Spring Arch ?

[67 Tiger]

Because my car has been sitting for so long, my rear springs have lost some arch. I would like to know what the stock arch is ,so I can tell how much they have lost. Anybody know what the stock arch is? Thanks.

[0neoffive]

My foggy brain vaguely recalls 3/4" measured down from the center of front & rear bolt holes (at loaded rest). My usual practice is to replace the 2nd leaf with a common (new) jeep 1/4" full length. Works great without over stiffening the ride!

[67 Tiger]

I just ran a string from the front bolt to the rear,it measured a little more than 5/8", so I guess my springs aren't as bad as I thought.