Help Needed
Super Moderator
Joined: Apr 2004
Posts: 34,499
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D6AW
D = 1970s
6 = 1976
A = Full size car
W = Axle
Can you post a picture of it?
What bolt pattern does it have? 5 on 4.5" or 5 on 5" or 5 on 5.5"?
Does the carrier drop out of the housing or does the housing have tin cover on the back?
D = 1970s
6 = 1976
A = Full size car
W = Axle
Can you post a picture of it?
What bolt pattern does it have? 5 on 4.5" or 5 on 5" or 5 on 5.5"?
Does the carrier drop out of the housing or does the housing have tin cover on the back?
8th Gear
Joined: Jul 2024
Posts: 8
Likes: 0
Differential
Thanks so much for replying to my question, it has a 10 bolt cover on the back side of the differential housing... if I removed the rear cover the inners will come out from the back side. Not sure if this helps ? Not sure how to measure up the bolt pattern that you are speaking of? Can you advise?
Super Moderator
Joined: Apr 2004
Posts: 34,499
Likes: 2,811
Thanks so much for replying to my question, it has a 10 bolt cover on the back side of the differential housing... if I removed the rear cover the inners will come out from the back side. Not sure if this helps ? Not sure how to measure up the bolt pattern that you are speaking of? Can you advise?
https://www.motortrend.com/how-to/ho...-bolt-circles/
ID the cover:
https://www.onallcylinders.com/2016/...%20axle%20tube.
8th Gear
Joined: Jul 2024
Posts: 8
Likes: 0
Hello: there is no axle tag on the rear diff cover , there probably was at one time? The only numbers that I can find are the ones that I had provided in my original post. I sure wish the tag was still there. Not sure but there is a companion flange and the rear pinion yoke to make up the pinion yoke, I did count the splines on the companion flange which has 30? not sure if this helps to identify any further?
8th Gear
Joined: Jul 2024
Posts: 8
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Good Morning: I have just measured up the axle bolt pattern, the axles in this differential are a 5 bolt on 4 1/4 inch spacing. Does this help to identify it further.? I have been looking at the differential cover and wondering if there is a way to identify it by this or does this just help to identify possible ring gear size.?
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i ain't rite
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8th Gear
Joined: Jul 2024
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what vehicles would of used a 8.7 axle then if that is what it is? I think the pinion nut is 3/4 by 20 ? I thought it might of been a 7.5 or a 8.8..... the differential gaskets look different from each other. Do you happen to know anything more about the 8.7 axle then? thanks
i ain't rite
Joined: Mar 2005
Posts: 65,511
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From: Marlboro Mental Hospital.
8.7 was only used for a few years, 75 to 78 if i remember correctly. it was basically the test bed for the 8.8 axle. they were used in the granada that i know of. \probably also the 6 cylinder LTD's too
8th Gear
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the brake shoes on this axle are 10 inch by 2 1/2 inch, not sure if this gives any more needed informatiom? I would also like to find out the pinion nut torque on this axle as I need to replace the pinion seal in it.... ?
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