Chevy LS Series Motor Mounts

Custom-Fit Motor Mounts for LS and Late Model GM Swaps

These LS and late-model GM motor mounts are designed with flexibility in mind—perfect for custom builds where fitment and clearance are critical. The mounting plates use all 5 bolt holes found on LS aluminum blocks, but if you’re running an iron block (4 bolts), the extra ear can be trimmed off for a perfect fit. The tube capture location is left loose so you can position it exactly where it works best for your chassis, headers, and drivetrain layout before welding.

Built from 1/4" plate steel, these mounts are made to handle the torque and abuse of modern LS powerplants while giving you the adjustability needed for a clean, functional install.

Key Features

• Part Number: R1390
• Fits LS and late-model GM engines
• Uses 5-bolt aluminum block pattern (trim for 4-bolt iron blocks)
• Movable tube capture location for custom fitment
• Made from 1/4" (.25") plate steel
• Ideal for engine swaps into a wide range of chassis

Kit Includes

• (2) LS series motor mount plates
• (2) Tube capture mounts