Wiseco Chevy Small Block 4.020in Bore 1.250in CH -1.70 CC Piston Set

This piston set includes eight forged pistons, designed for Chevrolet Small Block engines with a 4.020-inch bore. Each piston features a 1.250-inch compression height and a 0.927-inch pin diameter, with a -1.70 CC dish volume. These are Wiseco's Professional Series pistons, built for serious racers and builders who need top-tier performance and durability in heavy to severe duty race applications.

Crafted in the USA from 2618 aluminum, these pistons offer improved tensile strength for demanding conditions. They come with precision-machined ring grooves, anti-detonation grooves, and other features aimed at improving ring seal. The pistons also feature an ArmorGlide skirt coating, which helps reduce friction, resist seizure, and operate more quietly. The fully machined crown and forced pin oiling further contribute to their robust design for high-performance engines.

This set is intended for builders who are pushing the limits of their engines. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.