Wiseco Chevy Big Block 4.630in Bore 1.155in CH 45.00 CC Piston Set

When you're building a serious performance engine for your Chevrolet Big Block, especially for heavy or severe duty racing applications, the pistons are a critical component. Wiseco's Professional Series forged pistons are designed for those demanding builds where reliability and strength are paramount. These aren't just off-the-shelf parts; they're crafted with custom-level features to handle the extreme stresses of racing.

These pistons are forged and machined right here in the USA from 2618 aluminum, which gives them improved tensile strength to resist deformation under high cylinder pressures. You'll find precision ring grooves, anti-detonation grooves, and other features designed to enhance ring seal, ensuring every bit of combustion energy is put to work. They also come with an ArmorGlide skirt coating that helps reduce friction and resist seizure, leading to quieter operation and better durability. The fully machined crown and forced pin oiling further contribute to their robust design, making them well-suited for the rigors of competition.

This set includes eight pistons, each designed for a 4.630-inch bore with a 1.155-inch compression height and a 0.990-inch pin diameter. Please note that these pistons are not CARB approved and cannot be shipped to California. If you're pushing the limits of your Big Block, these Wiseco pistons are built to help you remove those limits.