Eagle Chevy LS1 4.000in Crank 24 Tth Reluctor 6.125in I-Beam Rods 3.900in Pistons Rotating Assembly

If you're building a performance LS1 engine for naturally-aspirated racing, this rotating assembly from Eagle is a solid choice. It includes a 4.000-inch forged 4140 crankshaft, 6.125-inch I-beam connecting rods made from 4340 steel with 7/16-inch ARP 8740 bolts, and 3.900-inch forged 4032 DSS pistons with an inverted dome design. This assembly is designed to handle the demands of racing applications where forced induction isn't being used.

The crankshaft is forged from 4140 steel for strength, and this specific assembly features a 24-tooth reluctor wheel, which is important for proper engine management system communication on many LS engines. The connecting rods are also forged from 4340 steel, a common choice for performance builds due to its good strength-to-weight ratio, and they come equipped with 7/16-inch ARP 8740 bolts, known for their reliability. The included pistons are forged from 4032 aluminum, which offers good thermal expansion characteristics for a tighter piston-to-wall clearance, and they feature an inverted dome design with a -15cc volume, which will affect your compression ratio depending on your cylinder head volume. The assembly also comes with plasma-moly file-fit rings, meaning you'll need to gap them to your specific application, and King XP rod and main bearings for smooth operation.

This rotating assembly is a significant step up for anyone looking to build a powerful LS1 engine. Remember that this assembly is not CARB approved and cannot be shipped to California. It's always a good idea to consult with your engine builder or refer to Eagle's detailed specifications to ensure this assembly meets your specific build goals and requirements.