Engine Conversion Brackets

The UMI Performance Engine Conversion Brackets (SKU UMI90081) are precision-engineered motor mount adapter plates designed to enable GM LS-series engine installations into vehicles originally equipped with GM LT-series powerplants. This bolt-on conversion solution eliminates the need for custom fabrication, allowing enthusiasts and professional builders to swap modern LS-series engines while maintaining factory engine bay geometry and stock mounting points. Whether you're pursuing maximum horsepower gains or engine reliability upgrades, these brackets provide the structural foundation for a straightforward, repeatable conversion process.

Machined from high-grade aluminum and finished in natural anodize, the engine conversion brackets deliver lightweight strength without sacrificing durability. The anodized finish resists corrosion in engine compartment environments while maintaining a clean, finished appearance. Each bracket is engineered to transfer engine loads directly to the vehicle's factory motor mount locations, ensuring proper weight distribution and minimizing vibration transmission to the chassis. At 3.5 lbs for the complete kit, these adapters add minimal curb weight while providing the rigidity required for reliable long-term engine operation across varied driving conditions.

Engine builders, hot rod fabricators, and performance enthusiasts benefit most from this bolt-on solution when converting LS-series mills into LT-series engine bays. The brackets maintain OEM mounting geometry, reducing complications with driveline alignment and accessory fitment. Installation requires no frame modifications or custom welding—a significant advantage for vehicles where structural integrity and originality matter. Compatible with factory exhaust, cooling, and electrical systems, these brackets streamline the conversion timeline while preserving resale value for street machines and weekend track cars alike. Verify fitment with your specific vehicle year and model before ordering.