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  1. 3

    Mopar 8 3/4 Clutch Type Sure Grip Case 742

    Another question, I have installed both sides of the button with the pin into the central hole between the 2 gear sets. When holding one side of the button flush against the casing, the other side comes out that far. Is that the way it should be? Just want to confirm because I've never done this...
  2. 3

    Mopar 8 3/4 Clutch Type Sure Grip Case 742

    Haha, that makes two of us now. Thanks for the suggestion!
  3. 3

    Mopar 8 3/4 Clutch Type Sure Grip Case 742

    Hey guys, I'm in the process of determining shim stack on the pinion gear in the dif. I believe I have read that the torque of the pinion nut is 240 ft lbs. In order to reach that torque, is the only way to install the dif back on the vehicle? Is there any way it can be done off the vehicle...
  4. 3

    8 3/4 rear end confusion

    Actually, I just found the answer to the spacer/button question. I wasn't aware that this is where the button actually ends up. I ordered a new one and will install it. Regarding the cracked clutch, it might just be best to order a whole new clutch pack just to be safe. These clutches have some...
  5. 3

    8 3/4 rear end confusion

    Hello, hope everyone is doing well. I am currently assembling my 8 3/4 differential sure grip clutch type carrier after I took it apart and had the machine shop clean it to get rid of all the metal shavings. Two things came to mind as I was putting it back together. First off, do those pinion...
  6. 3

    8 3/4 rear end confusion

    Hey guys, hope everyone is doing well. I’m in the process of tearing down the differential and I have already ordered new bearings and gears. I’m going to reuse the carrier and just have a machine shop hot tank all the components and rinse them. It’s already taken apart. I have a question when...
  7. 3

    8 3/4 rear end confusion

    I pulled the diff and was able to find the second button at the bottom of the casing. The button honestly looks completely intact so idk what that material is from. It does seem like there are some shavings throughout the gears. Don’t know if I can just hot tank the entire thing or if I have to...
  8. 3

    8 3/4 rear end confusion

    I purchased a flexible magnet and was able to fish it to the bottom of the dif. Couldn’t get ahold of the button but each time I brought the magnet out, there was lots of ground up (flaky) material that got caught by the magnet. Now I’m thinking the previous owner had ran the car with the button...
  9. 3

    8 3/4 rear end confusion

    Hello everyone, I have another update. After almost a week straight of rain, I was able to get outside and take out the passenger side axle to see if the button is still in place. It is not and I can't see this one laying there the way I could see the driver's side. I guess this means I have to...
  10. 3

    8 3/4 rear end confusion

    Okay I will check to see if the passenger side button is still in place. I guess I got lucky that the driver side didn’t fall into the dif. What do you mean when you say use two LH bearing retainers with the green bearings? What does LH stand for?
  11. 3

    8 3/4 rear end confusion

    Okay I see, I’ll pull the passenger side axle again to see if the button is still in place. I’ll do my best to get the axles in without allowing the buttons to fall out. If I can’t get it, I’ll just pull out both buttons and use the green bearings. Idk if I want to pull the dif out just yet...
  12. 3

    8 3/4 rear end confusion

    I was able to get the button with the pin through it back into the hole and all I did was slightly swipe the magnet sideways and I stuck a conjunction of extensions through the axle housing up until I hit the button and while holding the button in place with the extensions, I pulled back on the...
  13. 3

    8 3/4 rear end confusion

    I finally decided to go the easy route and shine a light through the axle housing to see what's in there, I know I should have done this from the beginning. And of course, I see the button laying out of place. I took it out with a magnet and attached pics of how it was sitting in the housing...
  14. 3

    8 3/4 rear end confusion

    And let's just say I do have the thrust buttons with the pin and they are out of place and maybe fell to the bottom of the dif, would that prevent me from putting one of the axles all the way in? Aren't those buttons just for end play?
  15. 3

    8 3/4 rear end confusion

    srt12-340, I keep reading that the cone type has a thrust block and that the clutch type has the buttons and pin. These are very new terms to me and I'm not doubting anyone, just a bit confused. On page one of this thread, cudamark stated that the cone type has a spacer which is just one piece...
  16. 3

    8 3/4 rear end confusion

    I have tried having someone rotate the driveshaft. I'll give it another shot tomorrow. So you're just saying to spin the driveshaft back and forth while someone is applying constant pressure on the axle inwards? When the car is in neutral, I'm pretty sure I can only spin the driveshaft one way...
  17. 3

    8 3/4 rear end confusion

    Hello everyone. So I tried most of the ideas provided in this thread and here's how it went. As you all know, I was having lots of trouble getting the driver side axle to fully slide into place. So then I went to the passenger side.. I was able to get the passenger side axle in super easily and...
  18. 3

    8 3/4 rear end confusion

    Thank you guys for the replies, I do believe it is just an issue with lining up the secondary splines. Here are pics of the wheel seal, don't know if they're good enough to help y'all decide whether I did it right or not but I think it's good.
  19. 3

    8 3/4 rear end confusion

    Thank you everyone for the replies! I will first shine a light to make sure that the thrust button hasn't interfered with the splines. I will then get the car into neutral and have someone move the driveshaft around while I try to wiggle the axle into place. Mounting the tire back on for...
  20. 3

    8 3/4 rear end confusion

    So should I put it in neutral and spin the rear end to try to line up the secondary splines?
  21. 3

    8 3/4 rear end confusion

    Oh okay so if it’s a sure grip then it would have to be in neutral for the rear axles to spin? Didn’t know that, thanks.
  22. 3

    8 3/4 rear end confusion

    It’s in park and I know the driveshaft won’t turn but wouldn’t the axles still be able to spin?
  23. 3

    8 3/4 rear end confusion

    Hello guys, I was re-doing the brakes on my 1973 roadrunner with a 340 and I ended up doing the inner axle seals as well. As you guys know, the axles have to come out and I was in the process of putting the driver's side axle back but it will not seat completely. I have done some research and...
  24. 3

    Drum and Shoe Size

    2nd photo also has the shoes sitting too far out, the angle just hides it.
  25. 3

    Drum and Shoe Size

    They’re all from the same setup, just different angles. Look at 3rd photo in post #6. Don’t those shoes look to be sitting too far out?
  26. 3

    Drum and Shoe Size

    I have attached a couple different photo angles to show how the new 2 1/2in shoes sit in relation to the spring and cable holder. They are sitting a bit too high up and both springs won't fit under the groove. Should I find a thinner plate that sits under the self adjuster cable and springs...
  27. 3

    Drum and Shoe Size

    I appreciate that. I just went and measured and I got 1.75" which means my shoes should be 11x2.5". I tried putting new 11x2.5" shoes on that backing plate a couple days ago but the way the top of shoes encompass that round elevated bit where the springs and self adjuster cable get connected to...
  28. 3

    Drum and Shoe Size

    Here is the backing plate.
  29. 3

    Drum and Shoe Size

    Hello guys, still in the process of re-doing the rear brakes on my 1973 roadrunner. I have attached some pictures of measurements because I keep running into issues with the assembly of the drums. From the research I've done, I believe I'm supposed to have 11in x 2 1/2in brakes in the rear...
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