Another nice Coil Spacer install Write up by BrotherJackTools you will need to follow this How-To:
Spring compressors (the kind that clamp on the outside of the spring). In Canada, you can borrow a set from any Canadian Tire for free. They run about $24.99 if you have to buy a set.
Metric socket set (preferably with a long handled wrench).
If you're using Jeep spacers, a reasonably torque-y drill with a 2 1/2 (2.5) inch hole saw bit, and a knife.
A jack (floor-jack is preferred), and something safe to use for jackstands (like real jackstands).
Parts you will need:
Coil spacers (I used .75 inch Jeep spacers for the front, and 1.75 inch jeep spacers for the back).
2 rear shocks from a 91 Crown Victoria (actually, I think anything from 70-something to 98 will work)
Directions:
Jack up the rear of the truck by the frame till the rear tires are a good ways off the ground, and put in jackstands.
Remove rear tires.
Remove rear shocks (1 horozontal bolt at the bottom, and the threaded stud at the top)
Remove rear springs.
If you're using Jeep spacers, drill out the center of the spacer with the 2.5 inch hole saw bit. Drill almost all the way through, but stop before you cut off the lip at the bottom. Take your knife and trim out the center you just cut loose with the hole saw. Note: a cordless drill will take FOREVER doing this job - ask me how I know. Get a plug-in drill with some torque.
Install spacer on bumpstop.
Re-install spring. On my truck, I needed to use the spring compressors to compress the springs about 2 inches before they would fit back on.
Bolt in the top stud on the CrownVic shocks. Then, using the jack under the axle, bring the axle up till the bottom holes allign, and bolt them down tight. If you don't use CrownVic shocks (or some other longer shock), you will soon get used to the sound of your stock shocks hitting full extention on every little bump in the road. Ask me how I know.
Put the tires back on, and lower the rear back to the ground. The rear is all done.
Now for the front.
Break loose the front lug-nuts before jacking it up.
Jack up the front, and install jack-stands under the frame or the front crossmember.
Remove tires.
Turn wheel left or right to allow you better access to the spring and lower strut mounts, depending on the side you are doing.
Put the jack under the A-arm so it doesn't flop around once you do the following:
Take loose the lower strut mount (two bolts). You'll have to be careful and wiggle the lower one to get it out, because it hits the bleeder on the brakes (but you can get it out without removing the caliper or anything, just have to be careful and wiggle it a bit). You may need to run the jack up a little bit to stop the bolts from binding as you remove them.
Put a spring compressor on the spring, give it enough turns to tighten it firmly, and then lower the jack. Spring should either pop right out, or be very close to poping out. Use spring compressor a little more if necessiary. Since you will need more spring compression to re-install the springs than you will to un-install the srpings, it might be a good idea here to just mash the snot out of the spring, as it's easier to crank the compressor with the spring still mounted than it is with the spring just loose later (ask me how I know).
If using Jeep spacers, drill the center out entirely. Try to keep it centered as you drill, as the front spacers may have trouble fitting in behind the steel lip on the front spring towers if you don't (ask me how I know). If you don't get it centered enough, a dremel/rotary tool with a sanding bit will fix you right up so they'll fit correctly (ask me how I know).
Remove the thin rubber pieces (coil isolators) from the coil tower. Slide your new spacers up, making sure they fit inside the lip. Put the stock coil isolator back on below the spacers.
Re-install springs. You will probably have to fiddle with the spring compressors a bit, and it really helps to have a friend to use his feet to simultaneously push down on the A-arm, while using his other foot to shove the spring into place.
Put the jack under the A-arm, and run it back up. Loosen and remove the spring compressors.
Use the jack to allign the holes of the strut mounts, and put the bolts back in, but DO NOT TIGHTEN YET!
With bolts in place, but not tight, lower the jack. Run the jack up at the end of the hub, which will tilt the rotor assembly ever so slightly in the right direction to correct for the camber problem. It worked out enough on my .75 inch spacers that the camber was within factory spec's because of this little trick right here. If you're using anything larger than .75 inch spacers, I don't think you'll be so lucky.
Tighen strut mount bolts.
Replace tires, and lower front.
If you want to do a strut mount flip, other people have documented this better than I can. I didn't do it on mine because the lift I did was pretty slight (doesn't appear to be any problem with the struts bottoming out a lot), and because I didn't necessiarly think more downtravel was a good thing for my CV joints.
Notes:
After the allignment (which is when I found out my camber was still within spec's, presumably from that micro-fudge I pulled when re-bolting the lower strut mounts), I ended up with the following amounts of lift:
1.35 inches in the front. (by using .75 inch Daystar spacers)
1.75 inches in the back. (by using 1.75 inch Daystar spacers)
My CV angles still look vaguely sane, and my 235/75/15's fit with room to spare. I have a little over 10 inches of clearance at the front crossmember, 11 inches at the frame in the front, and 12 inches at the frame in the rear. The ride seems unaffected in any way - it's just a little taller.
It took me 8 hours to try a bunch of junk that didn't work to learn all the stuff I've suggested above. Now that I know what I outlined above, it would take me about an hour and a half. I am a total moron with a wrench in my hand. If I can do it - you can do it!
Before and After pictures are coming, but it may be a while - my wife is out and about in the truck, so I can't take 'after' pictures, and we're getting ready to be gone for a few days.
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Here we go - pic's:
Before (already with 235/75/15's on it - I don't have any similar angles of it while it was still stock)

After (oh yeah, much better, eh!):

Some before and after by the tape measure at the front fender


Some more before and after by the tape measure of the frame

