Engines and Components› Engines, Blocks and Components

ATK ENGINES

CHEV 5.7 MARINE ENGINE

$2,758.40

SKU: A040 VMH4MB

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The ATK Engines Marine Engine Block is designed specifically for Chevrolet 5.7L and 350 cubic inch marine engines produced between 1996 and 2005. This engine block features a robust cast iron construction, ensuring durability and reliability in marine environments. With a compression ratio of 9:1, a bore of 4.00 inches, and a stroke of 3.48 inches, it delivers a horsepower output ranging from 260 to 300, making it suitable for various marine applications. Built with marine quality parts, this engine block is compatible with late model EFI systems and is remanufactured to meet high-performance standards. The externally balanced design and 8 bolt intake configuration enhance the engine's performance and stability. Additionally, the package includes essential components such as an oil pan and a plastic front cover with a sensor, ensuring a complete installation. ATK Engines has a long-standing reputation in the industry, with over 70 years of experience in engine building. Their state-of-the-art facilities and trained staff ensure that each engine block is crafted to provide maximum performance and long-term durability, making it a reliable choice for marine enthusiasts.
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CHEV 5.7 MARINE ENGINE

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

BrandATK ENGINES
Part NumberA040 VMH4MB

Videos

Joe's new atk performance chevy 350 V-8 5.7 liter crate engine 350 hp

Joe's new atk performance chevy 350 V-8 5.7 liter crate engine 350 hp

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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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