Manley Chrysler 5.7L Hemi Forged Crankshaft 4.080 in. Stroke

When you're building a serious Hemi engine, you need a crankshaft that can handle the power and help you get the most out of your displacement. This Manley Performance Pro Series crankshaft is forged from 4340 alloy steel, a strong material that's up to the task for high-performance builds. It's designed to increase the displacement of your 5.7L Hemi to approximately 392 cubic inches, or your 6.1L/6.4L Hemi to around 426 cubic inches, giving you a significant boost in potential power.

Manley puts a lot of thought into making these crankshafts perform. They've gun drilled the mains and lightened the rod journals to cut down on weight, which helps the engine rev more freely and improves overall performance. The counterweights are carefully profiled for precise balance, ensuring smooth operation even at high RPMs. To make sure this crankshaft lasts, it goes through a multi-step heat treatment process and nitriding, which significantly enhances its strength and longevity. The journals themselves are micro-polished with large radii, reducing friction and further contributing to performance and durability.

Before any of these crankshafts leave Manley, they undergo rigorous quality checks. This includes stress relief, shot peening to relieve stress concentrations, and 100% magnafluxing to detect any potential flaws. This attention to detail means you're getting a well-built component ready for your performance build. If you're looking to significantly increase the displacement and power output of your Hemi engine, this stroker crankshaft is a solid choice.