Eagle Ford 351W 4.170in Crank 6.250in H-Beam -6.6cc Flat Top 4.040in Pistons Balanced Assembly

Starting with a forged 4340 steel crankshaft measuring 4.170 inches, this balanced rotating assembly from Eagle is built for serious performance, including racing applications with nitrous or forced induction. The crankshaft is paired with 6.250-inch H-beam connecting rods, known for their strength and reliability under high stress. These rods are secured with 7/16-inch ARP 8740 bolts, a popular choice for their durability and consistent clamping force.

The assembly includes Mahle 4.040-inch flat-top pistons made from 4032 forged aluminum, featuring a -6.6cc dish to help achieve your desired compression ratio. These pistons come with plasma-moly file-fit rings, allowing for precise gap setting to optimize sealing and performance. King XP rod and main bearings are also included, offering robust protection and smooth operation for the rotating assembly.

This balanced assembly is ready to be installed into your Ford 351W engine. Please note that this part is not CARB approved and cannot be shipped to California. It is also subject to California's Prop 65 warning.