Wiseco Chevy Big Block 4.530in Bore 1.270in CH 45.00 CC Piston Set

If you're rebuilding a Chevrolet Big Block engine for serious racing or heavy-duty performance, a strong set of pistons is where you start. This Wiseco Professional Series piston set is built for those demanding applications, designed to handle the stress of severe duty builds. Each piston is forged and machined right here in the USA from 2618 aluminum, a material chosen for its improved tensile strength under high loads.

Wiseco has packed a lot of thought into these pistons. You'll find precision ring grooves, an anti-detonation groove, and other features aimed at improving ring seal, which is critical for power and engine longevity. The fully machined crown ensures accuracy, and the forced pin oiling helps keep the wrist pin properly lubricated. Plus, they come with an ArmorGlide skirt coating that helps reduce friction, resist seizure, and even makes operation quieter.

This set includes eight pistons, each designed for a 4.530-inch bore with a 1.270-inch compression height and a 0.990-inch pin diameter. Keep in mind these are not CARB approved and cannot be shipped to California. For builders aiming for the top tier of performance, these pistons are a solid foundation.