Engines and Components› Crankshafts and Components

Lunati

4340 Forged Crankshaft H-Beam Rod Kit 3.750 Stroke

$3,265.95

SKU: 37502VRK03LUN

Out of Stock
Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
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Overview

This kit features a 4340 forged crankshaft with a 3.750 stroke and H-beam rods. It includes Icon Forged Flat Top pistons and a 2-piece rear main seal. The assembly comes fully balanced and ready for installation.
Show original supplier description
The Lunati Voodoo rotating assembly kit is engineered for performance engine builds, specifically for Chevy SB applications aiming for a 383 stroker configuration. Upgrades are available for higher horsepower demands. This balanced, forged 383 rotating assembly includes a Lunati Voodoo forged crankshaft with a 3.750-inch stroke and 350 main, paired with Lunati Voodoo H-Beam rods featuring ARP 2000 bolts. It also comes with Icon Forged Pistons (2V, -4.9cc flat top) including wrist pins and locks, a performance file-to-fit ring set, and H-series race engine rod and main bearings. The assembly features a 2-piece rear main seal and is internally balanced, arriving fully balanced and ready for installation. Depending on the combustion chamber size (58cc, 64cc, or 76cc), the compression ratio ranges from 12.0:1 to 9.8:1.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandLunati
Part Number37502VRK03LUN
CategoryEngines and Components
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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