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Discussion Starter · #1 ·
If any of your automatic lovers swap a transmission and you currently have a 4r70w or a 4r75w and replace it with the other one it will be messed up. It will bolt up and is a very easy swap but the only way to correct it is with an SCT XCal 3 and Custome tune by someone like VMP and HP Performance, ford cannot recalibrate the speedo for you and you will be showing 150mph all the time once u hit about 30... this makes your odometer go nuts, ie ive put 2,500 miles on this week.. lol? I drive to school and back lol.

Just a warning for those so if someone see's another post/thread or has someone doing this they can warn them.
 
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