Eagle Ford 351W 4.000in Crank 2.750in Mains 6.250in I-Beam Rods 4.030in Pistons Balanced Assembly

This is a balanced rotating assembly from Eagle, specifically built for Ford 351 Windsor engines. It includes a 4.000-inch stroke forged 4340 steel crankshaft with 2.750-inch main journals, 6.250-inch long 4340 I-beam connecting rods fitted with 7/16-inch ARP 8740 bolts, Mahle forged 4032 aluminum pistons with a -20cc inverted dome dish, plasma-moly file-fit piston rings, and King XP rod and main bearings. This assembly is balanced from the factory, saving you a significant step in the engine building process.

The Pro Street rotating assemblies are well-suited for naturally-aspirated racing applications. The use of forged 4340 steel for both the crankshaft and connecting rods means these components are built to handle the stresses of higher performance engines. The Mahle pistons are forged from 4032 aluminum, which offers good thermal expansion characteristics for a tighter piston-to-wall clearance, contributing to quieter operation and improved ring seal. The included King XP bearings are designed for demanding applications, offering robust performance. The plasma-moly file-fit rings allow for precise gapping to match your specific engine build and intended use.

This assembly is balanced as a complete unit, which is crucial for smooth engine operation and longevity, especially at higher RPMs. It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and torque specifications.