Out of stock
SKU: BMRTC731H
UPC: 887753334534
MPN: TC731H
The 79-93 Mustang Transmission Crossmember T400/T56 is a bolt-on structural component engineered for Foxbody Mustang owners planning serious transmission upgrades. When swapping a TH400 automatic or T56 manual into a third-generation Mustang, factory crossmembers are inadequate—they were designed for the original drivetrain and lack the rigidity to support upgraded transmissions under load. This crossmember kit solves that problem, providing the reinforced mounting platform your swap demands while maintaining proper drivetrain geometry and driveshaft alignment.
Constructed from steel and finished in black powder coat, this crossmember delivers durability and corrosion resistance in an undercarriage environment. The design accommodates both the TH400 transmission—Chevrolet's legendary three-speed automatic known for strength in street and strip applications—and the T56 six-speed manual, Ford's modern gearbox valued for highway cruising and gear-stacking versatility. The bolt-on installation means no welding or cutting required; it fastens directly to existing frame points, making this a practical modification for garage builds and professional shops alike. Weighing 8.9 lbs and measuring 10 x 4.5 x 26 inches, it occupies minimal additional space while distributing transmission weight and torque loads evenly across the frame rails.
This kit is essential for 1979-1993 Mustang owners executing LS swaps with LS-to-T56 conversions, vintage drag racers upgrading from the original C4 automatic to a TH400, or street enthusiasts prioritizing reliability over factory limitations. Installation is straightforward—no modifications to the transmission, engine bay, or tunnel are necessary when following the kit design. Whether you're building a restomod with modern reliability or a dedicated track car, this crossmember ensures your transmission sits properly, your driveshaft angles are correct, and vibration is minimized. Proper support prevents premature transmission failure, reduces frame flex, and protects your investment in expensive transmission hardware.
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