Complete MuscleRods LT Engine Swap Kit for 1964-1967 Chevy Chevelle A-Body
This kit addresses the challenge of installing a modern LT engine into a 1964 through 1967 Chevelle A Body chassis with custom brackets and mounts that secure the block at GM recommended angle and height. Its reinforced crossmember and frame supports line up with factory block bosses to preserve drivetrain geometry and spread load across the rails without altering the floor tunnel. Precision isolating mounts manage vibration and allow GM 4L60E and 4L80E transmissions to bolt in at the original tunnel height. MuscleRods builds these US steel components to deliver reliable power delivery and maintain chassis rigidity for confident road performance.
Precision Engine Alignment for LT Powerplants
Custom brackets position the LT engine block at the exact GM recommended angle and height to maintain factory driveline geometry. By mirroring stock engine placement, the design reduces stress on universal joints and keeps coupling wear even under heavy load. Correct positioning also safeguards accessory alignment for fuel pumps and alternators, preventing premature failures. This precision mounting approach eliminates the need for later drivetrain adjustments and tuning, saving time during assembly. Consistent alignment contributes to reliable power delivery and protects seals from uneven pressure. Builders benefit from immediate confidence in the setup and fewer service visits once on the road.
Reinforced Frame Brackets for Structural Stability
US steel plates form the backbone of the frame brackets and crossmember, offering superior resistance to bending under high torque. Strategic weld patterns at each joint create uniform strength across the mounting interface, preventing chassis flex that can lead to uneven tire wear. The crossmember contours precisely to clear factory exhaust headers, avoiding any trenching of the floor and preserving interior space. By spreading engine torque loads along a broad section of the frame rail, the brackets help maintain overall chassis rigidity. This added stiffness improves handling precision and prolongs the life of suspension components. Vehicles equipped with these mounts retain a balanced feel even when subjected to spirited driving.
Advanced Vibration Control in Engine and Transmission Mounts
Mounts incorporate reinforced gussets and fully welded joints to withstand sudden torque spikes without deformation. Integrated isolator material absorbs driveline shock, softening gear shifts and significantly reducing cabin vibration. Proper spacing between the block and gearbox maintains seal pressure to prevent common oil and fluid leaks in retrofit installations. The design also limits harsh noise, creating a smoother and quieter driving environment. By keeping engine and transmission movement in check, these mounts protect hoses, wiring, and accessory drives. Technicians notice fewer rattles and easier diagnostics with this refined mounting system.
Predrilled Fitment for Seamless Transmission Integration
Predrilled holes in the brackets match factory block bosses on the 1964–1967 A Body chassis, eliminating on-site measuring and custom shim work. Installers can bolt the engine into place at the correct angle on first attempt, speeding up the build process. The kit includes hardware to position GM 4L60E and 4L80E transmissions at the original tunnel height without cutting or modifying the floor. Clear installation points reduce the risk of alignment errors that can cause driveline vibrations or premature component wear. All required bolts, washers, and locknuts are supplied to ensure a complete assembly. Whether for a professional shop or a home garage, this approach cuts installation time and improves overall fitment confidence.
Trust MuscleRods for reliable installation and long term performance. For a more robust kit where you can build this same kit but this is a customizable kit where the user can select their own parts to better suit their needs, consider our Complete LT Swap Kits - LT Kit Builder.