{"id":2521,"date":"2026-07-15T14:31:01","date_gmt":"2026-07-15T14:31:01","guid":{"rendered":"https:\/\/titanparthub.com\/?post_type=product&p=2521"},"modified":"2026-07-15T14:31:14","modified_gmt":"2026-07-15T14:31:14","slug":"chevrolet-performance-ls3-6-2l-crate-engine-525-hp-19435104","status":"publish","type":"product","link":"https:\/\/titanparthub.com\/?product=chevrolet-performance-ls3-6-2l-crate-engine-525-hp-19435104","title":{"rendered":"Chevrolet Performance LS3 6.2L Crate Engine \u2013 525 HP | 19435104"},"content":{"rendered":"

Product Overview<\/strong><\/h3>\n

Step up to the pinnacle of modern V8 performance with the Chevrolet Performance LS3 6.2L crate engine. As the factory-engineered heart of the C6 Corvette and Camaro SS, this turn-key assembly delivers a certified 525 horsepower and 486 lb-ft of torque straight from the crate. This isn\u2019t a modified or rebuilt engine; it\u2019s a brand-new, complete assembly built to the exacting standards of General Motors, offering unmatched reliability and a seamless installation experience for your project.<\/p>\n

The LS3\u2019s all-aluminum construction keeps weight down, while its high-flow, rectangular-port cylinder heads\u2014borrowed from the legendary LS7\u2014and aggressive hydraulic roller camshaft ensure breathtaking power from idle to redline. This engine comes remarkably complete, including the electronic fuel injection intake manifold, 90mm throttle body, fuel injectors, ignition coils with wires, and even exhaust manifolds. This \u201cconnect-and-play\u201d configuration drastically reduces the parts list and complexity for your swap.<\/p>\n

Whether you\u2019re modernizing a classic car, building a pro-touring masterpiece, or creating a high-performance kit car, the Chevrolet Performance LS3 is the benchmark for power, weight, and modern engineering. It represents a worry-free investment in genuine GM quality and performance.<\/p>\n

Technical Specifications<\/strong><\/h3>\n
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<\/div>\n
<\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Specification Category<\/th>\nDetail<\/th>\n<\/tr>\n<\/thead>\n
Manufacturer Part Number<\/strong><\/td>\n19435104<\/td>\n<\/tr>\n
Engine Type<\/strong><\/td>\nGM Gen IV LS-Series V8<\/td>\n<\/tr>\n
Displacement<\/strong><\/td>\n6.2L \/ 376 cu. in.<\/td>\n<\/tr>\n
Max Horsepower (HP)<\/strong><\/td>\n525 HP @ 6,200 RPM<\/td>\n<\/tr>\n
Max Torque (lb-ft)<\/strong><\/td>\n486 lb-ft @ 5,200 RPM<\/td>\n<\/tr>\n
Compression Ratio<\/strong><\/td>\n10.7:1<\/td>\n<\/tr>\n
Engine Block Material<\/strong><\/td>\nAluminum<\/td>\n<\/tr>\n
Crankshaft<\/strong><\/td>\nNodular Iron<\/td>\n<\/tr>\n
Connecting Rods<\/strong><\/td>\nPowdered Metal<\/td>\n<\/tr>\n
Pistons<\/strong><\/td>\nHypereutectic<\/td>\n<\/tr>\n
Cylinder Head Material<\/strong><\/td>\nAluminum (LS7-style Rectangular Port)<\/td>\n<\/tr>\n
Camshaft Type<\/strong><\/td>\nHydraulic Roller<\/td>\n<\/tr>\n
Camshaft Specs<\/strong><\/td>\n.525\u2033\/.525\u2033 Lift, 226\u00b0\/236\u00b0 Duration @ .050\u2033<\/td>\n<\/tr>\n
Fuel System<\/strong><\/td>\nElectronic Fuel Injection (Components Included)<\/td>\n<\/tr>\n
Throttle Body<\/strong><\/td>\n90mm (Included)<\/td>\n<\/tr>\n
Balance<\/strong><\/td>\nInternal<\/td>\n<\/tr>\n
Rear Main Seal<\/strong><\/td>\n1-Piece<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

