What material are these Mahle pistons made from?

These Mahle MS pistons are constructed from 4032 aluminum. This material is chosen for its well-built nature and durability, making it suitable for high-performance engine applications.

What is the compression ratio with these pistons?

When installed in a compatible LS 5.3L 327cid engine, these pistons contribute to an 11.6:1 compression ratio. This is due to their 3.9cc valve relief volume and the engine's specific bore and stroke dimensions.

Are these pistons compatible with all LS engines?

This specific piston set is designed for the Chevrolet LS 5.3L 327cid engine with a 3.790-inch bore. While many LS engines share similarities, it's crucial to verify the bore size and stroke of your particular engine to ensure proper fitment.

Mahle LS 5.3L Piston Set 930229890 - Chevrolet

Name: Mahle MS Chevrolet LS 5.3L 327cid 3.790in Bore x 1.324CH 3.622 Stroke 3.9cc 11.6 CR - Pist Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-chevrolet-ls-5-3l-327cid-3-790in-bore-x-1-324ch-3-622-stroke-3-9c-t14-350898
Price: 1079.56 USD
Availability: BackOrder

Mahle MS Chevrolet LS 5.3L 327cid 3.790in Bore x 1.324CH 3.622 Stroke 3.9cc 11.6 CR - Pist Set of 8

$1079.56

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 forged piston set for Chevrolet LS 5.3L 327cid engines. Part# 930229890. 3.790in bore, 11.6 CR.

Key Features

Fits Chevrolet LS 5.3L 327cid engines.
Set includes eight forged pistons.
Piston bore is 3.790 inches.
Stroke is 3.622 inches.
Features a 3.9cc valve relief volume.
Achieves an 11.6:1 compression ratio.

This piston set is designed for Chevrolet LS 327 cubic inch engines. Always confirm 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

If you're rebuilding the heart of your Chevrolet LS 5.3L engine, Mahle's MS forged piston set is a solid choice for a high-performance replacement assembly. These pistons are built for the 327 cubic inch displacement, featuring a 3.790-inch bore and a 3.622-inch stroke. They are designed as a drop-in forged replacement, meaning they integrate directly into your existing LS engine architecture without requiring extensive modifications.

Crafted from 4032 aluminum, these pistons are well-built for durability and performance under demanding conditions. They come with a 3.9cc valve relief volume, contributing to an 11.6:1 compression ratio, which is ideal for maximizing power output in naturally aspirated or boosted applications. The 1.324-inch compression height and 0.943-inch pin diameter ensure proper fitment with your connecting rods, and the total piston weight is 478 grams, balancing strength with reasonable mass for optimal engine response. This set includes all eight pistons needed for a complete engine rebuild.

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.