Eagle Chevy 4.8/5.3 LS 3.900in Crank 58 Tth Rlctor 6.125in I-Beam 3.780in Pistons Rotating Assembly

The 3.900-inch stroke crankshaft in this Eagle rotating assembly is forged from 4340 steel, a strong material chosen for its ability to handle the stresses of high-performance, naturally aspirated racing applications. This assembly is specifically built for Chevy LS engines with 4.8L and 5.3L displacements, providing a solid foundation for a performance rebuild. It’s designed to be a direct fit for these popular LS variants, simplifying the installation process for mechanics and serious DIYers alike.

Beyond the robust crankshaft, this Pro Street assembly includes 6.125-inch long I-beam connecting rods, also forged from 4340 steel, paired with 3.780-inch bore pistons. The I-beam design offers a good balance of strength and weight for its intended use, while the specific piston bore size ensures compatibility with common LS engine configurations. This combination is engineered to work together seamlessly, ensuring balanced rotating mass and reliable power delivery when you put your foot down. Eagle has a well-known reputation for producing durable engine components, and this rotating assembly is no exception, offering a well-built package for those looking to extract more performance from their LS engine.

When undertaking an engine build of this caliber, it's important to note that this assembly is not CARB approved and cannot be shipped to California. Ensure you have all necessary supporting components, such as bearings, rings, and gaskets, before beginning your engine assembly. Proper balancing by a professional machine shop is also highly recommended for optimal performance and longevity, especially when dealing with a complete rotating assembly like this.