Wiseco Chevy LT1 4.125in Bore 1.105in CH -6.90 CC Piston Set

If you're rebuilding the engine in your Chevrolet LT1 and aiming for serious performance, a strong set of pistons is where you start. This Wiseco Professional Series piston set is built for those heavy-duty race applications where reliability under extreme stress is non-negotiable. Each piston is forged and machined right here in the USA from 2618 aluminum, a material chosen for its improved tensile strength, which is crucial for handling the high pressures and temperatures found in performance engines.

Wiseco has packed these pistons with features to ensure they perform and last. You'll find precision ring grooves designed for better sealing, anti-detonation grooves to help prevent damage, and features that further improve ring seal. The crown of each piston is fully machined, and they come with forced pin oiling to keep the wrist pins lubricated. Plus, the ArmorGlide skirt coating helps reduce friction and noise while resisting seizure, making them suitable for severe duty builds.

This set includes eight pistons, each with a 4.125-inch bore and a -6.90cc dish volume, along with a 1.105-inch compression height and a 0.927-inch pin diameter. Keep in mind these are not CARB approved and cannot be shipped to California. For a robust engine build focused on performance and durability, this Wiseco piston set is a well-built choice.