This Mahle MS Piston Set is designed specifically for Small Block Chevy engines with a 409 cubic inch displacement, offering performance and reliability for your engine rebuild or upgrade. The pistons feature a flat top design with gas porting and asymmetrical valve pockets to optimize airflow and combustion efficiency. Crafted from high-quality materials, each piston has a bore diameter of 4.165 inches, making it suitable for engines requiring precise sizing. The set includes eight pistons with a 3.5/3.75 inch stroke, a 6.125 inch connecting rod length, and a .927 inch pin diameter, ensuring robust performance for demanding applications. With a compression ratio of approximately 12.6:1, these pistons are ideal for high-performance street or racing engines. The pistons weigh around 450 grams each and have a volume of -8.9cc to fine-tune engine compression and performance. Built by Mahle, a trusted name in automotive components, these pistons are engineered to meet high standards of durability and precision. Please note that these pistons are not carb-approved and require carb acknowledgment during installation. They are classified as automotive parts and are not suitable for air freight, but they do not require LTL freight shipping. Prop 65 compliance is indicated for safety and regulatory adherence. Whether you're rebuilding or customizing your Small Block Chevy engine, these Mahle pistons deliver reliable performance and quality craftsmanship to help you achieve optimal horsepower and efficiency.
Features:
- Flat top design with gas porting for improved combustion efficiency
- Asymmetrical valve pockets for enhanced airflow
- High-quality material construction for durability
- Designed for 409 cubic inch Small Block Chevy engines
- Bore diameter of 4.165 inches for precise fit
- Includes set of 8 pistons with a 3.5/3.75 inch stroke and 6.125 inch rods
- Approximate compression ratio of 12.6:1 for high-performance applications
- Lightweight at approximately 450 grams per piston
- Prop 65 compliant for safety