What\u2019s Included (Complete Assembly)<\/strong><\/h3>\n
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<\/div>\n
<\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Included<\/th>\nNot Included \/ Required Separately<\/th>\n<\/tr>\n<\/thead>\n
\u2713 Fully Assembled Long Block<\/td>\n\u2717 Engine Control Module (ECU)<\/td>\n<\/tr>\n
\u2713 EFI Intake Manifold<\/td>\n\u2717 Wiring Harness<\/td>\n<\/tr>\n
\u2713 Fuel Injectors<\/td>\n\u2717 Flexplate \/ Flywheel (14\u2033 Flexplate\u00a0IS<\/em>\u00a0Included)<\/td>\n<\/tr>\n
\u2713 90mm Throttle Body<\/td>\n\ufffdClutch & Flywheel for Manual Trans<\/em><\/td>\n<\/tr>\n
\u2713 Ignition Coil Packs, Wires, & Spark Plugs<\/td>\n\u2717 Air Cleaner Assembly<\/td>\n<\/tr>\n
\u2713 Exhaust Manifolds<\/td>\n\u2717 Engine Mounts (Vehicle Specific)<\/td>\n<\/tr>\n
\u2713 Aluminum Water Pump<\/td>\n\u2717 Fuel Pump & Lines<\/td>\n<\/tr>\n
\u2713 Harmonic Balancer<\/td>\n<\/td>\n<\/tr>\n
\u2713 Valve Covers & Timing Cover<\/td>\n<\/td>\n<\/tr>\n
\u2713 Oil Pan<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Note:<\/strong><\/em>\u00a0The product specifications from Summit Racing initially state \u201cFlexplate Included: No,\u201d but the detailed description from Chevrolet Performance explicitly lists a \u201c14 in. flexplate\u201d as included. The Chevrolet Performance description is considered the authoritative source here.<\/em><\/p>\n

Comparison Table: Chevrolet LS3 vs. Alternatives<\/strong><\/h3>\n
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\n
<\/div>\n<\/p><\/div>\n
<\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n
Feature<\/th>\nChevrolet Performance LS3 (19435104)<\/th>\nBluePrint Engines LS3<\/th>\nATK Remanufactured LS<\/th>\n<\/tr>\n<\/thead>\n
Origin & Warranty<\/strong><\/td>\nNew, Factory GM w\/ GM Warranty<\/strong><\/td>\nNew, Aftermarket w\/ BPE Warranty<\/td>\nRemanufactured w\/ ATK Warranty<\/td>\n<\/tr>\n
Block & Components<\/strong><\/td>\nAll-New GM Production Parts<\/strong><\/td>\nNew Aftermarket Castings & Components<\/td>\nRemanufactured OEM Core<\/td>\n<\/tr>\n
Power Rating<\/strong><\/td>\n525 HP (GM Certified)<\/strong><\/td>\nSimilar (e.g., 525-550 HP)<\/td>\nVaries<\/td>\n<\/tr>\n
Included Components<\/strong><\/td>\nVery Complete (EFI, Ignition, Manifolds)<\/strong><\/td>\nVaries (Often Long Block)<\/td>\nTypically Long Block Only<\/td>\n<\/tr>\n
Ideal For<\/strong><\/td>\nPurists, OEM Reliability, Resale Value<\/strong><\/td>\nPerformance Enthusiasts, Value<\/td>\nBudget-Conscious Swaps<\/td>\n<\/tr>\n
Key Differentiator<\/strong><\/td>\nUnmatched OEM Quality & Support<\/strong><\/td>\nCustomizable Options<\/td>\nLower Initial Cost<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Frequently Asked Questions (FAQs)<\/strong><\/h3>\n

Q1: What is needed to make this engine run in my vehicle?<\/strong>
A:<\/strong>\u00a0You will need an\u00a0Engine Control Module (ECU)<\/strong>\u00a0and a corresponding\u00a0engine wiring harness<\/strong>\u00a0programmed for this specific LS3. You will also need a fuel system capable of delivering ~58 psi, engine mounts for your chassis, exhaust piping, and a transmission solution (the 14\u2033 flexplate is included for automatic applications).<\/p>\n

Q2: Is this the same engine that came in the Corvette and Camaro?<\/strong>
A:<\/strong>\u00a0Yes, this is the production LS3 engine used in the 2008+ C6 Corvette and 2010+ Camaro SS, delivering the same 525 horsepower rating. It is a genuine GM factory engine.<\/p>\n

Q3: Can I use a carburetor on this LS3?<\/strong>
A:<\/strong>\u00a0Yes, but it requires modification. You would need to remove the included EFI components and install a carburetor-style intake manifold, a distributor-less ignition controller, and a mechanical fuel pump or carburetor-rated electric pump. Using the included EFI system is recommended for optimal performance and driveability.<\/p>\n

