Can someone please tell me the size of the 4 rear upper shock bolts for a 1970 Cutlass, thnx.

 

From what I could remember, they were 5/16" x 1", with 1/2" hex head....
Kinda a PITA to work with since they had nuts on 'em.

 

.... especially if your body mounts are getting old and the body is sitting down lower. Not much room for your fingers up there. Make sure the bolts aren't too long; I could see the body hitting them on big bumps and making a lot of noise.

 

Never thought about the body mounts...
To be on the safe side get a set of 1/2" and 3/4" as I cannot remember the exact length. I doubt 1" is even needed.
They felt like 3" when trying to get them off!
Get a grade the is equal to or better than the originals.
I think they had lockwashers on them also...
Tractor Supply is a good source - they sell them by the pound.