LS Engine Mounts and Frame Brackets for A-Body
Swapping a modern LS engine into a 1964 through 1967 A-Body chassis starts with securing the powerplant at the correct height and setback without resorting to welding. Designed to align with factory frame holes, these engine mounts and frame brackets only components deliver precise engine location through bolt in fitment for accurate driveline geometry. Crafted from precision cut American steel, the assembly reduces installation time and maintains steering and exhaust clearances for a straightforward integration. By preserving factory driveline angles under both idle and load, this mount system protects universal joints and transmission bearings from premature wear.
Precision American Steel Construction for Enduring Strength
Each engine bracket and mount is precision cut from high quality American steel plate selected for its consistent thickness and tensile properties. Computer controlled machining ensures every hole and flange matches the original frame rail geometry down to the thousandth of an inch. Critical weld zones are reinforced with precision fusion techniques that create a continuous bond along load paths, allowing the assembly to withstand repeated torque pulses from a modern LS engine without permanent distortion. At the same time, the steel plate thickness is calibrated to provide a controlled degree of flex, absorbing chassis resonance and reducing noise transmitted through the firewall. This approach delivers a durable support system that maintains its shape and function under the stresses of daily driving or spirited track use.
Maintaining Factory Driveline Geometry on A Body Platforms
Securing the LS powerplant at the precise height and setback dictated by the original chassis design is essential for smooth operation and driveline longevity. These mounts locate the engine so that the transmission input angle mirrors factory specifications, preserving proper driveshaft alignment under both idle and full throttle conditions. By keeping the universal joints in their correct orientation relative to the transmission yoke, the system reduces the risk of joint binding, vibration spikes and uneven wear. The result is a natural feel when accelerating or decelerating, with minimal noise transfer through the floorpan and consistent component life spans for U joints and transmission bearings.
Installation Without Welding for Rapid Engine Swaps
The bracket set leverages existing frame rail holes and readily available hardware to remove the need for welding or fixture setup. Installers with basic hand tools can align and secure the mounts in minutes, cutting out the complex measurements and fabrication steps typical of custom installations. This streamlined process reduces the likelihood of misalignment that can lead to drivetrain vibration or exhaust clearance issues. Once bolted in place, the package frees the builder to focus on plumbing, electrical and tune work, speeding up the overall swap timeline. Keeping the frame rails in original condition also preserves their structural integrity and makes future repairs or modifications straightforward.
Engineered Clearances to Preserve Steering and Exhaust Pathways
Designed specifically for 1964 through 1967 A Body chassis, these mounts follow the factory underbody contours to maintain vital clearances around key components. The bracket profile avoids interference with the steering box, control arms and factory fuel lines, while also providing room for aftermarket exhaust headers and cooling hoses. This careful geometry ensures a tidy engine bay and prevents contact that can lead to premature part failure or noise. In addition, the clear pathways simplify routing for wiring looms and vacuum lines, making service access and troubleshooting more efficient. Whether the build retains stock accessories or integrates performance upgrades, the mounts keep vital systems neatly organized and fully functional.
Count on MuscleRods for precise fit and reliable performance; to complement your setup with a Related EMB product see our 1968-1972 A-Body Engine Mounts and Frame Brackets (Only).