front leaf mounting bolt size for A body

What size front spring bolt should be used with cal-tracs? Spring box has a 1/2" hole but aluminum bushing in spring in much bigger. Been using 1/2" bolt but thinking maybe I should be using something bigger.

5/8" in my Calvert monos.

I use Calvert monos as well. Didn't measure the bolt hole in the aluminum bushing but it looks like it might be 3/4" opening.

I'll double check mine tomorrow.

Stock A body hangers can be 1/2 or 9/16 or 5/8 bolt size. The aftermarket stuff is all 5/8 bolt size.

Thanks Andy. I'll get some 5/8 bolts.

If you want to use the size you have, call calvert and ask them for the correct sized steel pivot sleeve. They have them.

thanks. ill give them a call.