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Can't find my gear ratio

1K views 7 replies 4 participants last post by  SMKSTAX 
#1 ·
I'm trying to find my gear ratio so I can get the right tunes for my truck but there is no digit before the 73, and I'm not sure what 420 means. Any ideas?


 
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#3 ·
under axle in the door jam it says 41
 
#6 ·
Thanks for your help :icon_ford:
 
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