Manley 4.6L Ford Modular (2/4 Valve) 3.700in Bore 1.220in CD 18cc Dish Pistons Extreme Duty-Set of 8

This set includes eight Manley Extreme Duty forged pistons, designed for 4.6L Ford Modular engines with 2 or 4 valves. These pistons feature a 3.700-inch bore and an 18cc dish, making them suitable for builds where a specific compression ratio is targeted. They come standard with premium Chrome Moly wrist pins, and Manley uses domestic 2618 alloy forgings for superior strength and performance. The pistons are finished with moly skirt coatings for improved durability and reduced friction.

Manley's approach to piston design focuses on both power and longevity. The pistons feature proven cam and barrel skirt profiles, which help generate substantial power while being gentle on cylinder walls during operation. Their manufacturing process includes unique fixturing that allows for skirt turning and ring groove machining in a single operation. This ensures ultimate squareness between the ring grooves and the skirt, leading to enhanced ring seal and more power. The ring lands and grooves themselves are machined to strict standards, further contributing to that improved ring seal.

These pistons are a solid choice for serious engine builders and tuners looking for robust components. They are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.