just replace upper ball joints in 70 chevelle as we all know they are bolt in now do the bolts go from top, nuts on bottom or bolts thru bottom nuts on top? saw upper control arm come thru work today (bodyshop) bolts thru bottom nuts on top i forget what make of car the part was for. thanks

I don't think it should matter, since it's not original rivets. In aviation, you would have the nuts on the bottom, so if the nut fell off, the bolt would have a better chance of staying in, compared to if it was installed the other way. With the ball joint, though, if you lose the bolts it's not going to matter much if they stay in or not.

On my car the nuts were on the top. I imagine so there is less to bind if there ever was extreme movement of the suspension but Gene sure has a good point. Skip

maybe some loc tight just to be sure

I installed mine with nuts on top.

Nut's on top they interfear on the bottom


I don't think it should matter, since it's not original rivets. In aviation, you would have the nuts on the bottom, so if the nut fell off, the bolt would have a better chance of staying in, compared to if it was installed the other way. With the ball joint, though, if you lose the bolts it's not going to matter much if they stay in or not.
Hey Gene where and what type A/C are you working on?

thanks everyone storm

Originally posted by 69SSRat:
Nut's on top they interfear on the bottom
Hey Gene where and what type A/C are you working on? That's from back in my Navy days. I was an avionics tech in a test and evaluation squadon for attack aircraft (VX-5 in China Lake,CA). At the time, it was A-4M, TA-4J, A-6E, A-7E, TA-7C, AH-1J, AH-1T and UH-1N.

Loc tight? Let's talk safety wire ;)

COOL Gene
I don't want to get in to saftey wire we would have to explane alot :D

I was just curious like to keep up with those in the buissness,Myself sheetmetal and line work for Fedex.

Wait till you see the size of the new Airbus 380 :eek: