MuscleRods LT Engine Swap Kit for 1964-1967 Chevy Chevelle A-Body
Installing a modern LT powerplant in a 1964-1967 Chevelle A-Body demands exact engine placement to preserve driveline geometry and chassis integrity. This 1964-1967 A-Body LT Conversion Kit provides custom brackets and engine mounts that hold the block at factory recommended angle and height while allowing GM 4L60E or 4L80E transmissions to drop in without altering the floor tunnel. American made steel plates feature predrilled holes that line up with factory block bosses to remove guesswork in the swap. Reinforced frame rails and a precision crossmember control vibration transfer and maintain stable power delivery under torque.
Precision Engine Mounts for Modern LT Powerplants
The LT Conversion Kit includes engine mounts that cradle modern Gen V LT powerplants at the precise height and angle recommended by GM engineers. These mounts feature reinforced gussets and fully welded joints, providing the rigidity needed to withstand sudden torque spikes during launch and aggressive acceleration. By holding the block squarely within the factory motor bay, the design prevents unwanted movement of accessories such as water pumps and alternators, which can suffer from misalignment in a typical swap. The mounts also act as a first line of defense against noise and vibration, isolating harsh feedback before it reaches the passenger compartment. This combination of structural support and vibration control results in a smoother, quieter drive without compromising the robust feeling of the original chassis.
Reinforced Frame Brackets for Enhanced Chassis Strength
Every frame bracket and crossmember in this kit is crafted from thick American made steel plates that spread engine load across a wider section of the frame rails. Strategic weld patterns at each joint ensure consistent strength, preserving suspension geometry and steering precision even under high torque loads. The precision crossmember is designed with adequate clearance for factory exhaust headers, so there is no need to alter the original exhaust path or compromise flow. By reinforcing the area where the engine and frame meet, the kit prevents chassis flex and frame distortion that can lead to uneven tire wear and compromised handling. This added stiffness also contributes to longevity of other components by reducing stress points throughout the chassis.
Predrilled Bracket Alignment for Hassle Free Installation
To eliminate guesswork and reduce install time, all brackets in this conversion kit arrive with predrilled holes that align directly with factory block bosses on a 1964-1967 Chevelle chassis. This factory match drilling removes the need for on site measuring or custom shimming, allowing installers to bolt the engine in place with confidence. Predrilled mounting points guarantee that the block sits at the factory specified angle, maintaining optimal driveline geometry under acceleration and deceleration. Fewer fabrication steps mean a cleaner engine bay and less chance of misalignment errors that could cause vibration or premature wear. Technicians of all skill levels can complete the core mounting process quickly, freeing up time to focus on final tuning and accessory connections.
Seamless Transmission Mount Integration for 4L60E and 4L80E
This conversion kit includes a dedicated transmission mount that positions GM 4L60E and 4L80E gearboxes at the original tunnel height, ensuring direct bolt-in installation without cutting or modifying the floor. An integrated isolator cushions driveline torque, smoothing shift engagement and reducing harsh snap between gears for a more controlled heel-toe operation. Correct spacing between engine block and transmission case helps maintain consistent sealing surface pressure, preventing leaks and seal failures that often plague retrofits. The mount design allows for minor hardware adjustments when fitting alternative transmission models, and the kit comes complete with a full set of installation hardware to achieve precise alignment from the first bolt. This thoughtful approach to transmission support preserves driveline integrity and simplifies the swap process.
Count on MuscleRods for precise fitment and lasting 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 see our Complete LT Swap Kits - LT Kit Builder.