LS3 Crate Engine and 4L70E Trans Kit
Product Discontinued
CHEVROLET PERFORMANCEPART NUMBER: 809-19370413PAK

LS3 Crate Engine and 4L70E Trans Kit

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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Crate Engine Kits
Engine And Trans Kit
Includes:
  • LS3 525 HP Crate Engine
  • 550 HP Rated 4L70E Transmission
  • 2400 Stall Torque Converter
  • Dipstick
  • Standard Controller & Wiring Harness
  • Installation Hardware Set

    Kit Contains:

    • Chevrolet Performance LS376/525 6.2L LS3 Engine - 809-19370413
    • Performance Automatic 4L70E Transmission Package - 732-PASS75103
      • Transmission Kit Includes:
      • 550 HP Rated 4L70E Transmission
      • 2400 Stall Torque Converter
      • Dipstick
      • Standard Controller & Wiring Harness
      • Installation Hardware Set
    • Fuel-Injected Ferocity for Performance Cars of All Ages

      The Chevrolet Performance LS376/525 6.2L LS3 Engine is what do you get when you take Chevrolet's aggressive ASA camshaft, developed for the high-RPM world of circle track, and slip it into an LS3 crate engine. This 525 horsepower monster is one of their most powerful production-based crate engines, the new LS376/525! The ASA cam is a hydraulic roller that helps the engine deliver excellent throttle response and breathe exceptionally well at high RPM. For durability, they complement the cam with higher-rate valve springs to add stability to the valvetrain. This simple yet effective combination has an edge to it.

      Show More You'll notice it in the idle quality and you'll feel it when the revs quickly climb. With 20 more horsepower than the larger-displacement LS7, it's definitely not for the timid!

      Connect and Cruise Kits

      Chevrolet Performance continues to lead the industry with its unprecedented Connect & Cruise crate powertrain systems - factory-engineered engine and transmission combinations. Chevy Performance engineers matched the engines and transmissions for optimal performance and durability, so you can wring out every horsepower from them with total confidence. The specially calibrated controllers are designed for retrofit installations in older vehicles, for easier and quicker installation and operation without the need for third-party tuning. Each kit delivers a brand-new, fully assembled crate engine, an electronically controlled overdrive transmission, electronic control modules for both, and the engine control hardware to get it all running in your project vehicle. The convenience of a crate engine, the assurance of factory validated performance, and the value of an inclusive package - that's what you get with Chevrolet Performance's Connect & Cruise crate powertrain systems. Detailed instructions outline all the necessary steps. The engineers did all the hard work of designing and calibrating perfectly matched powertrain systems - and they covered them with a 24-month/50,000-mile limited warranty.

      GM Warranty

      Unleash serious street and track power with the Chevrolet Performance LS3 LS376/525 6.2L 525HP Crate Engine—a bold upgrade for any high-performance build. Based on the proven LS3 platform, this crate engine ups the ante with a more aggressive camshaft and enhanced airflow, delivering an impressive 525 horsepower and 486 lb-ft of torque.

      The LS3 motor is known for its balance of reliability, modern technology, and performance, and this LS376/525 variant takes it a step further. It's engineered for enthusiasts who want more than stock but still value GM-level durability and ease of integration. Featuring high-flow rectangular port aluminum cylinder heads and a high-lift hydraulic roller camshaft, this engine offers thrilling top-end power without sacrificing street manners.

      Perfect for Pro-Touring builds, hot rods, or late-model swaps, the LS376/525 delivers plug-and-play performance when paired with GM's Connect & Cruise system. Whether you're building a track weapon or weekend cruiser, this engine gives you the punch you're looking for with minimal guesswork.

      Considering the LS376/525 price compared to custom-built alternatives, this engine offers outstanding value with factory-tested performance and peace of mind. If you're searching for a factory-backed crate engine that combines raw power with modern efficiency, the LS3 525 is your solution.

      Upgrade your project with one of Chevrolet Performance's most exciting crate options—engineered to deliver uncompromising horsepower and rock-solid reliability right out of the box.

    Part TypeEngine
    Product LineChevrolet Performance LS3 LS376/525 6.2L 525HP Crate Engine
    BrandCHEVROLET PERFORMANCE
    Part CategoryPerformance Parts
    Package Qty1
    Package TypeEA
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