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Old 03-14-2017, 10:49 AM   #1
snipescastle2
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Question for all the differential Guru's.....

Hello everyone! Some of you may recall the 12 bolt differential I bought for my '71. It came out of a '64 C 10. The positraction unit is a rare bird, seems it was made by Dana, and it was only used in '64-'65, same differential as the Corvette, I know where it get the clutches/steels, but the problem with this diff. Is that it has 17 spline axles. Other than setting it up after replacing the bearings and seals, it's been pretty tight, I did however have the dreaded "ratcheting" noise associated with running without the posi additive ( I used the gear oil that supposedly had that blended in) got a bottle at the local GM dealer for $14 and no more noise.

Now, onto my question: I found another 12 bolt posi from a 65' C10 that is similar to the one I have out of the 64' but, this one has 30 spline axles. Does anyone know if the Eaton spider gears will interchange with the Dana ones? The reason I ask is, one of the side gears(splined ones) has the teeth damaged and needs replaced, I haven't tried to disassemble it yet, basically I can't find any documentation showing how it comes apart, it appears to require removal like an Eaton, but I'm not sure. I'd like to save this unit, but if I can't find the parts, might look to put it on EBay.
Anyone, anyone......
Thanks and have a great day!
Here are a few pics:
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"Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time"
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an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten”
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Old 03-15-2017, 11:41 AM   #2
snipescastle2
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Talking Re: Question for all the differential Guru's.....

Well, I got this carrier apart, turns out the clutches
were toast. I believe I have found a set of replacement
spider gears, and I found a set of clutches as well, if I can
confirm this spider gear set part number, I'll be in business.
If not, I'll put the parts on eBay or Craigslist I'm sure somebody
is looking for a part to fix their diff, since no one makes these parts
anymore. I'll post some pictures later if the "Carnage"
Have a great Day!
Ben
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"Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time"
“Serious Black” my 1971 Short Bed Fleetside Sold to
an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten”
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