Transmission compatibility
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,738
Likes: 2,666
From: SE Florida
The newer trans can be modified to work. You DO need to match the engine. As pointed out above, the diesel has a unique bellhousing. The 5.4L trans has weaker internals and the V10 will tear it up.
The solenoid body is different and needs to be changed. Also, there is an orifice in the pump body that needs to be changed. The later trans has a 0.250" hole, and the earlier trans has a 0.030 orifice. You need to change from the hole to the orifice or the torque converter clutch lockup will SLAM on.
The solenoid body is different and needs to be changed. Also, there is an orifice in the pump body that needs to be changed. The later trans has a 0.250" hole, and the earlier trans has a 0.030 orifice. You need to change from the hole to the orifice or the torque converter clutch lockup will SLAM on.
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Joined: Oct 2021
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The newer trans can be modified to work. You DO need to match the engine. As pointed out above, the diesel has a unique bellhousing. The 5.4L trans has weaker internals and the V10 will tear it up.
The solenoid body is different and needs to be changed. Also, there is an orifice in the pump body that needs to be changed. The later trans has a 0.250" hole, and the earlier trans has a 0.030 orifice. You need to change from the hole to the orifice or the torque converter clutch lockup will SLAM on.
The solenoid body is different and needs to be changed. Also, there is an orifice in the pump body that needs to be changed. The later trans has a 0.250" hole, and the earlier trans has a 0.030 orifice. You need to change from the hole to the orifice or the torque converter clutch lockup will SLAM on.
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