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Old 08-11-2018, 07:14 PM   #201
Tdbengry
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

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Originally Posted by Getter-Done View Post
Yes .Hold the Pinion still. Then move the carrier back and forth. There should be about (0.010 to 0.030") best I remember.
The Pinion housing was removed thou(right).
If so this could change things.

Pinion depth and the ring gear pressure against the ring go hand in hand.
Maybe you got lucky and the pinion is put back just like it came out.
I'm thinking I lucked out. Here is a video, sorry for the shaking not the best camera man.
https://youtu.be/0KWjT_56X3M
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Old 08-11-2018, 07:18 PM   #202
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

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Originally Posted by Tdbengry View Post
I'm thinking I lucked out. Here is a video, sorry for the shaking not the best camera man.
https://youtu.be/0KWjT_56X3M
Looks good to me.
Now you can clean it up and paint it while you got it out.
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Old 08-11-2018, 07:20 PM   #203
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

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Looks good to me.
Now you can clean it up and paint it while you got it out.
Sweet, hey I really do appreciate you answering all my questions and being straight forward. Not many people like that any more. Well have any color suggestions?
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Old 08-11-2018, 07:24 PM   #204
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

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Sweet, hey I really do appreciate you answering all my questions and being straight forward. Not many people like that any more. Well have any color suggestions?
Glad I could Help. A darker shaded color is good. Pink or white will make all the oil leaks show up
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Old 09-15-2018, 05:01 PM   #205
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

Local junkyard has 1 ton leaf spring 62 Chevy with ho72 and a no spin label on inside of cab most likely 5.14 gear ratio. Can I swap locker or carrier in my 64 3/4 ton that has 4.56 gears with no problems. Was going to just pull out center section . What is the easiest and what is a fair price for center section
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Old 09-15-2018, 05:19 PM   #206
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

according to this article and other posts I've read, yes, the third members are interchangeable..

https://www.stovebolt.com/techtips/a...Ton%20Upgrade/

the prevailing story on the pinion load bolt is that only early 72 had them but later both 52 and 72 had them..

fair price is difficult to estimate for something somewhat difficult to find, especially locally to avoid shipping..

if I found one within an hour drive radius, I'd give 2-300 for good third with locker..

but someone somewhere is probably selling a locker only for $500 and someone else selling a complete axle for $100

best price gauge is what's it worth to you knowing you can't order one from a catalog anywhere

if it helps at all, I'll send you $25 for the plate in the cab if it's actual plate and not a decal and you can get it out without destroying it

good luck!
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Old 09-24-2018, 01:22 AM   #207
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

Picked 3rd member with locker 5.14 gears an no spin plate. Along with some other parts cost me $10.
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Old 09-25-2018, 01:08 AM   #208
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

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Originally Posted by raylube View Post
Picked 3rd member with locker 5.14 gears an no spin plate. Along with some other parts cost me $10.
I'd say you did pretty good on that deal. I would have paid $30 just for the plate!
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Old 09-27-2018, 12:04 PM   #209
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

Iíve read through this post and there is one thing I canít seem to find. I am getting ready to swap the Eaton out of my 65 C30 for a 14 bolt out of a 73 GMC 3/4 ton. Does anybody know if there will be any issues putting the duals on an axle that was originally in a srw truck? I know the width is different but the 4 inches shouldnít make a difference for me.
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Old 09-27-2018, 11:43 PM   #210
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

The one issue I can thing of is whether the wheel studs are of the correct diameter and length for running duals.
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Old 09-28-2018, 06:12 AM   #211
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

I know I will need longer studs. One of the things I will gain with the 14 bolt is it already has 9/16 studs so I wont have to drill the factory drums to run late model rims. My main concern is whether or not my drums will clear dually rims. I found a couple people that say 16" rims wont clear the drums.
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Old 09-29-2018, 12:49 AM   #212
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

While I have not done what you are asking, I do not understand why 16" wheels would not clear the drums. The dually's came with 16" wheels and many dually's came with the larger 13"(?) brakes.
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Old 01-27-2019, 01:11 PM   #213
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

