LS Engine Mounts and Frame Brackets for 1973-1987 4WD GM Trucks and 1973-1991 4WD SUVs
Dropping an LS motor into a GM 4WD truck from 1973 to 1987 or a 4WD SUV from 1973 to 1991 often runs into rail misalignment that demands hours of test fitting. These engine mounts and frame brackets bolt directly to the original frame holes by using precision laser cutting and controlled bending to replicate factory contours. Manufactured from heavy gauge steel plated with a corrosion resistant coating they secure the powertrain at the correct angle under load and remove the need for drilling or shims. By preserving the factory geometry this setup reduces drivetrain stress and vibration while slashing installation time for anyone tackling an LS swap in these classic four wheel drive rigs.
Precision Laser Cutting and Controlled Bending for Exact Engine Placement
These brackets use precision laser cutting followed by controlled bending to exactly replicate the frame rail hole patterns on 1973-1987 GM 4WD trucks and 1973-1991 4WD SUVs. By matching the factory contours, the LS engine drops in at the recommended angle on first fit, eliminating hours of trial assembly and measurement. Each component is manufactured in the USA under strict quality standards, ensuring consistency from batch to batch. Accurate placement preserves torque distribution through the driveline under load, cutting down on stress at transmission mounting points and reducing unwanted vibration. This precise approach also streamlines alignment of the driveshaft and transfer case, making the entire powertrain assembly more reliable on road and trail.
Robust Steel Fabrication with Protective Powder Coat Finish
Constructed from heavy gauge steel plate chosen for its high yield strength and resistance to deformation, each mount and bracket withstands the weight and torque of an LS motor under rugged conditions. After welding, every surface receives a dense powder coat barrier that seals weld seams and internal edges against moisture, salt, and debris. This coating not only deters rust but also maintains dimensional accuracy by preventing corrosion-related warping over time. Routine rinsing with water is all that's needed to keep the finish intact, preserving the mounting geometry for long term use. The combination of premium steel and a durable finish delivers a stable foundation for the engine, even in wet or muddy environments.
Direct Bolt On Design to Slash Swap Time
These mounts and brackets arrive ready to bolt directly to the stock frame holes, removing the need to drill new openings or add spacers. By using original mounting points, installers can maintain a single, predictable workflow from frame prep to final torque. Included hardware covers all necessary bolts, nuts, and washers, saving trips to the parts store and ensuring that each fastener meets or exceeds factory specifications. This direct bolt on approach turns what was once a multiday trial fitting into a streamlined operation that can be completed in hours. The result is a repeatable installation process that reduces downtime on each vehicle and minimizes the chance of fitment errors.
Maintaining Factory Geometry for Reduced Drivetrain Stress
Preserving the factory engine angle and mounting location is critical for keeping the driveline within original alignment tolerances. Proper geometry reduces bending forces on the transmission tail housing and ensures the driveshaft yoke remains centered in the transfer case output. By avoiding misalignment, this setup cuts down on vibration that can accelerate bearing wear, seal failure, and joint fatigue. Over the life of the vehicle, adherence to OEM design parameters protects connected components such as the transfer gears and axles, resulting in smoother operation and lower maintenance costs. In rugged off road applications, this reliability translates directly into enhanced confidence and performance.
Built with precision and robust steel construction, this bracket kit ensures a secure fit and lasting reliability for your LS swap.