Piston Kit

The Mahle 929908800T is a Mahle Motorsport PowerPak piston set designed for Big Block Chevy (BBC) 604 cubic inch crate engines. These forged 4032 aluminum alloy pistons feature a slipper skirt design, phosphate coating, and Grafal anti-friction skirt coating for enhanced durability and performance. They are flat-top pistons with an intake valve relief and a -3cc dome volume, contributing to a 10.4:1 compression ratio when used with compatible components. The pistons are engineered for a 4.500-inch bore, 4.750-inch stroke, and 6.660-inch rod length, utilizing a 0.990-inch pin diameter. This set is ideal for custom engine builds or as a direct replacement in GM 604 crate engines and is not compatible with standard small-block engines like the ZZ4 or LT1.