Steve has this one figured out. The Moog catalog lists the 1979-on Fox body springs as 4.01", and the Aerostar at 4.07", I think. And there's a ton of different spacers for the Mustangs. Summit lists a bunch of them. Remember, 1/2" change at the spring will be a bit more for the car as a whole. Summit shows some of this, but I don't know how it applies to our mixed applications. I've had the Aerostar springs in for years, and I love them.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

The progressive springs have the coils wound in such a way as to get stiffer as they collapse. So at relatively minor compression, they feel like the original springs - but as they approach the bump stops, the "spring-rate" goes up. When the spring is out lying on the garage floor, you can see that the coils start at one spacing and slowly change to another.

The spring is roughly halfway out the swing arm from pivot to the tire - so a half inch up or down at the spring is more like an inch or two of body movement.

 
 Steve Metzger       Tucson, Arizona

If a 1/2" spacer would raise the cars body 1-2" that would be perfect. I talked to Dave at Drop em N Stop em and he told me the Versailles spindles would lower my car 1 1/2. So with the Aerostar springs and a 1/2" spacer that should put me at my 3" drop I am looking for. Right?

Durham Missouri

In my case, I am dealing with a wide tire and fender clearance on turning, especially on bumps, driveways. I have 7 inch/3.75 inch backspace Torque Thrust D's with 225/60 15 Michelin Pilots. I would have to change wheels and/or tires to make lowering any further practical. BigWindow62, the Aerostar springs are gathering dust in the garage. They're yours for the cost of shipping if you want them. Don't remember your location and the springs aren't very expensive, I think they were about 90 bucks when I bought them.

57 Black Tbird 312/auto

Pm sent. Thanks!

Durham Missouri

Not hijack the thread, but, if I want to lower the front of my 55CV, the Aerostar springs are a good choice? How much will they lower it? I will be keeping the stock size tires and wheels on the front. Going to use a 15" slightly wider tire and wheel combo on the back.thanks guys, Rowen

Rowen
55CV
Woodland, Ca

Everything I've read indicates the Aerostar springs drop a 50's Ford about 3". -Dave

That would be perfect!! I have all new front end parts so it looks like I have a good weekend ahead of me next month. No fender well interference from the tires with this set up? Rowen

Rowen
55CV
Woodland, Ca

Oh, and what year springs? Are they all the same?

Rowen
55CV
Woodland, Ca

If you search Aerostar here, some info will come up. This is an old but good post, with some pictures and part numbers here

http://www.jalopyjournal.com/forum/threads/cheap-and-great-alternative-coil-springs-49-thru-59-ford-and-merc.260795/



miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