Wiseco Chrysler Big Block Mopar 383/400/440 4.375 Bore 4.15 -6cc Volume Piston Set

If you're rebuilding the heart of your Chrysler Big Block Mopar 383, 400, or 440 engine for serious performance, a set of Wiseco Professional Series pistons is a solid choice. These aren't just off-the-shelf parts; they're built from the ground up for demanding applications where durability and power are paramount. Wiseco starts with 2618 aluminum, a material known for its improved tensile strength, which is crucial for handling the stresses of high-performance engines. Each piston is forged and machined right here in the USA, ensuring precise manufacturing for a perfect fit and function within your engine.

You'll find features like precision ring grooves, anti-detonation grooves, and other ring seal enhancements designed to keep combustion contained and efficient. The piston crowns are fully machined for a clean, consistent surface, and they include forced pin oiling to keep the wrist pin lubricated under extreme conditions. Wiseco also applies their ArmorGlide skirt coating, which helps reduce friction, minimize wear, and operate more quietly, even under heavy load. These pistons are specifically designed and built to withstand heavy to severe duty performance builds, giving you the confidence to push your engine's limits.

This set includes eight pistons, each with a 4.375-inch bore and a -6cc volume, designed for a 1.865-inch compression height and a 0.990-inch pin diameter. Please note that due to emissions regulations, these pistons are not CARB approved and cannot be shipped to California.