I know everyone else wants to lower these cars, not me. I did search and found plenty of lowering advice and never once did I see a how I raised my wagon, or when asked a couple of times raising but never a completed answer for raising or at least keeping stock height with additional spring rate.
Stock spring is Moog 5402 Free height 17.65", installed height 12.00", rate 338 lbs., load 1907 lbs.
I would like to raise the front of my 93 RMW 1/2"-3/4" and firm up the suspension to around 550lbs rate. I have used the police spring in a 98 Lincoln Town Car; however, that was a bit firmer than I would've liked. The spring was a Moog 80090. It was to firm for what I wanted for that car and this wagon too. Additionally the 80090 specs out at a free height of 14.38" and installs at 11.75" 1/4" lower than stock for the wagon. Rate 710 lbs., load 2034lbs.
Now the Moog 81096 looks good for rate at 555 lbs. but it too sits too low at installed height 11.50" and is also shorter at free height of 15.01", load of 1950 lbs.
All of the higher rate springs sit too low , and have a shorter free height. I fully admit I do not completely under stand the free height's significance, I suspect it's a ride quality thing, but again I just don't know.
The rear has Moog 623's and Gabriel load levelers with the external springs on the shock. Lowering the rear is my least favorite option.
Anyway, if anyone can shed some light on a spring that will do what I'm after please share.
Edit: More research shows a 1977 Lincoln Continental has a Moog 9102 Free height 17.63" Install height 12.00" Rate 498 Lbs. (This looks good) Load 2850 Lbs. {Unsure if this really matters} I think it just means I could carry more weight at the 12" height. All that really matters is Spring Rate.
If anyone knows for sure this is wrong please let me know, otherwise this seems like what I will try.