Eagle Chevy 327 SJ 3.250in Crank 2.300in Mains 5.700in H-Beam 5cc 4.040in Pistons Rotating Assembly

Starting with a forged 4340 steel crankshaft featuring a 3.250-inch stroke and 2.300-inch mains, this Eagle rotating assembly is built for serious performance. It’s designed to handle the demands of racing, including applications using nitrous oxide or forced induction. The assembly includes 5.700-inch H-beam connecting rods, which are 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.

Complementing the crank and rods are 4.040-inch Mahle forged pistons made from 4032 aluminum alloy. These pistons feature a 5cc dome volume, designed to work with specific cylinder head combinations to achieve desired compression ratios. They come equipped with plasma-moly file-fit piston rings, allowing for precise gap setting tailored to your engine build. This attention to detail in the piston and ring selection helps optimize sealing and performance.

To ensure smooth operation and durability, the assembly includes King XP series rod and main bearings. These bearings are recognized for their advanced materials and construction, offering excellent load-carrying capacity and wear resistance. This complete rotating assembly is a well-built foundation for a high-performance Chevy 327 small journal engine, ready for the rigors of competition.