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Old 06-23-2018, 02:03 PM   #170
Getter-Done
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Join Date: Dec 2009
Location: TN.
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

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Originally Posted by Getter-Done View Post
Has anyone swapped a H072 from a 1965 C-30 to a 1967 C-30 Cab and Chassis?
Thanks CaptinFab and abig84 for the info.
I came home with just the chunk.

Here is my Numbers I have to share maybe some helpful info someone could use later.
The H072 rear axle I pulled the chuck from today was a 36/8 tooth (4.5 ratio).
It is anybody's guess if it was original.

The vin tag was Gone so No id but(from what I had to go by) it was 64-66 Chevy C-30 with 6 cyl. and sm465 with parking brake on the rear of the trans.
The main info I found out is that the axle housing would be a direct swap to my 67 cab and chassis C-30.
The measurement to the center of each spring perch is 40".
Both trucks have 2 1/2" wide springs.

From the same Pick a part 6 months ago.
There was a 71 GMC 2wd V8 Fleet-side truck (Flint plant).
I pulled the chunk from it was 32/8 tooth (4.0 ratio). this is the one I will use in my truck.

I also bought the doors from this truck. It still had the Blue I.D. sticker on the door.
In the 5th spot was an O or 0. I looked at the Vin decoder that bruceman1968 has on this site.

Name:  Vin Decoder.jpg
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This makes me think that the O was maybe for that 4:11 ratio rear chuck.
Hope this info helps someone.
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