* Length: The Turbo 400 is considerably shorter than the 700R4. This will require changes to the driveshaft length. You'll likely need a custom driveshaft made.
* Mounting: While the bolt patterns might be similar, the transmission mounts will likely need to be modified or replaced to accommodate the Turbo 400's different dimensions.
* Torque Converter: The torque converters are completely different and not interchangeable. You'll need a new torque converter appropriate for the Turbo 400 and your engine.
* Shifter linkage/cable: The shifting mechanisms are different. You'll need a shifter and linkage or cable designed for the Turbo 400. This often involves fabrication or the purchase of an aftermarket kit.
* Cooling: The Turbo 400 doesn't have an internal cooling system like the 700R4 (which has a built-in oil cooler). You may need to add an external transmission cooler.
* Electrical: The 700R4 has electronic controls. The Turbo 400 is a purely mechanical transmission, so any wiring related to the 700R4 will need to be removed and may require modifications to the vehicle's electrical system.
* Kickdown: The 700R4 has a kick-down cable for throttle response; the Turbo 400 doesn't. You'll need to deal with this connection accordingly (likely remove it entirely).
In short, while technically possible, swapping a 700R4 for a Turbo 400 is a significant undertaking requiring mechanical expertise, fabrication skills, and specialized parts. It's not a straightforward swap and should only be attempted by someone experienced with automotive transmissions and modifications.
