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Changing the 4th gear OD in Auto trans?

792 views 1 reply 2 participants last post by  HFD1 Tuner 
#1 ·
Has anyone ever changed the 4th gear over drive in the automatic tranny?

I was thinking about the MPG issues. Is it a valid option ?

Just a thought
 
#2 ·
been out of the transmission build game for a while but are you asking to change the gear ratio in 4th? You would need new hard parts that played nice with the oem ones. But if you are asking to fix a broken 4th gear problem that could be a easy fix or a internal broke part deal need more info...
 
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