Speed Gems Transmission Adapters


Ford 429/460 & 351M/400 series motors to Ford AOD

Adapter Kit Installation Instructions


                 Kit contents

        1. Starter alignment plate

        2. Bellhousing adapter plate     

        3. AOD converter spacer ring  

        4. Crankshaft pilot adapter

        5. 1 ľ x 7/16 coarse flathead screws x 5

        6. 1 inch 7/16 coarse flathead screw w/ modified head x 1

        7. 3/8 sae flange nuts x 4

        8. 7/16 sae torque converter bolts x 4

        9. Ford mini starter


This kit allows you to bolt an AOD/AODE or 4R70W transmission to 429/460 & 351M/400 series motors. In order to clear some of the bolt holes, we have rotated the transmission approximately 12 degrees clockwise. This is barely noticeable. We recommend using a deep pan and 4x4 filter to keep the sump in the trans fluid during hard right turns. If you donít want to use the deep pan, just overfill the trans slightly.


Because of the differences in the flywheels between years on the 429/460 motors, we developed the kit so you can continue to use your original flywheel. Prior to 1979 these motors were internally balanced. After that time they had a balance weight on the flywheel. Other types of small block Ford automatic transmissions can be made to work with this kit, but be aware that the spacing of the torque converter to the flywheel is different between the AOD/AODE/4R70W and other types of transmissions. Donít use the converter spacer ring when using other types of transmissions, and watch the spacing carefully.



Make sure that your alignment dowel pins are present in your engine. Place the starter alignment plate and the bellhousing adapter plate onto your engine over the original dowel pins. Fasten the plates with the enclosed flathead screws to the block making sure that the screw with the modified head is in the lowest driver side location. 


Attach the torque converter spacer ring onto your converter using the supplied flange nuts. Make sure the converter drain plug doesnít interfere with the installation ( if there is one ). There is a relief cut into the spacer ring to accommodate a drain plug if there is one. Press the crankshaft pilot adapter into your crankshaft, making sure that it bottoms out in the crank. With the flywheel installed, fit the torque converter ( not in the transmission at this time )to the crankshaft making sure that with everything in place it can be pushed up to the flywheel with no interference. Now you can install the converter into the transmission ( make sure that it is spun into the transmission all the way ) and bolt the transmission to the engine. When the transmission is bolted to the engine, the converter must have some free play ( approximately 1/8 to 3 1/6 of an inch ). If there is no free play, donít continue, find out why. The converter now bolts to the flywheel like a GM transmission with bolts instead of studs. 


The starter needs to be from a late model small block Ford engine. These starters are also used in the V6ís. They are very common in the bone-yards. They also make mini high torque starters for the small block Fords.          


Bendtsenís Transmission Center Inc.  763 767 4480

13603 Johnson St NE,  Ham Lake, MN. 55304