Buy ATK High Performance GM 489 Stroker 565 HP Stage Online
Transform your vehicle’s performance with the ATK High Performance GM 489 Stroker 565 HP Stage 2 engine, engineered for those who demand massive torque and relentless reliability. This dyno-tested powerhouse is the ultimate drop-in solution for high-performance street and marine applications. Order today from Electrical Marine Solutions and experience the pinnacle of Big Block power.
When it comes to raw American muscle, nothing beats the displacement and airflow of a precision-built Big Block. The ATK High Performance GM 489 Stroker 565 HP Stage 2 is crafted for enthusiasts who want to skip the machine shop headaches and go straight to the finish line.
Whether you are upgrading a classic muscle car or looking for a high-output marine engine, this 489 Stroker delivers a broad power band that pulls hard from low RPMs all the way to the top end. Unlike standard 6.2 LS3 crate engines or smaller 6.0 LS engines, this Big Block stroker provides the massive displacement and “old school” torque feel that modern small blocks simply can’t replicate.
Built with hand-picked, premium components, this engine solves the common problem of “parts matching” by providing a fully synchronized rotating assembly and valvetrain. It’s not just an engine; it’s a performance-ready heart for your project, ensuring you spend less time in the garage and more time on the road or water.
Overview
- Brand: ATK High Performance Engines
- Manufacturer’s Part Number: HP411PC
- Part Type: Crate Engines
- Product Line: ATK High Performance GM 489 Stroker 565 HP Stage 3 Long Block Crate Engines
- Summit Racing Part Number: HPE-HP411PC
- UPC: 653517517853
- Crate Engine Family: Chevy Big Block
- Actual Engine Displacement: 8.0L/489
- Crate Engine Cylinder Head Material: Aluminum
- Engine Block Material: Cast iron
- Advertised Compression Ratio: 10.0:1
- Assembled: Yes
- Engine Balance: Internal
- Cam Style: Hydraulic roller, OE roller
- Rear Main Seal Style: 1-piece
- Intake Manifold Included: Yes
- Intake Manifold Style: Carbureted
- Cylinder Heads Included: Yes
- Carburetor Included: Yes
- Throttle Body Included: No
- Distributor Included: Yes
- Oil Pan Included: Yes
- Valve Covers Included: Yes
- Timing Cover Included: Yes
- Water Pump Included: Yes
- Harmonic Balancer Included: Yes
- Flexplate Included: Yes
- Flywheel Included: No
- Air Cleaner Included: No
- Spark Plugs Included: Yes
- Spark Plug Wires Included: Yes
- Computer Included: No
- Wiring Harness Included: No
- Supercharger Included: No
- Remanufactured: Yes
- Quantity: Sold individually.
ATK High Performance GM 489 Stroker 565 HP Stage 3 Long Block Crate Engines
ATK High Performance GM 489 Stroker 565 hp Stage 3 long block crate engines are new versions based off the later model Gen V and require an electric fuel pump. ATK Stage 3 or complete dressed engines are designed for those wanting to drop the engine into their project and fire it up. They have outfitted the engines as completely as possible to save you time and headaches.
Typically, ATK GM 489 Stroker 565 hp complete dressed engines consist of:
- Seasoned OE block with 4-bolt mains
- Nodular iron crankshaft
- 4340 forged I-beam connecting rods
- Forged pistons
- Chromoly piston rings
- Hydraulic roller camshaft
- Performance aluminum cylinder heads
- Billet aluminum rocker arms
- Valve covers
- Timing set and cover
- Oil pan, oil pump, and pick-up tube
- Performance intake manifold
- Distributor
- Long water pump
- Front damper
- Flexplate
- 780cfm carbureto
- Spark plugs and wires
Product Specifications
- Displacement: 489 Cubic Inches (Stroked GM Big Block)
- Horsepower: 565 HP
- Torque: Approx. 550-570 lb-ft
- Block: Seasoned GM 4-Bolt Main
- Crankshaft: 4.250″ Stroke Steel or Node Iron
- Cylinder Heads: High-Flow Aluminum
- Camshaft: Performance Hydraulic Roller
- Compression Ratio: 10.0:1 (Pump Gas Friendly)
- Compatibility: Direct fit for most GM Big Block mounts
Benefits / Why Choose This Product?
Choosing the ATK High Performance GM 489 Stroker 565 HP Stage means choosing peace of mind. While many modern builders look toward the LS3 6.2 crate engine for its fuel injection, the 489 Stroker offers a level of raw torque that is unmatched for heavy-duty performance.
- Ready-to-Run: Save weeks of labor; this engine comes professionally assembled.
- Durability: Built to handle high-stress environments, perfect for both asphalt and marine use.
- Value: Get 565 HP at a price point that rivals custom-built 6.2 LS engines.
FAQs
Is this engine suitable for marine use?
Yes, with appropriate marine-grade accessories, the 489 Stroker is an excellent choice for high-performance boating.
Does it require high-octane racing fuel?
No, this Stage 2 build is designed to run efficiently on 91-93 octane pump gas.
What is the warranty on ATK engines?
ATK offers a comprehensive limited warranty; please check our “Warranty” section for specific coverage details.
Conversion Elements
- High Demand: Due to the popularity of the GM 489 Stroker series, stock levels are limited.
- Secure Checkout: Your purchase is protected by industry-standard encryption.
- Expert Support: Our technicians are available to help with compatibility and installation questions.
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