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ATK High Performance Engines VMB3 Chevy 305 5.0L Marine Engine 230HP

Manufacturer

ATK High Performance Engines

<h3>About ATK High Performance Engines</h3><p>Few names carry as much weight in the performance engine world as <strong>ATK High Performance Engines</strong>. <a href="/3092-atk-high-performance-engines">ATK</a> traces its roots back to 1936, when its parent organization began remanufacturing engines from war-surplus vehicles in Holland. Decades of refinement followed, and in 2007 ATK launched its dedicated High Performance Division in Grand Prairie, Texas — a move that transformed the brand into a go-to source for serious engine builders across the country.</p><p>What sets ATK apart is a philosophy of reverse engineering. Rather than simply replicating OEM designs, ATK engineers identify known weaknesses in factory engine architecture and address them with upgraded components before a single engine leaves the shop. The result is an engine that often exceeds original factory durability and performance standards. Every ATK high-performance engine is backed by a <strong>24-month, unlimited-mile warranty</strong> — a standard that was groundbreaking when ATK first introduced it and remains a benchmark in the industry today.</p><h3>Engine Lineup: Something for Every Build</h3><p>ATK's catalog is built around flexibility. Whether you're dropping a freshly built motor into a classic muscle car, tackling a modern swap project, or building a dedicated track weapon, ATK offers a configuration to match. Their <a href="/3092-atk-high-performance-engines-engine-complete-assembly-15341">complete engine assemblies</a> span GM, Ford, and Chrysler platforms, with options ranging from stock-displacement rebuilds to stroker combinations pushing well past 600 horsepower.</p><p>The lineup is organized into two flagship series. The <strong>Signature Series</strong> targets street rods, restomods, and daily drivers that need reliable power without fuss. The <strong>Elite Series</strong> steps up the specification for racers and builders who demand premium components throughout. Within each series, buyers can choose between short block, mid-dress, and fully dressed complete engine configurations — making it straightforward to match the engine to the specific needs of any build.</p><p>GM enthusiasts will find an extensive selection covering small-block Chevy (SBC), big-block Chevy (BBC), and modern LS and Gen V LT platforms. Ford builders can choose from 302, 347 Stroker, and 351 Windsor combinations. Mopar fans are not left out either, with 360 Magnum and other Chrysler options rounding out the catalog.</p><h3>Beyond Complete Engines</h3><p>ATK's expertise doesn't stop at turnkey assemblies. The brand also offers a robust selection of <a href="/3092-atk-high-performance-engines-cylinder-heads-201280">cylinder heads</a> engineered to the same exacting standards as their complete engines. Cast from A356 aluminum alloy with optimized port designs, stainless steel valves, and manganese bronze valve guides, these heads are built to complement ATK engine packages or upgrade an existing short block. Coverage spans SBC, BBC, LS, LS3, and small-block Ford applications.</p><p>Builders looking to dress their completed rotating assembly will also find <a href="/3092-atk-high-performance-engines-engine-valve-cover-5772">engine valve covers</a> and <a href="/3092-atk-high-performance-engines-engine-cylinder-head-5304">individual cylinder head</a> components available — useful when completing a custom build or replacing worn top-end hardware. ATK also offers select drivetrain support components, including <a href="/3092-atk-high-performance-engines-power-steering-pump-7380">power steering pumps</a>, reflecting the brand's commitment to serving as a comprehensive powertrain resource rather than a single-product supplier.</p><h3>Why Builders Trust ATK</h3><ul><li>Industry-leading 24-month, unlimited-mile warranty on performance engines</li><li>Reverse-engineered designs that address known OEM weak points</li><li>Multiple build levels — short block, mid-dress, and complete — for budget and application flexibility</li><li>Broad platform coverage: GM, Ford, Chrysler, and more</li><li>Aluminum cylinder heads cast from A356 alloy with fully assembled valvetrain components</li><li>Elite and Signature Series options for both street and race applications</li></ul>

Part Number

VMB3
06/02/2036 5:36 PM
Sale Price

$2,792.98

In Stock (10)

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Usually delivered within 2 days

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Product Details

The ATK High Performance Engines VMB3 is a remanufactured marine engine designed for 1987-1995 Chevrolet applications. This 5.0L (305 cubic inch) V8 marine engine delivers 230 horsepower, providing reliable power for your boat or marine vessel.

Key Specifications:

  • Displacement: 5.0L / 305 cubic inches
  • Power Output: 230 horsepower
  • Cast iron engine block and cylinder heads for durability
  • Flat tappet camshaft design
  • Steel timing chain front cover
  • One-piece rear main seal configuration
  • Marine-grade components for saltwater and freshwater use

This complete marine engine is engineered to OEM specifications and includes all necessary internal components. The cast construction and marine-specific design ensure long-lasting performance in demanding aquatic environments. Compatible with Chevrolet marine applications from model years 1987 through 1995.

Great price and shipping was far better than other sites.

Quick simple and easy. Had no issues with this order so far

very good

Very easy hope they are the right parts!

So far so good. Tool was priced nicely

Good so far.

Received my package today. Shipping was fast and it was about the best price I could find for my Cam. I'll buy from them again.

Very easy

Easy Hassle free

Best price for a product I've been shopping for, for months, and when I saw Autoplicity having it for A LOT cheaper, putting the product in my sweet spot price wise, I didn't hesitate to order. <br><br>My bank was a little slow to post the transaction, and I was suprised to get a human on the phone with no effort to make sure my order was properly processed. The gentleman I spoke with was very friendly and promptly answered all my questions. <br><br>Only the $5 I'm getting back for this review can make this deal any better, as I have no suggestion for improving the transaction I made with them.

Best price for the optima battery I needed for my boat, I will definitely add this site to my favorites.

Pricing was good and customer service quick to respond.

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