1972 C10 4X4 Rear Axle Ratio

jboatno4

 
Supporting Member 1
#1
I have a 72 heavy half ton with posi rear end & need to find the gear ratio without opening . The RPO is G8O. I've searched the web and get numerous hits but none of them let me know the ratio.

Where else can I look for this info?

Thanks

The listing says C10 and it should be K10. My bad.
 

64ss409

Well Known Member
Supporting Member 9
#3
Since it is a posi, you could jack up both wheels, turn wheels one turn and count the turns of the drive shaft. I like to start with the valve stem down, mark the drive shaft, and turn the wheel one turn until the valve stem is back at the bottom.
 

bobs409

 
Administrator
#4
I'd do what Ron said. And may I also add I'm jealous! I always get the darn peg leg rears! :bang

Looking for some posi's for my trucks if you know of any. One is a 12 bolt in my 69 stepside, would love to find a 3.55 for it and the other is an Eaton H072 or H052 in my 71 C20. Need a 4.10 for that one. :deal There, I got a free wanted ad in. :D
 
#6
I dont know if you are still looking for the eaton. no posi's that I have ever seen. Only detroit nospins I have 4 with complete 3rd members 4.10 and 4.56. if you want let me know. BC
 
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