Each kit delivers a fully assembled crate engine, transmission, electronic control module, 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 transmissions, ensuring they are up to the task of channeling 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 "trouble" codes and no need for third-party tuning, "plug-and-play" installation that is quick, easy and intuitive. 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.

LS376/525 376ci / 6.2L, 525HP / 489TQ Engine
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 6.2L 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 with .525-inch lift on both sides, along with 226-degrees duration on the intake side and 236-degrees on the exhaust side. Coupled with a tight, 110-degree lobe separation angle, it 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.

This simple yet effective combination has an edge to it. 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!

Specifications:

• Horsepower: 525 @ 6300 RPM
• Torque: 489 ft/lbs @ 4400 RPM
• Block: Cast Aluminum
• Crankshaft: Nodular Iron
• Connecting Rods: Powdered Metal
• Pistons: Hypereutectic Aluminum
• Camshaft: Hydraulic Roller
• Cylinder Heads: As-Cast L92-style port, 68cc Chamber
• Reluctor Wheel: 58X
• Balanced: Internal
• Compression Ratio: 10.7:1
• Rocker Arms: 1.7:1
• Recommended Fuel: 92 Octane

Engine Control Modules and Harnesses
A precisely calibrated engine control module is essential to making your fuel-injected LS engine perform in your older vehicle - and Chevrolet Performance is your source for controllers that are designed for easy, "plug-and-play" installation and, in most applications, no need for third-party tuning adjustments.
Unlike production controllers that may or may not come with a used engine, these controllers are calibrated for installation in older vehicles. That means many of the features required for late-model production vehicles are "turned off", because they're not required in older cars and trucks. That means features that may trigger a diagnostic trouble code and possibly affect performance - requiring additional tuning - are not enabled.
These inclusive kits deliver all the components required to plug into the engine and get it running - from the controller itself and the accompanying wire harness to the mass airflow sensor, oxygen sensors and even a throttle pedal assembly for engines equipped with an electronic throttle body. The kits also include detailed instructions to help you do it right the first time, even if you have no experience.

Most Engine Control Modules Kits Include:

• Oxygen sensors & mounting bosses (for installation in the exhaust system)
• Mass airflow meter & mounting boss (for installation in the air intake system)
• Throttle pedal assembly (for use with the electronically operated throttle)
• Specific oil pressure sensor that is compatible with the harness (when needed)
• Complete wiring harness with fuse box and necessary cam sensor and MAP sensor jumpers
• Programmed controller
• Instruction sheet

Each Chevrolet Performance controller kit is a true stand-alone system. All that's needed to get a vehicle running with it are power and ground sources, a high-pressure fuel pump and an electric cooling fan.

T56 Super Magnum Six-Speed Manual Transmission
The Chevrolet Performance T56 Super Magnum Six-Speed Manual Transmission is a high-torque capacity TREMEC six-speed manual. Specially designed for custom, retro-fit installations with Chevrolet Performance crate engines. The exterior case similar to fourth-generation F-body transmission with the stronger, high-capacity gear sets, input shaft and output shaft used in the TREMEC TR6060. It also features a 40-tooth reluctor ring that's necessary for use with electronic vehicle speed sensors used with Chevrolet Performance controllers.

Features:

• 700 lb.-ft. Maximum Torque Capacity
• 26-Spline Input Shaft
• 31-Spline Output Shaft
• Gear Ratios: 2.66 (1), 1.78 (2), 1.30 (3), 1.00 (4), 0.80 (5), 0.63 (6)
• Slip-Yoke Design
• Two-Position Shifter Plate Included, With Third Position Built Into The Transmission

LS7 / T56 Super Magnum Installation Kit
Get your new T56 Magnum bolted to your new engine with this T56 Super Magnum installation kit. Kit includes all the correct components that Chevrolet Performance offers to easily mate your new engine and trans.

Installation Kit Includes:

• Super Magnum Bell Housing Kit
• Hydraulic Throw-out Bearing
• Clutch Actuator to Trans Bolts
• Bell Housing to Trans Bolts
• Flywheel to Crankshaft Bolts
• Clutch Disc & Pressure Plate Set, 14" Diameter, 168-Tooth SFI-approved Aluminum Flywheel
• Crankshaft Pilot Bearing
• Instruction Sheet
• Rated for 800 ft/lbs of torque
• Does not include clutch master cylinder

Each Crate Powertrain System Includes:

• Fully assembled crate engine
• Transmission & Install Kit
• Calibrated engine control module
• Oxygen sensors and mounting bosses (for installation in the exhaust system)
• Mass airflow meter and mounting boss (for installation in the air intake system)
• Throttle pedal assembly (for use with the electronically operated throttle)
• Assembled wiring harness with fuse box and necessary cam sensor and MAP sensor jumpers
• Oil pressure sensor that is compatible with the harness
• Instruction sheet

GM Warranty

The Chevy Performance LS376/525 LS3 6.2L 525HP Connect & Cruise Manual Transmission Powertrain System is a factory-engineered solution for builders who want modern LS power paired with a matched manual transmission in one complete package. Designed for seamless integration, this Connect & Cruise system eliminates the guesswork of pairing engine, transmission, and control components—delivering 525 horsepower from a 6.2L LS3-based platform with OEM-level calibration and reliability. For enthusiasts building a pro-touring muscle car or high-performance restomod, this powertrain system provides a turnkey foundation backed by Chevrolet Performance engineering.

By combining a high-output LS3 6.2L V8 with a compatible manual transmission, this system ensures optimized drivetrain compatibility, consistent power delivery, and simplified installation. Instead of sourcing individual components, builders benefit from a matched engine and transmission assembly designed to work together from day one.

Performance Benefits & Key Features

At the heart of the Chevy Performance LS376/525 Connect & Cruise system is a 525HP LS3-based engine engineered for aggressive street performance and track capability. Enhanced airflow components, performance camshaft calibration, and electronic fuel injection contribute to strong throttle response and broad torque capacity across the RPM range.

Performance enthusiasts value key specifications such as aluminum block construction for reduced weight, high-flow cylinder heads, and a factory-calibrated engine control system. The included manual transmission is engineered to handle the engine’s torque output while delivering precise gear engagement and driver-focused control. This combination offers the ideal balance of power and drivability for spirited street use, autocross, and weekend drag racing.

The Connect & Cruise package also simplifies wiring and control integration, helping ensure proper communication between engine and transmission. For builders seeking modern reliability with classic styling, this powertrain system offers confidence and consistency without complex custom tuning.

Fitment, Compatibility & Applications

The LS376/525 Connect & Cruise Manual Transmission Powertrain System is designed for vehicles configured for LS engine swap applications. Popular platforms include classic GM muscle cars such as Camaro, Chevelle, Nova, and El Camino, along with C10 trucks and custom street rods. Its compact LS architecture supports versatile fitment across a wide range of restoration builds and pro-touring projects.

Enthusiasts upgrading from older carbureted small blocks will appreciate the modern fuel injection compatibility and refined drivability. The matched manual transmission makes this system ideal for drivers who want a hands-on, performance-oriented driving experience.

If you’re ready to power your project with factory-matched LS performance, explore the Chevy Performance LS376/525 Connect & Cruise Manual Transmission Powertrain System at JEGS and elevate your build with a proven, high-horsepower drivetrain solution.