Eagle Chevy 409 Edelbrock 4.000in Crank 6.135in I-Beam Rods .365in 4.372in Pistons Rotating Assembly

This Eagle Pro Street Rotating Assembly gives you the core components to build a strong engine for your Chevy 409. Inside this kit, you'll find a 4.000-inch forged 4340 crankshaft and a set of 6.135-inch 4340 I-beam connecting rods. These rods are secured with 7/16-inch ARP 8740 bolts, known for their strength and reliability in high-performance applications. The assembly also includes 4.372-inch Ross forged 2618 pistons, which are designed with a .365-inch dome to achieve a 10:1 compression ratio when paired with the included components. You also get plasma-moly standard gap rings and King XP rod and main bearings to complete the rotating assembly.

This rotating assembly is specifically put together for naturally-aspirated racing use, meaning it's built to handle the demands of engines that don't use a turbocharger or supercharger. The use of forged 4340 steel for both the crankshaft and connecting rods means these parts are significantly stronger and more durable than cast components, offering a solid foundation for a performance engine build. The Ross pistons are also forged, ensuring they can withstand high combustion pressures and temperatures. The included ARP bolts are a popular choice for builders who need fasteners that won't fail under stress.

When assembling this rotating assembly, pay close attention to the manufacturer's specifications for bearing clearances and piston ring gap. The 10:1 compression ratio is a good balance for many performance street and strip applications, offering good power without being overly sensitive to fuel octane. Please note that this assembly is not CARB approved and cannot be shipped to California due to emissions regulations.