Originally Posted by RowJ
Have a set of lift springs here and needed to know how much lift they offered!
Your estimate based on the provided measurement of the stock springs may be close, or nowhere near close. Depending on the type of spring, spring rate, etc. it could be very different from what you measure. Best bet would be to either contact the company who made them and ask for more details if possible, or just install them.
Just an FYI.