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Gear ratio

3K views 9 replies 5 participants last post by  dennisr_f350 
#1 ·
How can I tell what gear ratio I have ? I look at the tag and the only number that looks like a gear ratio is 409 is that the number? There is also other numbers.

Thanks
 
#3 ·
With a stock tire, I'd block the front wheeels, jack up the back, put truck in neutral and rotate one rear tire one revolution and count how many times the drive shaft goes around. Ex... just over 4 but less than 4 1/2 -4.10's It'll get you some idea.
 
#5 ·
How about just gears? I have a set on the shelf fresh out of my truck. front & rear.
 
#10 ·
To find a factory Ford D60 or D70 rear, you're gonna need a time machine, or a second gen dodge 1 ton rearend that can be made to fit... I don't even know for sure what years/models Ford used the Dana rearend...

Bump.
 
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