Complete MuscleRods LS Engine Swap Kit for Tri-Five Chevy
When fitting an LS V8 into a 1955 through 1957 Chevy this 1955-1957 Chevy LS Conversion Kit solves the key challenge of drivetrain alignment by positioning engine and transmission at the correct angle within stock frame rails. Built around precision frame mounts and a stamped steel crossmember it bolts directly to factory frame rails and accommodates T56, 4L60E and 4L80E transmissions without any modification to the tunnel floor. The design clears deeper pans including the GM LH8 oil pan to preserve hood clearance on your Tri Five Chevy and reduce unwanted vibrations. Every bracket and piece of hardware is made in the USA to ensure consistent strength and a straightforward installation.
Precision Alignment of LS Engine and Transmission
The conversion kit positions the LS V8 and any of the specified transmissions at the exact angle needed for a smooth driveline. By matching the output shaft of a T56, 4L60E or 4L80E transmission to the rear axle pinion, it reduces stresses on universal joints and center bearings. This careful geometry cuts down on unwanted vibrations under acceleration and braking, preserving a quiet ride quality in a classic Chevy chassis.
Streamlined Install with Complete Mounting Hardware
Every element required for installation is included, from motor mounts and frame brackets to a stamped steel crossmember and transmission crossmember plates. This straight forward hardware pack guides builders through bolt-in assembly without any alteration to the tunnel floor. Even those new to engine swaps can rely on the supplied bolt pack and spacers to achieve consistent positioning and secure attachment in minutes rather than hours.
Oil Pan Clearance for Tri-Five Hood Preservation
To keep the original hood line intact, the crossmember and frame brackets are crafted to clear deeper oil pans such as the GM LH8 design when paired with a low profile intake manifold. This approach lets builders run a larger sump for improved fluid capacity without requiring sheet metal trimming. The result is maintenance of classic body proportions while supporting extended driving or occasional track use.
USA Made Steel Construction with Vibration Isolation
All brackets, mounts and the crossmember are manufactured in the United States from heavy gauge steel, laser cut and stamped to precise tolerances. A durable polyurethane mount pack at the transmission crossmember absorbs engine movement and resists heat or oil degradation. This robust build quality stands up to the higher torque of modern LS engines and ensures chassis integrity over many miles of driving.
Count on MuscleRods for a precise fit and lasting performance. To access a more robust kit with full customization see our Complete LS Swap Kits - LS Kit Builder.