Manley 190130 - 4340 Crankshaft Non-Twist Forging, Small Block Chevy 4.000" Stroke 350 Main, 2.100 Rod Journal, Bobweight 1800 grams, Weight 49-51lbs

Manley Small Block Chevy 4.000" Stroke 4340 Non-Twist Forged Crankshaft, 350 Main Journal (2.450"), 2.100" Rod Journal, Bobweight 1800 grams, 49-51lbs 190130

Heat Treated, Stress Relieved, Shot peened, nitrided and 100% magnafluxed

Micro polished large radius journals (narrowed rod bearings required)

Note: Manley crankshafts are not intended for use with highly boosted roots style cog belt superchargers.