Guess the Gear ratio
08-05-2011, 07:23 PM
#1
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Guess the Gear ratio
Found a Dana 70 out of a 91 cummins 2wheel drive 5 speed truck.
The truck is gone owner says no tag on cover.
That leaves me to counting the teeth. I need #s please.
I"d count the teeth on my truck but the rearend is still good I dont what to open it yet.
Or are there any other marking to look for?
Thank You
The truck is gone owner says no tag on cover.
That leaves me to counting the teeth. I need #s please.
I"d count the teeth on my truck but the rearend is still good I dont what to open it yet.
Or are there any other marking to look for?
Thank You
08-05-2011, 07:40 PM
#2
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http://www.spicerparts.com/identify.asp
This will tell what it is if your have the tag numbers.
For the no tag one, count the teeth and devide it out. 58/17=3.41
This will tell what it is if your have the tag numbers.
For the no tag one, count the teeth and devide it out. 58/17=3.41
46/13 3.54 Dana 70 Axle
08-07-2011, 12:40 AM
#7
Or set one drum on something to prevent it turning, turn the other over two full turns, mark and count the number of turns the pinion yoke turns is your ratio.
IE: Two turns of drum= just less than 4 pinion turns=3.90 just more=4.10 etc.
IE: Two turns of drum= just less than 4 pinion turns=3.90 just more=4.10 etc.
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