bw1339

Hello,
I'm putting a '75 final drive in my '66. After resealing it, I noticed that the driver's side output flange has about 0.040" of side to side play, and about the same in in-out play. I can see the driver's side diff gear moving with it.

I have a couple of '66 final drives and that flange is rock solid in both of them. But these have planetary differentials, vs a conventional one in mine. Is this normal? Unfortunately I didn't check if the play was there before I did anything to it, but all I did was pull the flange and replace the seal.

Thanks.