Q4: What is the benefit of the rectangular port heads?<\/strong>
A:<\/strong>\u00a0The rectangular port design, derived from the higher-revving LS7, offers superior airflow compared to the cathedral port heads found on earlier LS1\/LS6 engines. This results in more power, especially in the higher RPM range, and provides excellent headroom for future modifications.<\/p>\n

Q5: Does this engine have VVT (Variable Valve Timing) or AFM (Active Fuel Management)?<\/strong>
A:<\/strong>\u00a0No.<\/strong>\u00a0This crate engine version of the LS3 does not include Variable Valve Timing or Active Fuel Management (cylinder deactivation). This is a significant benefit for swaps, as it eliminates the complexity and potential issues associated with these systems, making the wiring and tuning process much more straightforward.<\/p>\n

Pros and Cons<\/strong><\/h3>\n
\n
\n
\n
<\/div>\n<\/p><\/div>\n
<\/div>\n<\/p><\/div>\n\n\n\n\n\n\n\n\n\n
Pros<\/th>\nCons<\/th>\n<\/tr>\n<\/thead>\n
OEM Reliability & Quality:<\/strong>\u00a0Brand-new, factory-built engine with full GM backing.<\/td>\nHigher Initial Cost:<\/strong>\u00a0Premium price point compared to remanufactured or aftermarket new options.<\/td>\n<\/tr>\n
Complete Package:<\/strong>\u00a0Includes EFI intake, throttle body, coils, and exhaust manifolds.<\/td>\nRequires ECU & Harness:<\/strong>\u00a0Does not include the essential engine management components (must purchase separately).<\/td>\n<\/tr>\n
No VVT\/AFM Complexity:<\/strong>\u00a0Simplified wiring and tuning compared to newer factory engines.<\/td>\nPremium Fuel Required:<\/strong>\u00a010.7:1 compression ratio demands 91+ octane fuel for optimal performance and to prevent detonation.<\/td>\n<\/tr>\n
High-Flow Rectangular Port Heads:<\/strong>\u00a0Excellent standard airflow and potential for future power upgrades.<\/td>\nWeight & Size:<\/strong>\u00a0While lightweight for its power, it is larger and may require modification for some classic car engine bays.<\/td>\n<\/tr>\n
High Resale Value:<\/strong>\u00a0The \u201cChevrolet Performance\u201d name carries significant value in the market.<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Conclusion & Ideal Use Case<\/strong><\/h3>\n

The Chevrolet Performance LS3 crate engine is the gold standard for a modern V8 swap. It is the ideal choice for the builder who prioritizes OEM-level reliability, proven performance, and a seamless, high-quality foundation for their project.<\/p>\n

This engine is perfectly suited for:<\/strong><\/p>\n

    \n
  • \n

    Pro-Touring Restomods<\/strong>\u00a0(1967-1981 Camaros, Chevelles, Novas)<\/p>\n<\/li>\n

  • \n

    Classic Corvette and Hot Rod Modernizations<\/strong><\/p>\n<\/li>\n

  • \n

    Kit Cars<\/strong>\u00a0(Factory Five, Superformance, etc.)<\/p>\n<\/li>\n

  • \n

    High-Performance Street Machines<\/strong>\u00a0where drivability and power are equally important.<\/p>\n<\/li>\n

  • \n

    Any project demanding a turn-key, brand-new GM powertrain.<\/strong><\/p>\n<\/li>\n<\/ul>\n

    If your goal is to combine classic style with cutting-edge, worry-free horsepower, the Chevrolet Performance LS3 is the definitive and most respected choice.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Crate Engine, GM 6.2L, LS3, 525 HP, Internal Engine Balance, Aluminum Block and Heads, Each<\/p>\n","protected":false},"featured_media":2546,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[89],"product_tag":[102,103,104,105,106,107,108,109,110,111],"class_list":["post-2521","product","type-product","status-publish","has-post-thumbnail","product_cat-crate-engines","product_tag-102","product_tag-525-hp-ls","product_tag-chevrolet-performance","product_tag-corvette-engine","product_tag-fuel-injection-engine","product_tag-gm-crate-engine","product_tag-hot-rod-engine","product_tag-ls-swap-engine","product_tag-ls3-6-2l","product_tag-ls3-crate-engine","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","purchasable","product-type-simple"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/titanparthub.com\/index.php?rest_route=\/wp\/v2\/product\/2521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/titanparthub.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/titanparthub.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/titanparthub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2521"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/titanparthub.com\/index.php?rest_route=\/wp\/v2\/media\/2546"}],"wp:attachment":[{"href":"https:\/\/titanparthub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2521"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/titanparthub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=2521"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/titanparthub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=2521"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/titanparthub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=2521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}