Wiseco Chevy Big Block 4.500in Bore 1.270in CH 48.70 CC Piston Set

If you're building a serious performance Chevy Big Block engine, Wiseco's Professional Series forged pistons are a solid choice. These pistons are made in the USA from 2618 aluminum, which gives them improved tensile strength for handling the demands of heavy to severe duty race applications. The 4.500 inch bore size is common for many Big Block builds, and the 1.270 inch compression height is a key measurement for setting up your camshaft and valvetrain correctly.

Wiseco puts a lot of thought into the details with these pistons. You'll find precision machined ring grooves, an anti-detonation groove, and other features designed to improve ring seal, which is critical for both power and engine longevity. They also come with an ArmorGlide skirt coating that helps reduce friction and resist seizure, while also making the engine run quieter. The fully machined crown and forced pin oiling are further evidence of their focus on durability and performance in demanding situations.

This set includes eight pistons, rings, and is designed for a 0.990 inch pin diameter. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For builders aiming for maximum performance and reliability in a race-focused Big Block Chevy, these Wiseco pistons are a well-built option.