john-9
Well-Known Member
pinion yoke nut size 1-1/4 socket fine 29 spline yoke ( 1-5/16 nut fine 29 spline as well ) 1-1/8 socket coarse 10 spline ,, early 489 cases were 10 spline then went to 29 spline as production ramped up.
Question about yoke for 8 3/4" 489 case rear end.
- Thread starter 1968_Satellite
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1968_Satellite
Well-Known Member
If I may ask one more question. Why did Chrysler make a 741,742 and 489 case and make the 489 a crush sleeve style when the others arent? Was there a reason or is this just another "because they did" unexplainable thing.
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Ease of assembly. Remember they're making cool cars,,, but trying to make bank @ the same time
1968_Satellite
Well-Known Member
So the 1 1/8" socket wont fit over the pinion nut. That would mean mine is the 29 spline yoke
A week or so ago, I worked on my 489. 1 5/16" socket needed and it was a 29 spline.
1968_Satellite
Well-Known Member
Yes that was what I heard too is that 10 spline is 1 1/8 in socket if that doesn't work then you automatically know that it's a 29 spline. So the good news is that I know it's a 29 spline now, the bad news is I now bought a one and 1/8 inch socket that I can't use on anything else.lol
33 IMP
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I use my 1 1/8 quite a bit. Four link and Ladder bar rod end bolts, and also the nut for the ball on a receiver hitch. But I feel your pain. I had to buy a giant 36mm socket to change the oil filter on my F550. I'll NEVER need it for anything else, ever.
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I went the inexpensive route. Got one off of Amazon. 1/2" drive.
1968_Satellite
Well-Known Member
I paid $10 plus tax for mine. Now I have to buy another one for the larger nut for the 29 spline yoke
Stink I got mine from where I use to work.....I don't do that stuff anymore though.
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