Lee J
Active Member
I recently installed a 8.75 sure grip in my 48 plymouth with 323 gears. I bought the third member used, a cone posi. I took it to a gear shop to have a visual check done. He used a little paint and thought everything looked ok with how the gears mated up. I had checked the lash and it was at .011 and spec is .006-.010. After I installed it there are two things. First the rear end howles a little between 35 to 40, not to concerned, even though I was very careful to get my angles correct. I think I have 5 degrees total. The other thing that I'm more concerned about is the amount of play it has rotation wise, from neural to in gear. I remember before I installed it I could rock it back and forth some I just wasn't sure how much was normal. The other thing I realized after it was installed was that there is a small crack from one of the holes for mounting the third member to the axle housing. I don't know if this was caused by sress from over tightening the nut or if this could have been caused from something else. I installed the gasket when installing the pumpkin and don't know if it's better just to use silicon . Maybe this would seal it up. Any advice would be appreciated. Thanks