Leaf springs too soft

Cougar Community Classic Cougar Maintenance Restoration and Repair
1

I don’t like how soft the rear leaf springs are. They are new leafs I replaced during the restoration and they obviously aren’t the heavy duty ones.
I don’t want to replace them again so am wondering if adding a leaf would do the trick. I know re-arching them would raise the rear end but I don’t think would make them any stiffer. So which leaf would it be best to add? I’m sure adding the shorty #4 would be useless, but how about one of the others (other than #1)? I was even thinking of taking one of the leaves out of my old set and adding it on each side ??? Suggestions or ideas?? Thanks.

photo of spring setup

2

Here’s an less invasive option; http://www.jcwhitney.com/quick-change-helpers/p2005887.jcwx?filterid=c11305u0j1 have these on my '69. About 1/2 hour to install,…took the spongy compression out of the rear suspension. Use the 7 & 1/2"H version. Top of coil will rest on bump stop plate when installed. Definitely stiffer!

3

Adding a leaf will defintely stiffen it up. I have an extra leaf on my '68 which was added when i had the rear leaves re-arced in ‘83. It’s’ still stiffer than stock to this day.