{"id":227279,"date":"2025-11-02T16:12:03","date_gmt":"2025-11-02T23:12:03","guid":{"rendered":"https:\/\/powerdriveengines.com\/?post_type=product&p=227279"},"modified":"2025-11-02T16:22:20","modified_gmt":"2025-11-02T23:22:20","slug":"ls3-525hp-engine","status":"publish","type":"product","link":"https:\/\/powerdriveengines.com\/index.php\/product\/ls3-525hp-engine\/","title":{"rendered":"Ls3 525hp engine"},"content":{"rendered":"

Rebuilt LS3 525HP Engine with Transmission Wiring Harness & ECM \u2013 Complete Plug-and-Play GM Power<\/strong><\/h2>\n

Bring your vehicle to life with the legendary GM LS3 525HP 6.2L V8 engine<\/strong>, now available as a fully rebuilt performance package<\/strong> complete with transmission wiring harness and ECM (Engine Control Module)<\/strong>. Designed for reliability, precision, and pure horsepower, this engine setup delivers factory-rated 525 horsepower and 486 lb-ft of torque<\/strong> \u2014 all rebuilt and upgraded for long-term durability and unmatched performance.<\/p>\n

Perfect for street performance, classic restorations, or custom projects, our rebuilt LS3 engine<\/strong> is meticulously inspected, machined, and assembled by expert technicians using top-tier components. This engine package includes everything you need for a straightforward installation and reliable startup.<\/p>\n

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Complete LS3 Power Package Includes:<\/strong><\/h3>\n
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  • \n

    Rebuilt LS3 6.2L V8 Engine (525HP \/ 486 lb-ft Torque)<\/strong><\/p>\n<\/li>\n

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    Transmission Wiring Harness<\/strong> \u2013 Pre-configured for quick, plug-and-play connection<\/p>\n<\/li>\n

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    ECM (Engine Control Module)<\/strong> \u2013 Professionally tuned for optimal performance<\/p>\n<\/li>\n

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    All major gaskets, seals, and sensors replaced or upgraded<\/strong><\/p>\n<\/li>\n

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    Balanced rotating assembly<\/strong> for smooth and efficient operation<\/p>\n<\/li>\n<\/ul>\n

    \n

    Performance & Reliability<\/strong><\/h3>\n

    Every LS3 rebuild goes through a rigorous process to ensure OEM or better specifications<\/strong>. From the high-flow aluminum cylinder heads to the forged pistons and rods, every detail is precision-engineered for maximum performance and longevity. The ECM is calibrated<\/strong> to ensure smooth throttle response, stable idling, and enhanced fuel efficiency.<\/p>\n

    The transmission wiring harness<\/strong> ensures seamless communication between the ECM and your drivetrain, making installation easier and faster. Whether you\u2019re upgrading your classic Camaro, Corvette, GTO, Chevelle, or custom hot rod<\/strong>, this LS3 powertrain delivers a perfect balance of brute strength and modern reliability.<\/p>\n

    \n

    Technical Specifications:<\/strong><\/h3>\n
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    • \n

      Engine Type:<\/strong> GM LS3 6.2L V8 (Rebuilt)<\/p>\n<\/li>\n

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      Horsepower:<\/strong> 525 HP<\/p>\n<\/li>\n

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      Torque:<\/strong> 486 lb-ft<\/p>\n<\/li>\n

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      Fuel System:<\/strong> Electronic Fuel Injection (EFI)<\/p>\n<\/li>\n

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      Block Material:<\/strong> Aluminum<\/p>\n<\/li>\n

    • \n

      Heads:<\/strong> Aluminum High-Flow Design<\/p>\n<\/li>\n

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      ECM:<\/strong> Pre-programmed GM-style control module<\/p>\n<\/li>\n

    • \n

      Harness:<\/strong> Complete plug-and-play transmission wiring harness<\/p>\n<\/li>\n<\/ul>\n

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      Why Choose Our LS3 525HP Engine Package?<\/strong><\/h3>\n
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        Turnkey Solution:<\/strong> Comes ready with ECM and harness for simplified installation.<\/p>\n<\/li>\n

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        Quality Assurance:<\/strong> Each engine is tested and verified for compression, oil pressure, and performance output.<\/p>\n<\/li>\n

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        Durability:<\/strong> Built using high-performance parts for street and track reliability.<\/p>\n<\/li>\n

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        Expert Craftsmanship:<\/strong> Rebuilt by specialists with years of LS engine experience.<\/p>\n<\/li>\n

      • \n

        Nationwide Availability:<\/strong> We ship anywhere in the USA with professional packaging and fast delivery.<\/p>\n<\/li>\n<\/ul>\n

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        Perfect For:<\/strong><\/h3>\n
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        • \n

          LS swaps and performance upgrades<\/p>\n<\/li>\n

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          Restomod and muscle car builds<\/p>\n<\/li>\n

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          Custom hot rods and street performance cars<\/p>\n<\/li>\n

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          Track or high-performance daily drivers<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

           <\/p>\n

          rebuilt LS3 525HP 6.2L V8 engine<\/strong>. Expertly restored for maximum performance, reliability, and torque. Perfect for muscle cars, hot rods, and restomod projects. Fast USA shipping available!<\/strong><\/p>\n","protected":false},"featured_media":227281,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[210],"product_tag":[],"class_list":{"0":"post-227279","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-rebuilt-ls-engines","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"yoast_head":"\nRebuilt LS3 525HP Engine for Sale | High-Performance LS Engine<\/title>\n<meta name=\"description\" content=\"Buy a rebuilt LS3 525HP engine with 6.2L V8 power and 525 horsepower. Precision-built for performance cars, muscle builds. 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