I am putting a lift on my 77 f-150 4x4, I went to order new 6 inch rear springs and found out skyjacker has different 6 inch springs for the f150 and the f250, the 77 1/2-79 f250. the 6 inch springs for the 150 are the same as the 4 inch springs for the 250, and the 9 inch springs for the 150 are the same as the 6 inch springs for the 250. I thought a set of 6 inch springs was the same lift on a 150 as on a 250? I thought the springs were the same, just a few more leafs on the 250, they sit about the same in stock form. I was gonna order 250 springs to mabye get a little more capacity, but don't want to sit 3 inches higher in the back. Just curious if anyone has any ideas on this, and which springs I should get,
thanks for any help.

 

Best bet is to call skyjacker.