designed to handle the demands of a performance build, offering a strong foundation for your engine's top end. They feature a 4.155-inch bore and are designed to work with a 3.480 or 3.500-inch stroke crankshaft and a 6.125-inch connecting rod.

Mahle crafted these pistons from 4032 aluminum, a material known for its strength and durability, especially under high temperatures and pressures. Each piston has a -5cc dish volume, which, when combined with the other engine components, results in a 10.9:1 compression ratio. This compression ratio is ideal for many performance street and strip applications, offering a good balance of power and drivability. At 446 grams each, they are well-balanced for consistent engine operation. The .927-inch pin diameter is standard for many performance connecting rods.

This set includes eight pistons, enough for a complete V8 engine. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures to ensure optimal performance and longevity of your engine build.