Discussion in 'Got gears?' started by GMMADMAN, Apr 25, 2018.
What's the best axle bearing/seal kit for my '72 Skylark 10 bolt 8.5 rear end? Thanks
Timken SET9 and 712146
Do NOT get the thinner 2146. Some suppliers will say its the same,but it is not.
same as an 8.2 then huh Brian? are the wheel seals the same as well?
x2 on the seal. Get the wrong one and this is the result:
The 1970 Buick 8.2 takes the same SET9 bearing and 712146 seal.
All depends - I have seen 1970 Buick 8.25 pontiac 8.2 and olds 12 bolt with 2146 seals.... Measuring is the only way to tell. I have not come up with a trail of info or plants or dates on this info...
Just parted out a lot of rears.
Yes,I have pulled some apart with the 2146 seals,but I will NEVER reassemble them with those. You could get away with some axle movement with the original style straight-roller bearings,but with the modern tapered-roller,you can NOT. The cone needs to remain seated in the cup. The thinner seal usually does not allow a positive seat,and therefore the cone can unseat from the cup,and you have unwanted slop,which then leads to the axle pulling up on the seal,and letting the oil leak out.
I believe the right seals are .490" thick. The WRONG ones are .375".
That is why I said you have to measure the thickness needed. There were some rears where you could not use the 712146 seal it was hanging out WAY too far. Most were PONTIAC so it may not pertain to most Buick guys. Jim