Manley Performance Chevrolet Small Block 4.040 Inch Bore 1.280 Inch Compression Dome Platinum Series Pistons – Part 591740-8

Description

Upgrade your Chevrolet small block engine with the Manley Performance Platinum Series pistons, designed for high-performance and durability. Crafted from premium 2618 alloy forgings, these pistons deliver exceptional strength and resilience under demanding conditions. Their proven cam and barrel skirt profiles optimize power output while maintaining gentle contact with cylinder walls, ensuring longevity and consistent performance. Equipped with chrome moly wrist pins as standard, these pistons also offer optional upgrades to 9310 and Turbo Tuff/DLC alloys for enhanced durability in extreme applications.
Manley’s pistons feature precisely engineered ring lands and grooves, adhering to strict manufacturing standards that promote a superior ring seal and increased power output. The unique fixturing process allows for efficient skirt turning and ring groove machining in a single operation, ensuring the ring grooves are perfectly squared to the skirts, which contributes to better sealing and piston stability. Whether you’re building a high-performance street engine or a racing setup, these pistons are engineered to deliver reliable performance and consistent results.
The Platinum Series pistons are designed with a 4.040-inch bore diameter and a 1.280-inch compression height, making them a versatile choice for small block Chevrolet engines. They come with a dome shape that provides a 4.0cc displacement increase, enhancing compression ratios for improved power. Suitable for professional engine builders and tuners, these pistons comply with Prop 65 requirements and are ready for installation in your next build. Note that these pistons are not CARB approved and require acknowledgment of this status prior to purchase. They are shipped via air freight and are ideal for applications where maximum performance and durability are essential.

Features:

• 2618 alloy forgings for superior strength and performance

• Chrome moly wrist pins included, with upgrade options available

• Precisely machined ring lands and grooves for enhanced sealing

• Cam and barrel skirt profiles designed for power and cylinder wall friendliness

• Unique fixturing process ensures perfect ring groove to skirt squareness

• Dome shape with a 4.0cc increase for higher compression ratios

• Designed for small block Chevrolet engines with a 4.040-inch bore