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LS3 System Components

Engineered for Total Performance!

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 all-new “Connect & Cruise” Crate Powertrain systems. They’re available in an LS3/4L65-E combination or the supercharged LSA/4L85-E system.

Each kit delivers a brand-new, fully assembled crate engine, a brand-new electronically controlled overdrive transmission, electronic control modules for both, and the engine control hardware to get it all running in your project vehicle – including the mass airflow sensor, oxygen sensors and even the special throttle pedal for the engines’ electronic throttle bodies.

Chevrolet Performance engineers matched the engines with their respective transmission, ensuring it was up to the task of channelling big power with absolute dependability. The engine controller is specially calibrated to run the engine without some of the production-vehicle features that aren’t required in an older vehicle. That means no need for third-party tuning. Better still, the systems’ unique SuperMatictransmission controller is designed to work with the engine controller for a seamless, “plug and play” installation that is quick, easy and intuitive. Detailed instructions outline all the necessary steps.

Our engineers did all the hard work of designing and calibrating perfectly matched powertrain systems – and we’ve covered them with a 24-month/50,000-mile limited warranty. See gmperformanceparts.com or your Chevrolet Performance retailer for complete details.

All you have to do is install them, connect, and start cruising!


Powering the Cadillac CTS-V Series, the LSA is a supercharged powerhouse that’s good for 556 horsepower. It uses a high-helix, high-efficiency Twin Vortices supercharger to expand the effective boost range from low to high rpm. The 4L85-E four-speed overdrive transmission channels the LSA’s torque to the axle with exceptional strength and precision. It’s a supercharged combo for all hot rods!



The LS3 is the power behind the Chevy Corvette and Camaro SS. It’s rated at 430 hp in this new Crate Powertrain kit, offering the lightweight advantage of an aluminum cylinder block, aluminum heads and a composite intake manifold over cast iron engines in early cars. It’s backed by the 4L65-E four-speed overdrive automatic, which enables great highway cruising performance and fuel economy with the durability of hardened internal parts and five-pinion gearsets.



About our engine controllers and SuperMaticTM transmission controllers

The engine and SuperMatic transmission controllers in the “Connect & Cruise” Crate Powertrain kits are designed for true stand-alone performance in older vehicles. All that’s needed to get a vehicle running with the engine controller is power and ground sources, a high-pressure fuel pump and an electric cooling fan. For the LS3, we recommend a 58-psi (400 kPa) fuel pump and for the LSA, a 65-psi (450 kPa) pump.

Chevrolet Performance’s specially calibrated engine controller will give the same performance as the production engine but does not utilize a number of features associated with production-model systems like ECM controlled start, AC control or cruise control. It also includes a SES (service engine soon) LED indicator embedded in the fuse box as well as an electical lead for an optional dash mounted SES indicator. This system uses enhanced OBD 1 style diagnostic codes.

The SuperMatic transmission controller is the most fully integrated and user-friendly transmission control system on the market. Only a few connections are required to get the transmission ready for operation in you vehicle – and it is designed for tuning-free compatibility for the Crate Powertrain systems’ engine control module.

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