Wiseco BBC BIG CHF 3815 HEAD +15.6cc (6420B125) Piston Shelf Stock Kit

If you're building a serious performance Chevrolet Big Block engine, Wiseco's Professional Series forged pistons are a solid choice. This set is designed for a 4.625 inch bore and features a +15.6cc dish volume, which is a common configuration for many BBC builds. Wiseco makes these pistons in the USA from 2618 aluminum, a material chosen for its improved tensile strength, which is crucial for handling the extreme pressures of racing applications. They're fully machined, including the crown, and come with precision ring grooves, anti-detonation features, and additional ring seal improvements to ensure they perform reliably under heavy or severe duty conditions.

You'll also find an ArmorGlide skirt coating on these pistons. This isn't just for looks; it helps reduce friction, makes operation quieter, and offers resistance to seizure, all of which contribute to a longer-lasting, more efficient engine. The forced pin oiling feature is another detail that shows these pistons are built for demanding use, ensuring the wrist pin stays well-lubricated. This kit includes everything you need for a set of 8 cylinders, ready to be installed in your next high-performance build.

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.