Out of stock
SKU: JWP92462-46TH
MPN: 92462-46TH
The Ford 4.6/5.4L to TH400 Ultra Bel by J-W PERFORMANCE is a precision bell housing adapter engineered for serious engine swap and transmission conversion projects. This SFI-certified coupling solution enables builders to mate Ford modular V8 engines with the legendary Turbo 400 transmission, a combination sought after in high-performance street rods, custom hot rods, and vintage restorations where modern power meets classic driveline durability. Whether you're converting a classic chassis or upgrading a modern platform, this adapter bridges the gap between two incompatible bolt patterns with engineered precision.
The Ultra Bel adapter features SFI 6.1 certification, meaning it has passed rigorous safety and structural testing required for high-rpm applications and drag racing environments where catastrophic failure risk demands verified engineering. The casting and machining provide precise concentricity between the 4.6L or 5.4L engine's crankshaft and the TH400's input shaft, eliminating vibration and binding that can destroy both components. Weighing 21.3 pounds with compact dimensions of 20.5 x 9.25 x 20.7 inches, the adapter fits tight engine bays while maintaining the strength required for forced induction and high-torque builds pushing 500+ horsepower through the transmission's proven internals.
Professional engine builders and experienced DIY mechanics benefit most from this adapter when executing serious mechanical modifications that demand OEM-level reliability without compromise. Installation requires proper engine and transmission alignment using dial indicators and specialized tooling—this is not a bolt-and-go component. The Ford 4.6/5.4L to TH400 Ultra Bel is ideal for vintage muscle car restorations, street rod builds, and performance swaps where the TH400's hydraulic simplicity and bulletproof three-speed design offer superior reliability compared to electronically controlled modern automatics, particularly in non-computerized classic platforms where aftermarket engine management becomes unnecessary.
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