Differential Numbers D70
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Joined: Mar 2003
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From: Valley/Mountain Region
Differential Numbers D70
Hey ya’ll, Got some questions:
Was checking my rear diff and found markings 70 several times on the housing and the numbers C34835 also. There is a small tag that says 80-70
I also opened her up to cut new packing material (gasket) and change fluid; I took the op to note her numbers. On the spider gear I saw 135D and one the large gear ring I saw 035078
That makes me an Einstein in assuming that I have a Dana70, but what does the rest tell me? Ratios, etc. What additional markings would I see if it is a Dana 70 Heavy Duty, ¿HD? What can ya’ll tell me about my ride from these markings?
Thanks,
Big John,
’79 F350 inline6 2x4 crew cab
Was checking my rear diff and found markings 70 several times on the housing and the numbers C34835 also. There is a small tag that says 80-70
I also opened her up to cut new packing material (gasket) and change fluid; I took the op to note her numbers. On the spider gear I saw 135D and one the large gear ring I saw 035078
That makes me an Einstein in assuming that I have a Dana70, but what does the rest tell me? Ratios, etc. What additional markings would I see if it is a Dana 70 Heavy Duty, ¿HD? What can ya’ll tell me about my ride from these markings?
Thanks,
Big John,
’79 F350 inline6 2x4 crew cab
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