Manley Performance Chevrolet Small Block 4.040-inch Bore Piston Set Part Number 591730-8

Our signature "Platinum Series" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability. Manley Piston Set, PIST-4.030/1.280CD/FT.

• Chrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff/DLC alloys, providing additional durability.
• Unique Fixturing: Manley's unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.
• Exacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and more power.
• Cam and Barrel Profiles: Our pistons boast cam and barrel (skirt) profiles that generate substantial power while being gentle on cylinder walls.
• 2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance.

The Manley Performance Chevrolet Small Block piston set, part number 591730-8, is engineered for high-performance engine builds and tuning applications. Crafted with premium 2618 alloy forgings, these pistons deliver exceptional strength and durability for demanding automotive environments. The design features proven cam and barrel (skirt) profiles that optimize power output while maintaining gentle contact with cylinder walls, promoting longevity and consistent performance. Each piston includes moly skirt coatings on select part numbers, enhancing wear resistance and reducing friction for smoother operation. These pistons are ideal for professional engine builders seeking reliable components that meet rigorous standards for power and durability.
Manley's unique fixturing technology ensures precise machining of skirt turning and ring groove creation in a single operation, resulting in exceptional ring land and groove squareness. This precision enhances ring seal, which directly translates into increased horsepower and efficiency. The set includes chrome moly wrist pins as standard, with options for upgraded materials such as 9310 and Turbo Tuff/DLC alloys, providing additional strength for high-stress applications. The pistons are designed to accommodate a 4.040-inch bore and 1.280-inch compression height, making them suitable for a variety of performance engine builds.
Constructed with strict adherence to quality standards, these pistons contribute to improved combustion efficiency and power delivery. As a part of the Manley Platinum Series, they are trusted by professional tuners and engine builders who demand superior performance and reliability. Please note that these pistons are not CARB approved, requiring acknowledgment of this fact during installation. Suitable for automotive applications, this set is a vital component for anyone seeking to enhance the performance of their Chevrolet small block engine.

Features:

• 2618 alloy forgings for superior strength and performance

• Proven cam and barrel (skirt) profiles for power and longevity

• Moly skirt coatings on select part numbers for reduced friction

• Unique fixturing ensures precise ring groove and skirt machining

• Exacting ring lands and grooves for enhanced ring seal

• Chrome moly wrist pins with upgrade options for added durability

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1