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Engines and Components› Crankshafts and Components

Lunati

4.000-Inch Stroke Forged 4340 Steel Crankshaft

$2,859.99 $2,212.98 Save $647.01

SKU: LNT60240001

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In Stock
Ships by Jul 31
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30 Days Return
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Description

The Lunati Signature Series crankshaft, model LNT60240001, is engineered for Small Block Chevy applications. This crankshaft boasts a 4.000-inch stroke and is internally balanced, contributing to smoother engine operation. Constructed from robust forged 4340 steel, it is built to withstand demanding performance conditions. Key specifications include a 2.100-inch rod journal diameter and a 2.648-inch main journal diameter. This component requires the use of narrow bearings and features a 2-piece rear main seal for optimal sealing. The balancer bolt thread size is 7/16-20 inches. This crankshaft is sold individually.

MIA's Description

The Lunati LNT60240001 is a Signature Series crankshaft designed for Small Block Chevy engines. It features a 4.000-inch stroke and internal balance, constructed from forged 4340 steel for durability. This crankshaft utilizes a 2-piece rear main seal and requires narrow bearings.

Fitment

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Specifications

BrandLunati
Part NumberLNT60240001
CategoryEngines and Components

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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