Wiseco Chevy Big Block 4.605in Bore 1.120in CH 4.00 CC Piston Set

Forged from 2618 aluminum, these Wiseco Professional Series pistons are built for the demands of serious racing and heavy-duty engine builds. The 4.605-inch bore size is specific to certain Chevy Big Block applications, and the 1.120-inch compression height is a key measurement for setting up your engine's valve timing and piston-to-valve clearance. Each piston is machined in the USA, ensuring precise tolerances for optimal performance and durability.

Wiseco has packed these pistons with features to handle severe duty. You'll find precision ring grooves designed for improved sealing, along with anti-detonation grooves and other features that help maintain ring seal under extreme pressure. The fully machined crown is ready for your build, and the forced pin oiling system ensures the wrist pin stays well-lubricated. Plus, the ArmorGlide skirt coating helps reduce friction, resist seizure, and operate more quietly, which is a notable benefit in high-performance engines.

This set includes eight pistons, the wrist pins, and rings, making it a comprehensive solution for rebuilding your Chevy Big Block. Keep in mind 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.