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

If you're building a naturally-aspirated LS1 engine for racing, this Eagle Pro Street rotating assembly is a solid foundation. It bundles together the core components you need to get your short block started, designed to handle the demands of the track.

This assembly starts with a 4.000-inch stroke forged 4140 crankshaft, featuring a 24-tooth reluctor wheel for LS1 compatibility. Paired with the crank are 6.125-inch I-beam connecting rods made from strong 4340 steel, secured with 7/16-inch ARP 8740 bolts. The pistons are forged 4032 DSS units with an inverted dome design, measuring 3.900 inches in diameter and featuring a -29cc dish. They come with plasma-moly file-fit rings, allowing you to set your own ring gap for optimal performance. King XP rod and main bearings are included to ensure smooth operation and durability.

This rotating assembly is intended for racing applications and is not CARB approved, meaning it cannot be shipped to California. Ensure you have the necessary tools and knowledge for proper installation, or consult a professional mechanic to build your LS1 engine with confidence.