MuscleRods LT Engine Swap Kit for 1955-1957 Chevy Tri-Five
If you are swapping a modern LT engine into a Tri-Five Chevy this LT Conversion Kit solves the key challenges of fitment and drivetrain alignment with a complete set of mounts, frame brackets, and crossmembers. Precision engineered engine and transmission mounts hold everything in place under high torque while preserving chassis integrity. Support for the 4L60E and 4L80E transmissions means no changes to the tunnel plus room for a T56 or TR6060 if you choose. Made in the USA by MuscleRods this kit combines quality workmanship with clear instructions that guide professional builders and dedicated DIYers through each step.
Precision Engine and Frame Alignment for 1955 to 1957 Chevy
The conversion kit is engineered to match the original frame dimensions of your 1955 to 1957 Chevy, ensuring that the modern LT engine sits exactly where the factory powerplant once did. By providing mounts and brackets with exact geometry, it eliminates vibration and stress on the chassis that can occur with an ill fitting setup. This alignment preserves the classic stance and handling while maintaining the vehicle's structural integrity. The result is a direct bolt in installation that leaves the undercarriage looking as clean as it performs.
Reinforced Support with Advanced Crossmember Construction
At the heart of this kit lies a reinforced crossmember and robust mounting brackets designed to take on the increased torque of Gen V LT engines. The thicker gauge material and optimized weld pattern deliver increased chassis rigidity, reducing flex under heavy acceleration or spirited driving. With this support in place, the risk of frame twisting is greatly reduced, which in turn protects the transmission tunnel and other critical underbody components. Drivers will notice crisper throttle response and improved cornering confidence thanks to this solid backbone.
Exact Fit Components That Streamline the Installation Process
Each mount and bracket in the kit is manufactured to exacting tolerances, which means there is no guesswork or trial fitting during installation. The package includes all hardware needed to secure engine mounts, frame brackets and the transmission support, so builders have everything at hand to complete the swap. Clear step by step instructions guide both professional shops and dedicated weekend mechanics, cutting installation time and reducing the chance of error. When proper alignment is essential, these ready to install components make the swap feel effortless.
Comprehensive Compatibility with LT Engines and Transmissions
This conversion kit supports a wide range of Gen V LT powerplants such as the LT1, LT4, L83 and L86, with the factory oil pan and an intake setup that fits under the Tri Five Chevy hood. It also accommodates popular transmission choices like the 4L60E and 4L80E without the need to modify the tunnel. For those opting for a manual gearbox such as a T56 or TR6060, the kit's precise bracket positions simplify any additional adjustments. Whether you are chasing modern horsepower figures or reliable daily driving, the kit delivers a flexible foundation for your build.
Count on MuscleRods for fitment you can trust. For a more robust user configurable solution not an add on see our Complete LT Swap Kits - LT Kit Builder.