Wiseco Chevy Big Block 4.280in Bore 1.270in CH 9.50 CC Piston Set

Forged from 2618 aluminum, these Wiseco pistons are built for serious racers and builders tackling heavy to severe duty performance applications. The 4.280-inch bore size is specific for Chevy Big Block engines, and the 1.270-inch compression height works with many popular cylinder head and camshaft combinations. Wiseco machines these pistons in the USA, ensuring precision in every detail.

You'll find a lot of thought put into the details here. The crown is fully machined, and they've included precision ring grooves, an anti-detonation groove, and other features to improve ring seal. They also come with an ArmorGlide skirt coating, which helps reduce friction, resist seizure, and operate more quietly. The forced pin oiling design ensures the wrist pin stays well-lubricated, which is crucial under high stress.

This set includes eight pistons, along with premium rings, ready for your next engine build. Keep in mind these are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures.