What material are these pistons made from and why is it important?

These pistons are forged from domestic 2618 alloy. This material is chosen for its superior strength and performance characteristics, making it well-suited for high-stress, high-performance engine builds.

What is the purpose of the -20cc dish on these pistons?

The -20cc dish is a design feature that helps reduce the compression ratio of the engine. This is important for tuners and builders who need to control compression, especially in forced induction applications or when using specific cylinder heads.

Are these pistons compatible with all Chevy LT1 engines?

These pistons are specifically designed for Chevy LT1 engines with Direct Injection, a 4.00-inch stroke, and a 4.125-inch bore. It's important to confirm these specifications match your engine build to ensure proper fitment.

Specifications

Brand: Manley Performance
Part #: 560500CE-8
UPC: 807298096711

Manley Chevy LT1 Direct Injected Series 4.00in Stroke 4.125in Bore -20 cc Dish Extreme Duty Pistons

Name: Manley Chevy LT1 Direct Injected Series 4.00in Stroke 4.125in Bore -20 cc Dish Extreme Duty Pistons
Brand: Manley Performance
SKU: manley-performance-manley-chevy-lt1-direct-injected-series-4-00in-stroke-4-125in-t14-25439
Price: 1269.53 USD
Availability: BackOrder

$1269.53

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Manley Chevy LT1 Direct Injected Series 4.00in Stroke 4.125in Bore -20 cc Dish Extreme Duty Pistons. Built with 2618 alloy for superior strength and performance.

Key Features

Fits Chevy LT1 Direct Injected engines with a 4.00in stroke and 4.125in bore.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Features a -20cc dish volume for tuning compression ratios.
Includes premium chrome moly wrist pins for added durability.
Exacting ring lands and grooves ensure enhanced ring seal and more power.
Cam and barrel skirt profiles help generate power while being gentle on cylinder walls.

These pistons are designed for Chevy LT1 Direct Injected engines. Please verify compatibility with your specific engine configuration before purchase.

⚠️ 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

These Manley Extreme Duty pistons start with domestic 2618 alloy forgings, a material chosen for its exceptional strength and ability to handle high performance demands. They're specifically made for Chevy LT1 engines with direct injection, featuring a 4.00-inch stroke and a 4.125-inch bore, along with a -20cc dish to help achieve your desired compression ratio. Professional engine builders trust Manley for their commitment to durability and performance.

Manley pays close attention to the details that make a difference. The pistons feature proven cam and barrel skirt profiles, which help generate power while also being gentle on your cylinder walls. Their ring lands and grooves are machined to exacting standards, ensuring a better ring seal for improved power output. For added durability, these pistons come with premium chrome moly wrist pins, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the skirt, which is critical for consistent sealing under load.

When you're building a high-performance engine, especially one with direct injection, the quality of your internal components is paramount. These pistons are designed to be a solid foundation for your build, offering the strength and precision needed to reliably put down serious power. Keep in mind that these are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.