Manley Chevrolet Big Block Piston Set - 4.530in Bore 1.270in CH, -20.00 CC

If you're building a high-performance Chevrolet big block engine, this Manley Performance piston set is a solid choice. These pistons are designed for a 4.530-inch bore and feature a -20.00cc dish volume, which is crucial for setting your compression ratio. Manley uses domestic 2618 alloy forgings, known for their strength and ability to handle the stresses of a performance engine. This material is a step up from cast aluminum, offering better durability and resistance to detonation.

You'll find that Manley pays close attention to the details that make a difference. The cam and barrel skirt profiles are carefully shaped to help the piston move smoothly in the cylinder, reducing wear on the cylinder walls while still allowing the piston to generate power. The ring lands and grooves are machined to very tight tolerances, which is essential for a good seal between the piston rings and the cylinder wall. This improved seal means better compression, more power, and less oil burning. These pistons come standard with premium chrome moly wrist pins, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the piston skirt, a detail that many professional engine builders rely on.

This set includes pistons, tool steel wrist pins, and moly skirt coatings on select part numbers, contributing to improved durability and reduced friction. Keep in mind that these are not CARB approved and cannot be shipped to California. For serious engine builds, Manley pistons are a popular choice among professional engine builders and tuners looking for reliable performance.