What is the compression height of these pistons?

The compression height for these Mahle pistons is 1.304 inches. This measurement is crucial for achieving the correct deck height when paired with your specific connecting rod and crankshaft combination.

Are these pistons suitable for a stock engine rebuild?

These are forged pistons designed for performance applications and a 10.5:1 compression ratio, which is typically higher than stock. They are best suited for performance builds where increased power and durability are desired, and require careful matching with other engine components.

What is the weight of each piston?

Each piston in this set weighs 430 grams. This consistent weight is important for balancing the rotating assembly, which helps to reduce engine vibration and improve overall performance.

Mahle Forged Piston Set 4.010" Bore 10.5:1 CR 930227810

Name: Mahle MS Piston 366cid 4.010 x 1.304 CH 3.622 STK 6.125 Rod 0.927 Pin -5.8cc 10.5CR -Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-366cid-4-010-x-1-304-ch-3-622-stk-6-125-rod-0-927-pin-5-8c-t14-597070
Price: 820.08 USD
Availability: BackOrder

Mahle MS Piston 366cid 4.010 x 1.304 CH 3.622 STK 6.125 Rod 0.927 Pin -5.8cc 10.5CR -Set of 8

$820.08

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 LS 366 cu in. Features 4.010" bore and 10.5:1 compression ratio.

Key Features

Fits Chevrolet LS 366 cu in. engines.
Set of 8 forged pistons.
4.010 inch bore size.
10.5:1 compression ratio with a -5.8cc dish volume.
Designed for 6.125 inch connecting rods and 0.927 inch wrist pins.
Constructed from 4302 aluminum alloy for strength and heat resistance.

This piston set is designed for Chevrolet LS engines with a 366 cubic inch displacement. 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 engine in your Chevrolet LS with a 366 cubic inch displacement, this set of eight forged pistons from Mahle is a solid choice. These pistons are designed with a 4.010 inch bore and a 3.622 inch stroke, intended to work with a 6.125 inch connecting rod and a 0.927 inch pin. They feature a dish volume of -5.8cc, which helps achieve a 10.5:1 compression ratio when paired with the right components.

Mahle uses 4302 aluminum alloy for these pistons, a well-known material for its strength and heat resistance in performance applications. The forged construction means they are built to withstand the higher pressures and temperatures found in performance or heavy-duty engines, offering improved durability over cast pistons. Each piston weighs in at 430 grams, contributing to a balanced rotating assembly. The specific dimensions, including the 1.304 inch compression height and 3.622 inch stroke compatibility, are critical for ensuring proper piston-to-valve clearance and deck height in your build.

This set includes all eight pistons needed for a V8 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 precise assembly details and compatibility with other engine components.