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The Manley Pro Series forged 4340 crankshaft for Ford 4.6L applications features a 3.800‑inch stroke and is forged from 4340 alloy steel. It incorporates lightened rod journals and profiled counterweights for optimized balance, and undergoes stress relief, shot peening, 100% magnaflux inspection, multi‑step heat treatment and nitriding with micro‑polished journals to boost strength and longevity.
Manley Ford 4.6L Pro Series Modular Crankshaft 3.800in Stroke
