What is the significance of the -12.5cc dish volume?

The -12.5cc dish volume is a specific design feature that helps manage the compression ratio of your engine. It's typically used to lower the overall compression when paired with certain cylinder heads or head gasket thicknesses, allowing for more aggressive camshafts or forced induction setups.

What is included with this piston set?

This set includes the pistons themselves, which are +.005 inch oversize and feature a -12.5cc dish, along with premium chrome moly wrist pins. Ring sets are typically sold separately.

Are these pistons suitable for all engine builds?

These are Extreme Duty pistons made from 2618 alloy, designed for high-performance applications. While they offer superior strength, it's important to ensure they match the specific requirements and goals of your engine build, especially regarding bore size and compression ratio.

Specifications

Brand: Manley Performance
Part #: 598905CE-8
UPC: 807298094779

Manley Chrysler Hemi 6.4L +.005in Oversize/4.095in Bore -12.5cc Dish Extreme Duty Piston Set

Name: Manley Chrysler Hemi 6.4L +.005in Oversize/4.095in Bore -12.5cc Dish Extreme Duty Piston Set
Brand: Manley Performance
SKU: manley-performance-manley-chrysler-hemi-6-4l-005in-oversize-4-095in-bore-12-5cc--t14-111419
Price: 1269.53 USD
Availability: BackOrder

$1269.53

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Manley 6.4L Hemi +.005in oversize forged pistons. These extreme duty pistons feature a -12.5cc dish for improved performance and durability.

Key Features

Fits Chrysler Hemi 6.4L engines.
Set is +.005 inch oversize, intended for a 4.095 inch bore.
Features a -12.5cc dish volume for specific compression ratio tuning.
Constructed from domestic 2618 alloy forgings for superior strength.
Includes proven cam and barrel skirt profiles to reduce friction and cylinder wall wear.
Exacting standards for ring lands and grooves ensure enhanced ring seal and power.

This piston set is designed for Chrysler Hemi 6.4L engines and is +.005 inch oversize, requiring a 4.095 inch bore. 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

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About this part

Product Details

Manley's Extreme Duty Piston Set for the Chrysler Hemi 6.4L engine starts with domestic 2618 alloy forgings, a material chosen for its exceptional strength and performance under demanding conditions. These pistons are precisely machined to a +.005 inch oversize, meaning they are intended for a 4.095 inch bore, and feature a -12.5cc dish volume. This dish volume is a key design choice for managing compression ratios and combustion chamber characteristics in high-performance Hemi builds.

Beyond the core material and sizing, Manley incorporates several design elements that contribute to their reputation among professional engine builders. The pistons feature proven cam and barrel skirt profiles, which are carefully shaped to reduce friction and wear on the cylinder walls while still allowing for substantial power output. This design helps ensure that the pistons operate smoothly and efficiently. Additionally, Manley pays close attention to the ring lands and grooves, holding them to strict standards. This precision in the ring groove area is critical for achieving an enhanced ring seal, which directly translates to more power and better engine efficiency.

Included with this set are premium chrome moly wrist pins, known for their durability. Manley's unique fixturing process allows for skirt turning and ring groove machining to be done in a single operation. This ensures ultimate squareness between the ring grooves and the piston skirt, a detail that matters for consistent performance and longevity. These pistons are not CARB approved and cannot be shipped to California.