Manley Crankshaft Crank-4340 Forge 4.050 Stroke - Sbc Journal - 191958NB
Manley Performance “PRO SERIES” stroker crankshaft designed for the Gen III small block HEMI engine. Manufactured from a premium 4340 steel forging these cranks feature a 4.050” stroke which can turn your 5.7L into a 392 c.i. engine and your 6.1L/6.4L into a 426 c.i. engine. The Manley 4.050” stroke HEMI crankshaft features small block Chevy small journal (2.000") crank pin diameters and widths. This provides taller "side walls" on the crankshaft rod journals for better oil control and reduced windage. Counterweights are profiled for 6.125" connecting rods.
Multi-step heat treatment process and nitrided for added strength to already strong forged 4340 material
Stress relieved shot-peened and 100% magnafluxed
Micro polished large radius journals (narrow rod bearings required)
Dual keyed post for supercharger drive pulleys
Gun drilled mains and lightened rod journals for weight reduction
Counterweights fully profiled
Manley Performance was founded by Hank Manley in 1966
his desire for speed and to win led him to build his own racing engines. Since that time Manley has continued to evolve
using the knowledge they have gained since the beginning and building on that to continue to bring the best engine components to the market. The goal at Manley Performance remains laser focused on designing and producing the highest quality internal engine components at extremely competitive prices coupled with excellent customer service.
