Wiseco Chevy Small Block 4.040in Bore 1.250in CH -13.00 CC Piston Set

If you're building a high-performance Chevrolet Small Block engine, this set of eight forged pistons from Wiseco is designed to handle some serious punishment. These pistons are made for the demands of racing and heavy-duty applications, where reliability under extreme stress is key. They feature a 4.040-inch bore and a 1.250-inch compression height, with a -13.00cc dish volume, making them suitable for specific compression ratio targets in performance builds.

Wiseco crafts these pistons from 2618 aluminum, a material known for its improved tensile strength, which is crucial for pistons that experience high temperatures and pressures. The machining process is precise, including anti-detonation grooves and features designed for better ring seal, helping to prevent blow-by and maintain cylinder pressure. They also come with an ArmorGlide skirt coating, which is applied to reduce friction, resist seizure, and contribute to quieter operation. The crown of each piston is fully machined, and they feature forced pin oiling to ensure the wrist pin stays well-lubricated under load.

This set is intended for builders who are pushing their engines hard, whether on the track or in a severe duty street application. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For optimal installation and performance, always refer to the manufacturer's specific build recommendations and torque specifications.