Eagle Chevy 350 3.750in Crank 5.700in I-Beam Rods -18cc 4.040in Pistons Balanced Assembly

If you're rebuilding the heart of your Chevy 350 for serious naturally-aspirated racing, a balanced rotating assembly like this one from Eagle is a solid foundation. It takes the guesswork out of matching critical components, ensuring everything works together smoothly right out of the box.

This assembly starts with a 3.750-inch forged 4140 crankshaft, paired with 5.700-inch I-beam connecting rods made from strong 4340 steel. Those rods are secured with 7/16-inch ARP 8740 bolts, known for their reliability under stress. For the pistons, you get 4.040-inch forged 4032 Icon pistons with an -18cc inverted dome design, which helps achieve a specific compression ratio when paired with the right cylinder heads. The assembly also includes plasma-moly file-fit piston rings and King XP rod and main bearings, all balanced as a complete unit.

Because this assembly is balanced from the factory, it saves you a significant step and ensures proper operation. Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for installation details and ensure all other engine components are compatible for optimal performance and longevity.