You can do much better than guesstimating spring length
Check specs at the old car manual website then verify what that will look like under your truck…
http://chevy.oldcarmanualproject.com/shop/1954truck/index.html Front Springs on my 46 were so flat the shackle was fully up against the frame, huge ride and ride height difference when a new set of springs and hardware went in…..
Btw, my Jim Carter springs were from St Louis Spring, his have the eyes bent facing per the original design, which on my 46 is not how i normally expect see them…
