Hi.
I am trying to figure out if the springs I have for my 68 Chevelle are any good. I have taken some measurements of them. So I hoped someone here could tell me if they are I should use them. I don’t know what brand they are.
The car has a BBC 498cid, th400 and a 12 bolt rear.

Front
Number of coils: 8.25 inch
Outside diameter: 4.8 inch
Wire diameter: 0.7 inch
Spring height: 13.4 inch

Rear
Number of coils: 6 inch
Outside diameter: 6.5 inch
Wire diameter: 0.7 inch
Spring height: 13.7 inch

This is what I found after using an online sprig calculator:
Front 607 lbs/in
Rear 151 lbs/in

Helge