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I want to upgrade my 1994 mark viii transmission to the 1998 later 5.4 truck transmission. Can someone help me with what I need to make this happen? Please Help
Seion Kelley
 

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Actually I start most of what I do with a 5.4 truck transmission if it's for a 4R70W. The reason for this is that they have the hardened gearset parts. The problem with this for the average person is that they are going to need a valve body from a car transmission and using their older one isn't the solution.

Just make sure you don't get a 4x4 truck transmission unless you are planning to tear it down completely to replace the output shaft.

Darrin
 
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