Wiseco Chevy Big Block 4.500in Bore 1.120in CH 42.00 CC Piston Set

Forged from 2618 aluminum, these Wiseco pistons are built for serious performance in Chevy Big Block engines. The 4.500-inch bore size is a common specification for many performance Big Block builds, and the 1.120-inch compression height works with a variety of crankshafts to achieve your desired deck height. Wiseco machines these pistons in the USA, ensuring precise tolerances for critical components like the ring grooves, which feature anti-detonation designs and additional sealing enhancements to keep combustion pressure where it belongs.

Beyond the core forging and machining, these pistons come with an ArmorGlide skirt coating. This isn't just for looks; it helps reduce friction between the piston skirt and cylinder wall, which can lead to quieter operation and improved durability under high stress. The fully machined crown also means a clean, consistent combustion chamber shape, which is important for predictable power delivery. For builders aiming for heavy to severe duty applications, the forced pin oiling feature ensures the wrist pin receives adequate lubrication, a crucial detail for longevity in high-performance engines.

This set includes eight pistons, ready to be installed in your Chevy Big Block. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures.