Wiseco 4.630 Big Block Chevy Quick 16 Severe Duty +48.7cc Dome 1.120CH Piston Set

Starting with a 4.630-inch bore, these Wiseco pistons are forged from 2618 aluminum right here in the USA, a material chosen for its improved tensile strength. This is a critical starting point for any serious big block Chevy build where durability under extreme conditions is paramount. These aren't just any pistons; they're part of Wiseco's Professional Series, meaning they're packed with features typically found only in custom racing applications, designed to handle heavy to severe duty performance demands.

You'll find precision ring grooves, an anti-detonation groove, and other features aimed at improving ring seal, which is vital for consistent power and engine longevity. The crown is fully machined, and the pistons come with forced pin oiling to ensure the wrist pins stay well-lubricated. Wiseco also applies an ArmorGlide skirt coating, which helps reduce friction, resist seizure, and contribute to quieter operation. This comprehensive approach means these pistons are built to remove limits in your race build.

This set includes eight pistons, each with a +48.7cc dome volume and a 1.120-inch compression height, along with a 0.990-inch pin diameter. Please note that these pistons are not CARB approved and cannot be shipped to California.