Weld In Biscuit Style Motor Mount

The TRANS-DAPT Weld In Biscuit Style Motor Mount (SKU TRA4506) is a billet steel engine mounting solution engineered for GM LS-series swaps into chassis with 24- to 30-inch frame widths. This weld-on biscuit-style mount provides a rigid, custom-fabricated connection point that eliminates the compliance and wear inherent in rubber isolators, delivering direct engine-to-frame load transfer. Built from quality steel stock and rated for the full torque output of LS powerplants, this mount is the foundation for any serious engine conversion requiring precision geometry and structural integrity.

Biscuit-style mounts use a concentrically machined interface that allows fine tuning of engine angle and height during installation—critical for proper belt routing, hood clearance, and chassis-to-pan fitment. The weld-on design demands permanent attachment to the frame or subframe, making it ideal for dedicated project builds where the powertrain orientation will not change. This approach eliminates fastener creep and lateral slippage that can develop in bolt-down systems over extended use. The 12.64 lb assembly is compact relative to traditional four-point isolator kits, simplifying packaging in confined engine bays.

This mount is purpose-built for dedicated LS conversions into street rods, vintage truck restorations, kit cars, and fabrication-friendly platforms where frame width falls within the 24–30 inch envelope. Buyers should verify frame width and LS variant (LS1, LS3, LSx displacement differences) before purchase. Professional welding and alignment setup is required; this is not a bolt-in component. TRANS-DAPT has long specialized in engine swap hardware, and biscuit mounts remain the standard for precision LS installations where vibration isolation is secondary to structural stiffness and tunable geometry.