* PRE-ORDERS Now Open * PAFO1003: INTERNATIONAL/NAVISTAR 7.3L IDI (1988-90) to Ford 6.7L Diesel 6R140 / 10R140 Automatic Transmission Adapter Kit

INTERNATIONAL/NAVISTAR 7.3L IDI (1988-90) to Ford 6.7L Diesel 6R140 / 10R140 Automatic Transmission Adapter Kit

Pre-Orders Now Open – 10R140 Adapter Kits for 7.3 IDI Engines

We’re excited to officially open pre-orders for adapting the 7.3 IDI engines to the 10R140 transmission.

Please note: This offering is specifically for the 10R140. The 6R140 controller is still in development, and while US Shift plans to begin work on it after completing the 10R140 controller, there is no confirmed release timeline at this time.

What’s New:
We’ve made key updates to improve fitment and performance, including a redesigned adapter plate and a switch to the 6.4L Power Stroke starter. This starter offers a more compact design with no Bendix cover or extended nose, meaning minimal material removal is required for clearance. It also provides stronger cranking performance—especially beneficial in cold weather—and is widely available.

Transfer Case Compatibility:
Our transfer case adapter has been tested and confirmed to work with NP271 and NP273 transfer cases. Development is still ongoing for BorgWarner transfer cases. While it may be possible to retain a 6.7L transfer case, fitment has not yet been confirmed and may present challenges.

⚠️ Fitment Disclaimer
We want to be clear—these swaps are not guaranteed to be a direct bolt-in with zero modifications. 
We’ve done everything we can to make the process as straightforward and clean as possible, but some modifications will still be required. This may include minor adjustments for exhaust routing and starter will need a clearance modification on your setup.
As with any swap, expect some level of customization to get everything fitting and functioning properly.

Shipping Information:
Due to the size of these kits, orders will ship in multiple boxes. A flat rate of $45 applies within the lower 48 states. International customers are welcome—we will work with you directly to find the most cost-effective shipping solution. Estimated shipping weight for a full package is approximately 50 lbs.

Pre-Order Incentives (May 4 – May 17 Only):
All pre-orders placed during this window will include:
• 6.4L starter (a $140–$200 value)
• 10R140 transmission cooler line adapter (8AN fitting for easy line conversion)
• Additional $75 discount when adding our transmission cooler package

These incentives apply to all available kit options. Orders placed after May 17 will not include these extras.

Estimated Lead Time:
Estimated time to shipment is 12–14 weeks from the close of the pre-order period.
Please, do not call/email/text us every week. We will keep you all informed as much as we can, but we will be very busy. 

For additional questions, please Call, Text or Email us anytime at
608-640-2328 or Sales@Performanceadapters.com

Performance Adapters is not responsible for return shipping. Additional return information can be found in our policy pages. If you have any additional questions, please contact us call, text or email.