68-72 GM A-Body LSX Motor Mounts Poly Bush

The 68-72 GM A-Body LSX Motor Mounts Poly Bush from UMI Performance delivers the structural foundation required for modern LSX engine swaps into classic General Motors A-Body platforms. Built for enthusiasts and professional builders who demand reliability during high-performance applications, these bolt-on motor mounts bridge the gap between vintage chassis geometry and contemporary engine technology, eliminating the guesswork from engine installation and ensuring repeatable results across multiple builds.

Constructed from steel with black powder-coat finish, these mounts feature engineered polymer bushings that absorb engine vibration while maintaining precision alignment—critical when mounting high-output LSX mills that generate substantially more torque than original A-Body power plants. The complete kit arrives with all necessary hardware included, eliminating multiple supplier trips and ensuring factory-correct bolt spacing and load distribution. Polymer inserts reduce NVH (noise, vibration, harshness) transmission to the chassis while protecting the mounting points from metal-to-metal wear that compromises long-term durability on modified vehicles.

Professional engine builders, restoration shops, and serious performance enthusiasts benefit most from these mounts when executing LS conversions on 1968–1972 A-Body cars including Chevelle, Cutlass, and GTO platforms. Installation is straightforward for builders with basic mechanical skills, and compatibility is engineered specifically for the A-Body frame without modifications to original mounting locations. The 11.48 lb kit ships compact at 6.75 x 6.55 x 12.15 inches, making it convenient to stock or ship as part of a larger engine swap package.