I want to put a 4" lift on my 78 F250 supercab 4x4 and i though going with high boy front leaf springs and blocks or a couple add-a-leafs in the rear would be a good way to go. well i was wondering if i got the front leaf springs from a high boy and either blocks or some add-a-leafs would that be all i need or do i need more? if i need to get something else what would it be?

thanks for any help.

 

In theory you would net about 4" of lift but under real world conditions i wouldn't expect much more than 2" of lift, you're talking about 35yr old springs here with hundreds of thousands of hard miles on them, spring fatigue has long set in.

 

but what all would i need to make this work?