The Manley Rotating Assembly for SBC 355 (3.480 stroke, -4cc flat) is a matched crank, rod, and piston system built to deliver strength, balance, and consistent operation in high-RPM small-block engines. Precision forging and tight tolerances reduce friction and improve load handling. It pairs a lightweight 4340 forged crank with 4340 H-beam rods (ARP 8740 or optional ARP 2000) and 2618 forged aluminum pistons with chrome-moly wrist pins. Also available in a Ford 4.6L (3.543 stroke, 3.572 piston, -6.5cc dish) variant.
Manley Rotaing Assembly, FORD 4.6L 3.543 STROKE/3.572/-6.5cc DISH
Features & Benefits
4340 Forged steel H-Beam connecting rods with 7/16 ARP 8740 or optional ARP 2000 cap screws
Horsepower range is 750 with the ARP 8740 and 1,500 with the optional ARP 2000 cap screws
2618 Forged aluminum Platinum Series pistons with Premium Chrome Moly wrist pins
Lightweight 4340 forged steel crankshaft
Manufacturer Description
Manley Rotating Assemblies are engineered as complete, matched systems to deliver maximum strength, balance, and performance in high-demand engines. Featuring precision-forged crankshafts, high-strength connecting rods, and premium pistons, each component is designed to work together seamlessly for optimal durability and efficiency. Tight tolerances and careful material selection ensure excellent load handling, reduced friction, and consistent performance under extreme RPM and cylinder pressure. By combining Manley’s proven rod, piston, and crank technologies into a unified package, these assemblies provide the reliability and confidence engine builders demand when pushing the limits of power.