Lunati 70840001K1 Forged Crank and Connecting Rod Kit – Compatible with GM LS Gen III & IV 58X Engines

Description

Engine Stroke (in.):4.000 in.Material:Forged 4340 steelEngine Balance:InternalConnecting Rod Length (in.):6.125 in.Connecting Rod Beam Style:H-beamNotes:Features 58-tooth reluctor ring. Crankshafts requires narrow or chamfered main and rod bearings. Connecting rods feature ARP2000 series rod bolts.Crankshaft Info

• Constructed from 4340 non-twist steel forgings for durability and strength in high performance applications
• Lightening holes in rod journals reduce crankshaft inertia to enable increased acceleration
• All tolerances held to exacting standards for the highest quality products
• Nitride heat treated with micropolished journals

Connecting Rod Info

• Weight matched to ± 1 gram and utilize ARP 2000 7/16 in. rod bolts
• Constructed from 4340 forged steel for extreme strength
• Stress relieved to remove internal stresses from the steel
• Shot peened to increase longevity of metal
• Magnafluxed to identify any flawed materials
• Available for Chevy Small and Big Block, GM LS and Ford Small Block applications

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