school me on rebuilding an 8.75
#477741
09/23/09 05:36 PM
09/23/09 05:36 PM
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Joined: Sep 2007
Posts: 5,037
hi
sharpie
OP
Moparts Linguist
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OP
Moparts Linguist
Joined: Sep 2007
Posts: 5,037
hi
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So I picked up my BBP 8.75 a couple days ago. It's from a 66-70 B-body, so it should fit under the Demon without much hassle. It's a 742 case open 2.94 center section
I took it all apart, and this is what I found:
Before taking it apart, I turned over the gearset from the pinion. No backlash either direction from the pinion itself, and the axles turned nicely.
I took the axles out first and checked the splines. No issues with the splines that I can tell. No chipping, warping, or twisting.
I took the chunk out to look at it (and count the gearset) and it looks good inside. All the teeth look fine.
So i need a little schooling on what I need to/should replace, what I need to/should buy, and how to clean it well!
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Re: school me on rebuilding an 8.75
[Re: sharpie]
#477743
09/23/09 06:21 PM
09/23/09 06:21 PM
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Joined: Jan 2004
Posts: 5,476
340dart4spd
Parts Problem
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Parts Problem
Joined: Jan 2004
Posts: 5,476
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Quote:
So I picked up my BBP 8.75 a couple days ago. It's from a 66-70 B-body, so it should fit under the Demon without much hassle. It's a 742 case open 2.94 center section
I took it all apart, and this is what I found:
Before taking it apart, I turned over the gearset from the pinion. No backlash either direction from the pinion itself, and the axles turned nicely.
I took the axles out first and checked the splines. No issues with the splines that I can tell. No chipping, warping, or twisting.
I took the chunk out to look at it (and count the gearset) and it looks good inside. All the teeth look fine.
So i need a little schooling on what I need to/should replace, what I need to/should buy, and how to clean it well!
it will slide right in.... you will be limited with stock wheels.....
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Re: school me on rebuilding an 8.75
[Re: 340dart4spd ]
#477744
09/23/09 06:30 PM
09/23/09 06:30 PM
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Joined: Sep 2007
Posts: 5,037
hi
sharpie
OP
Moparts Linguist
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OP
Moparts Linguist
Joined: Sep 2007
Posts: 5,037
hi
|
Quote:
No need to replace anything except possibly the axle seals if it was wet at the flange. Clean it with spray brake clean and reinstall. Be sure to add the suregrip aditive with the rearend lube.
It's a peg-leg. Hence the "open gearing".
Quote:
Quote:
So I picked up my BBP 8.75 a couple days ago. It's from a 66-70 B-body, so it should fit under the Demon without much hassle. It's a 742 case open 2.94 center section
I took it all apart, and this is what I found:
Before taking it apart, I turned over the gearset from the pinion. No backlash either direction from the pinion itself, and the axles turned nicely.
I took the axles out first and checked the splines. No issues with the splines that I can tell. No chipping, warping, or twisting.
I took the chunk out to look at it (and count the gearset) and it looks good inside. All the teeth look fine.
So i need a little schooling on what I need to/should replace, what I need to/should buy, and how to clean it well!
it will slide right in.... you will be limited with stock wheels.....
What I'm worried about is buying the right parts. I'm missing the brake backing plates (I have an 8.25" axle with the backing plates, will those work?). I'm also missing all of the drum hardware.
What do you mean by "limited with the stock wheels?"
Last edited by sharpie; 09/23/09 06:30 PM.
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Re: school me on rebuilding an 8.75
[Re: sharpie]
#477746
09/23/09 07:46 PM
09/23/09 07:46 PM
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Joined: Jan 2004
Posts: 5,476
340dart4spd
Parts Problem
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Parts Problem
Joined: Jan 2004
Posts: 5,476
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Quote:
Quote:
No need to replace anything except possibly the axle seals if it was wet at the flange. Clean it with spray brake clean and reinstall. Be sure to add the suregrip aditive with the rearend lube.
It's a peg-leg. Hence the "open gearing".
Quote:
Quote:
So I picked up my BBP 8.75 a couple days ago. It's from a 66-70 B-body, so it should fit under the Demon without much hassle. It's a 742 case open 2.94 center section
I took it all apart, and this is what I found:
Before taking it apart, I turned over the gearset from the pinion. No backlash either direction from the pinion itself, and the axles turned nicely.
I took the axles out first and checked the splines. No issues with the splines that I can tell. No chipping, warping, or twisting.
I took the chunk out to look at it (and count the gearset) and it looks good inside. All the teeth look fine.
So i need a little schooling on what I need to/should replace, what I need to/should buy, and how to clean it well!
it will slide right in.... you will be limited with stock wheels.....
What I'm worried about is buying the right parts. I'm missing the brake backing plates (I have an 8.25" axle with the backing plates, will those work?). I'm also missing all of the drum hardware.
What do you mean by "limited with the stock wheels?"
send me a email sfisher@fairpoint.net
i can explain
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Re: school me on rebuilding an 8.75
[Re: 340dart4spd ]
#477748
09/23/09 07:55 PM
09/23/09 07:55 PM
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Joined: Nov 2005
Posts: 15,118
85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
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I have a b-body rear end under my 72 Duster. The perches needed to be moved in to make it bolt up. But I have factory magnum cop car style 15" X 7" wheels and it looks good on the wheel placement. If anything you will need a wheel with a 5.5" back spaced wheel to bring it back to factory position. 
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: school me on rebuilding an 8.75
[Re: 340dart4spd ]
#477749
09/23/09 10:07 PM
09/23/09 10:07 PM
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Joined: Jan 2003
Posts: 8,479
Candler,NC / Myrtle Beach, SC
JDMopar
master
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master
Joined: Jan 2003
Posts: 8,479
Candler,NC / Myrtle Beach, SC
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Quote:
Quote:
Quote:
No need to replace anything except possibly the axle seals if it was wet at the flange. Clean it with spray brake clean and reinstall. Be sure to add the suregrip aditive with the rearend lube.
It's a peg-leg. Hence the "open gearing".
Quote:
Quote:
So I picked up my BBP 8.75 a couple days ago. It's from a 66-70 B-body, so it should fit under the Demon without much hassle. It's a 742 case open 2.94 center section
I took it all apart, and this is what I found:
Before taking it apart, I turned over the gearset from the pinion. No backlash either direction from the pinion itself, and the axles turned nicely.
I took the axles out first and checked the splines. No issues with the splines that I can tell. No chipping, warping, or twisting.
I took the chunk out to look at it (and count the gearset) and it looks good inside. All the teeth look fine.
So i need a little schooling on what I need to/should replace, what I need to/should buy, and how to clean it well!
it will slide right in.... you will be limited with stock wheels.....
What I'm worried about is buying the right parts. I'm missing the brake backing plates (I have an 8.25" axle with the backing plates, will those work?). I'm also missing all of the drum hardware.
What do you mean by "limited with the stock wheels?"
send me a email sfisher@fairpoint.net
i can explain
If it's not gonna land you in jail....post it here. It will help me too. 
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