Wiseco Chevy Big Block 4.320in Bore 1.760in CH 34.00 CC Piston Set

If you're building a high-performance Chevy Big Block engine for serious racing or heavy-duty applications, these Wiseco Professional Series pistons are a solid choice. They're designed from the ground up to handle the extreme demands of severe duty builds, offering a significant step up from stock components. Wiseco uses 2618 aluminum, which is known for its improved tensile strength, making these pistons well-suited for the stresses of racing.

These pistons feature a fully machined crown for precise combustion chamber volume, and the precision ring grooves are designed for improved sealing. You'll also find anti-detonation grooves and other features aimed at enhancing ring seal, which is critical for power and longevity under high cylinder pressures. The ArmorGlide skirt coating is applied to reduce friction, resist seizure, and contribute to quieter operation, all important factors when you're pushing an engine to its limits. Plus, the forced pin oiling helps ensure the wrist pins stay well-lubricated, even under extreme conditions.

This set includes eight pistons, each with a 4.320-inch bore and a 1.760-inch compression height, and they use a 0.990-inch pin diameter. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a race-focused build where durability and performance under severe stress are paramount, these Wiseco pistons are a well-built option.