For what its worth, the rear end of my 1962 c 30 is sporting a HO 72 which came with the apparently rare 5.38 gears and as I'm not in the stump removal field I went on the hunt for alternate gearing . I've managed to scrounge up 4 more third member's with ratios 5:13 , 4:57 , 4:10 and a 3:90 which I found in a early 50s one ton panel.
I'm in the Toronto area in Canada and am not sure if the 5:38 and the 3:90 gears were more common in this area or if I just lucked out. The 5:38 is the only third member that doesn't have a side thrust adjustment screw.
I'm still running the original 235 matched to a t5 trans with a .72 0/d and have found that the 4:57 works best .
The only flaw in this set up is the lack of park brake which had been part of the original trans. I see where a kit is available for the 9 in. ford rear end to mount a disc on the drive shaft and a caliper on the rear end to achieve a park brake. Has any one tried any thing like that?
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Old 01-27-2019, 02:44 PM   #214
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

Quote:
Originally Posted by panel fan View Post
For what its worth, the rear end of my 1962 c 30 is sporting a HO 72 which came with the apparently rare 5.38 gears and as I'm not in the stump removal field I went on the hunt for alternate gearing . I've managed to scrounge up 4 more third member's with ratios 5:13 , 4:57 , 4:10 and a 3:90 which I found in a early 50s one ton panel.
I'm in the Toronto area in Canada and am not sure if the 5:38 and the 3:90 gears were more common in this area or if I just lucked out. The 5:38 is the only third member that doesn't have a side thrust adjustment screw.
I'm still running the original 235 matched to a t5 trans with a .72 0/d and have found that the 4:57 works best .
The only flaw in this set up is the lack of park brake which had been part of the original trans. I see where a kit is available for the 9 in. ford rear end to mount a disc on the drive shaft and a caliper on the rear end to achieve a park brake. Has any one tried any thing like that?
I would LOVE to see pictures of the 3.90! That's the golden rainbow unicorn.
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Old 01-27-2019, 03:04 PM   #215
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

5.38 can be useful with aftermarket gears for the 4x4 guys . you can get 5.38 for dana 60 fronts and other front axles . and the ho series has better ground clearance over a 14ff .
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Old 01-27-2019, 06:32 PM   #216
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

Jeremy , I will figure out how to post pictures when I remove the 3:90 from the truck in April as I am presently out of the country , actually I'm in your country till the end of March .
I took a quick look at the crown gear before installing and it had a what I believed was a G M model number stamped on it as well as the numbers 39x10.which I understand means a 3:90 ratio which is backed up by the online sight ( ONLINE CONVERSIONS) which matches up to speeds obtained at given r.p.m. in different gears.
I assure you I was quite surprised to find the 3:90 in the housing I bought as I was expecting a 5:13

Until then
John
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Old 01-28-2019, 12:05 AM   #217
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

This is the first time I have heard of anyone having the elusive 3.90 gears.
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Old 02-03-2019, 09:16 PM   #218
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Re: Eaton HO72/HO52 vs. 14 Bolt FF

Quote:
Originally Posted by panel fan View Post
For what its worth, the rear end of my 1962 c 30 is sporting a HO 72 which came with the apparently rare 5.38 gears and as I'm not in the stump removal field I went on the hunt for alternate gearing . I've managed to scrounge up 4 more third member's with ratios 5:13 , 4:57 , 4:10 and a 3:90 which I found in a early 50s one ton panel.
I'm in the Toronto area in Canada and am not sure if the 5:38 and the 3:90 gears were more common in this area or if I just lucked out. The 5:38 is the only third member that doesn't have a side thrust adjustment screw.
I'm still running the original 235 matched to a t5 trans with a .72 0/d and have found that the 4:57 works best .
The only flaw in this set up is the lack of park brake which had been part of the original trans. I see where a kit is available for the 9 in. ford rear end to mount a disc on the drive shaft and a caliper on the rear end to achieve a park brake. Has any one tried any thing like that?
Plenty of HO 52 and 72 equipped trucks came with the parking brake on the rear rather than the trans. I would think that it would be easier to adapt one of those set ups to yours. In theory a bolt on change, and if you use something from a later truck you get self adjusters in the deal. Something to consider
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