Mahle MS Piston Set BBC 508ci 4.500in Bore 4.00in Stroke 6.135in Rod 0.990 Pin -3cc 8.9 CR Set of 8

This Mahle MS Piston Set is built for Big Block Chevy engines displacing 508 cubic inches, specifically designed for a 4.500 inch bore and a 4.000 inch stroke. You get a complete set of eight pistons, each featuring a 0.990 inch wrist pin and a -3cc dish volume, which helps achieve a compression ratio of 8.9:1 with a 4.000 inch stroke and a 6.135 inch connecting rod. These pistons are constructed from 4032 aluminum, a material known for its strength and thermal expansion properties, making it a solid choice for performance builds where durability and heat management are key. The flat-top design with a slight dish is optimized for standard deck height Big Block Chevy engines (9.800 inches).

Mahle is a well-known name in engine components, and this piston set reflects their commitment to producing reliable parts for demanding applications. The 4032 aluminum construction offers a good balance between strength and lighter weight compared to cast iron, while also providing improved thermal stability over older aluminum alloys. This means the pistons can handle the heat and stress of a performance engine without excessive expansion, helping to maintain proper clearances and reduce the risk of scoring. The included 0.990 inch wrist pins are a common size for many performance connecting rods, simplifying installation.

When rebuilding or upgrading your Big Block Chevy, choosing the right pistons is crucial for overall engine performance and longevity. This Mahle set is designed to work with a 6.135 inch connecting rod and a 4.000 inch stroke, contributing to the 508 cubic inch displacement. Keep in mind that these pistons are not CARB approved and cannot be shipped to California due to emissions regulations. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures to ensure optimal performance and durability.