Summit Racing SUM-180362 Crankshaft, Remanufactured, Nodular Iron, 3.622 in. Stroke, 24-Tooth Reluctor, Chevy, LS, Each - The rotating and pumping heart of every performance engine is the crankshaft. These Summit Racing Equipment remanufactured nodular crankshafts can help you build that beast of a machine from the inside out. Like the saying goes about books and covers, what counts is on the inside. Build your engine with quality parts like these crankshafts and you will have a performance vehicle built on a strong and durable foundation.