Manley Performance MAN191832 4.050 in. Stroke 4340 Forged Crankshaft with 32-Tooth Reluctor Wheel

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. Stroke: 4.050 in. - Rod Journal: 2.000 in. - Reluctor Wheel: 32 Tooth - Bobweight: 1730 grams The stock timing crank gear may need to be chamfered to clear the larger radius on the snout of the crankshaft - All 2012 and earlier 58 tooth reluctor wheels have a tooth width of .170” - All reluctor wheels are attached with 4 fasteners.

• Multi-step heat treatment process and nitrided for added strength to already strong forged 4340 material
• Micro polished large radius journals (narrow rod bearings required)
• Gun drilled mains and lightened rod journals for weight reduction
• Stress relieved, shot-peened and 100% magnafluxed
• Dual keyed post for supercharger drive pulleys
• Counterweights fully profiled

The Manley Performance MAN191832 PRO SERIES stroker crankshaft is designed for Gen III small block HEMI engines. Manufactured from a forged 4340 steel material and featuring a 4.050-inch stroke, it can convert a 5.7L engine to 392 cubic inches and a 6.1L or 6.4L engine to 426 cubic inches. The crankshaft uses small block Chevy small-journal rod pins with 2.000-inch diameters and widths, providing taller side walls on the rod journals for improved oil control and reduced windage.

This crankshaft has counterweights profiled for 6.125-inch connecting rods and includes a 32-tooth reluctor wheel. Its multi-step heat-treated and nitrided forged construction is complemented by micro-polished large-radius journals, gun-drilled mains, lightened rod journals, stress relief, shot peening and 100% magnaflux inspection. The dual-keyed post is designed for supercharger drive pulleys. Narrow rod bearings are required. The stock timing crank gear may need chamfering to clear the larger crankshaft snout radius. All 2012 and earlier 58-tooth reluctor wheels have a 0.170-inch tooth width, and all reluctor wheels are attached with four fasteners.

What's Included: Manley Performance forged crankshaft with 32-tooth reluctor wheel.

Fitment: Designed for Gen III small block HEMI engines, including 5.7L, 6.1L and 6.4L applications as described above.

Features:

• Forged 4340 steel construction: Provides a strong foundation for high-performance Gen III small block HEMI engine builds.
• 4.050-inch stroke: Can increase a 5.7L engine to 392 cubic inches and a 6.1L or 6.4L engine to 426 cubic inches.
• Small-journal rod pins: Uses 2.000-inch rod journal diameters and widths for taller journal side walls, improved oil control and reduced windage.
• Performance-focused machining and treatment: Includes nitriding, micro-polished large-radius journals, gun-drilled mains, lightened rod journals, stress relief, shot peening, magnaflux inspection, profiled counterweights and a dual-keyed supercharger pulley post.
• Stroke: 4.050 inches.
• Rod journal diameter and width: 2.000 inches.
• Reluctor wheel: 32-tooth.
• Bobweight: 1,730 grams.
• Connecting rod profile: Counterweights are profiled for 6.125-inch connecting rods.
• Bearing requirement: Narrow rod bearings are required.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Clearance Item: t
Units Per Sku: 1