Ford 3.5 L Ecoboost to Turbo 400/350 Adapter Plate
Description
Description
An adapter kit that mates the Ford V6 3.5L EcoBoost engine to a Turbo 350 or Turbo 400 transmission. Made from 6061-T6 aluminum plate, waterjet cut to size and then final machined.
Putting a GM three-speed automatic behind a Ford engine means the bellhousing pattern, starter and flex plate all have to line up. This kit retains the stock flex plate and works with the stock Ford starter from the 3.5L engine kit.
Kit Details
- Engine: Ford V6 3.5L EcoBoost
- Transmission: Turbo 350 or Turbo 400
- Material: 6061-T6 aluminum plate, waterjet cut then final machined
- Starter: works with the stock Ford starter from the 3.5L engine kit
- Flex plate: retains the stock flex plate
Requires a custom torque converter.
Why An Adapter Plate
An adapter plate sits between the engine block and the transmission bellhousing and translates one bolt pattern to the other, while holding the transmission centered on the crankshaft. Machining the plate after waterjet cutting is what gets the bores and faces where they need to be.
Ordering
This is a built-to-order part, not a stocked item. Contact FMI for the current lead time.
Questions
Which transmissions does it fit?
Turbo 350 or Turbo 400.
Do I need a different torque converter?
Yes. This kit requires a custom torque converter.
Can I keep my flex plate and starter?
Yes. It retains the stock flex plate and works with the stock Ford starter from the 3.5L engine kit.
Is it in stock?
It is built to order. Contact FMI for the current lead time.
Couldn't load pickup availability
Delivery and Shipping
Delivery and Shipping
- All in-stock products typically ship within 48 hours.
- For items that are not currently in stock, please expect 4–6 weeks for production and delivery.
- For stock status on products, contact our customer service team, and a representative will assist you with the most up-to-date availability and information: (480) 718-9800 | info@foutzmotorsports.com
PROP 65 WARNING
PROP 65 WARNING
This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov


