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Is this an AMC 20 rear end? |
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SentencedToBurn
AMC Fan Joined: Dec/09/2017 Location: New Zealand Status: Offline Points: 21 |
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Posted: Jun/23/2018 at 10:18pm |
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Apologies if I've missed this somewhere on the forum, I keep getting conflicting information and just want to sure this up before I order wrong bearings etc.
I need to replace rear end bearings in my '66 Classic 770 232. I've pulled the axles out, going to get replacement kits for wheel cylinders and all the brakes too while I'm at it. But when I went to get the bearing kits, I keep coming across flanges which have 5 holes in them, where my diff only has 4 holes. Also a few youtube clips that I saw clearly show 5 holes on the diff housing, and mine only has 4. My diff is a 12 bolt which is why I assumed it was an AMC 20. Or are there different types of AMC 20 rear ends and mine only has 4 holes on the axle housing but some later ones have 5, and all are interchangable? Couple of pics below, if anyone could please tell me what type of diff this, or if you need me to take pics of it from another angle if there are any markings I need to be looking for? Any help would be appreciated. (p.s. yup ill definitely be replacing the diff cover seal too) |
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3314 |
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yes that round cover is a model 20
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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SentencedToBurn
AMC Fan Joined: Dec/09/2017 Location: New Zealand Status: Offline Points: 21 |
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Hey thank you for that. So just to confirm, as an example, here there are 5 bolt holes: https://www.amazon.com/Yukon-AK-M20-Bearing-Differential/dp/B0078U8LE2/ref=sr_1_1?ie=UTF8&qid=1529815779&sr=8-1&keywords=amc+20+bearing+kit Does this mean the 5th bottom bolt hole just isn't connected to anything on my diff housing?
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3314 |
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On later model 20 diffs the fifth hole is a drain in case the seal leaks. fluid will run out the back of the brake backing plate. I am not sure if the seals used on your car are like this or not.
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3314 |
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Napa lists one that looks like the flange you have, limited info so not sure if its correct or not.
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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SentencedToBurn
AMC Fan Joined: Dec/09/2017 Location: New Zealand Status: Offline Points: 21 |
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Great thanks again for your help. I'll do a bit more digging and will get them shipped out.
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