Engines and Components› Engines, Blocks and Components

ATK ENGINES

NV3500- GAS - 4WD - 5 SPE

$1,866.60

SKU: A040 R2398A

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Special Order
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$100 Minimum Order
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Overview

The ATK HP98 Chevy 350 Base Engine 345HP (R2398A) is a V8 5.7L 350 Small Block engine. It is compatible with OE block 4-bolt main 1pc seal vehicles from 1987-2000 and features a rear sump 5qt oil pan. This engine produces 345 HP and 400 TQ, making it a powerful choice for compatible Chevrolet vehicles. Users must verify component compatibility as some modifications may be required for installation. This engine is designed for Chevrolet vehicles originally equipped with a 350 cubic inch small block engine.
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NV3500- GAS - 4WD - 5 SPE

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.

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Specifications

BrandATK ENGINES
Part NumberA040 R2398A

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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