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  1. 70 Sport Suburban

    Working on a 400

    I just used RTV on my 440 pan.
  2. 70 Sport Suburban

    Sure grip issue

    I got lucky with the guy that runs the junk yard he pulled out his book and let me take a picture of what i needed to look for.
  3. 70 Sport Suburban

    Sure grip issue

    So i wanna thank everyone for there help with my sure grip issue. I took my axles out and measured them and yup someone switched them out. I got lucky and went to a yard the guy had a parts book looked everything up and found out what wagons and trucks and vans i could use. A buddy had just got...
  4. 70 Sport Suburban

    Sure grip issue

    Ok ill measure with the axles in i did measure backing plate to backing plate and it was 57 which meets what I've seen online. My axle didn't have the piece to adjust axle play either.
  5. 70 Sport Suburban

    Sure grip issue

    Just trying everything that people are saying for help. I measured my alxes and they don't match to what i found online mine are shorter. My housing backing plate to plate is the right length so somewhere in the past someone took the 3.23 open out and possibly put shorter axles and the 2.76 that...
  6. 70 Sport Suburban

    Sure grip issue

    So the 1st set of 3.91s they were in my friends 71 Sport Fury GT. So i looked up what size axles and diff measurement and were gonna measure if there is any difference in the 2.76 vs 3.91s but i measured my axles and they were around 30 3/4 wasn't my wagon supposed to be 31 or 31 21/64 could...
  7. 70 Sport Suburban

    Sure grip issue

    That what my friends are thinking also when i slide the axles in they don't pop in until its close to the backing plate. I thought it should be a little farther out but im glad to be part of this group always helpful im heading to a yard this Friday lots of c bodies gonna pull some alxes. And...
  8. 70 Sport Suburban

    Sure grip issue

    Both sets of gears came from friends that used them before neither can believe that 2 sets both went bad out of nowhere but anything can happen.
  9. 70 Sport Suburban

    Sure grip issue

    I was looking for a sure grip and my friend had a set that's why i pulled them no issues i actually drove it a hour before pulling the gears. Last night my friend came over we set the car on the ground and put it in gear and the driveshaft spins and doesn't move the car we lifted up the pass...
  10. 70 Sport Suburban

    Sure grip issue

    Yes two different 3.91s sets and same problem i drove my car last night with the 2.76 and put the other gears in last night after driving it. I haven't put the 2.76 back in yet and try them.
  11. 70 Sport Suburban

    Sure grip issue

    So i didn't have a sure grip addictive i put in a 75w90 full synthetic gear lube only ran a few times trying to figure it out. A buddy said i should put a staright 90 with the sure grip addictive and leave it off the ground and let it spin. The 489 3.91s came out of a 71 GT my friend had so I've...
  12. 70 Sport Suburban

    Sure grip issue

    And also a buddy gave me his 741 case 3.91s and it does the same thing.
  13. 70 Sport Suburban

    Sure grip issue

    Ok hopefully i can explain this the right way my 70 Wagon was supposed to be a open 3.23. Well last night i pulled the gears found out it was a 2.76 open 489 case. I got a set of 3.91s sure grip 489 case from a friend of mine put them in if i have the wagon in the air everything is fine. Wheels...
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