springs/leaf springs, which ones iyo?

I just got some stock height, 4.5 leaf rear springs and they made a pretty surprsing difference. They go very well with my KYB Gas a Justs.

I like the stock ride height in the rear, my front springs are getting a little old and have a tiny bit of sag, so theres actually a decent rake and I think it looks pretty good personally. I might replace the stock front springs with stock height, but stiffer springs at some point and peform the shelby drop, or just get some drop springs so it retains the rake but stays a little high in the rear.

Springs and spring rate are a matter of choice based on your driving style/needs. I just installed 5 Leaf mideye springs for the rear along with midolyne bushings and heavy-duty shackles. With the higher rate springs I opted to go with a little more forgiving shock- edelbrock IAS. Rear is lowered about an inch over stock with the mideyes. Should I have gone with 4 1/2 leaf springs instead? For an aggressive daily driver/occasional trip to the track car- hard to say.

The front springs have just been ordered (Pro-Motorsports Progressive Rate) and while a little more expensive, I'm hoping for some real improvement. They do not result in any drop, however, I am planning on doing a drop with their Negative wedge kit(1.5in.). The rest of the front has new midolyne bushings. Good luck.

I have 1" dro 620s in the front, and 4.5 leaf mid-eyes in the rear. This gives it the factory stance, which is nose-high, which I don't like. I just lowered the front another inch with Global West negative roll UCAs. I don't have everything dialed in yet because I'm in the process of installing Baer discs all around, so I can't tell if the front has been lowered 'enough.'

I drove the car for awhile with those springs, though, and the handling was VERY much improved, even with the nose high stance and lots of positive camber. Stiff, but not harsh...unless you're going over broken pavement or a railroad crossing.

EDIT: my spring setup gives the factory stance, but 1" lower all around.

65fastback2+2 said:

well since im redoing the suspension im doing the shelby drop in the front, so what would some of ya'll suggest I get then as far as the springs/leaf springs? I have 245/60R14 rear tires, just to give you an idea of how much the rear can drop.

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I'd get the 620# 1" drop springs up front & the 4.5 leaf mideyes in the rear. With the additional lowering from the Shelby drop, your car should sit level or slightly nose low.

I have 5 leaf mid eyes from M+ and heavy duty prothane shackles. The drop is perfect imo and the ride isn't nearly as stiff as I thought it would be. I'm glad I didn't go with 4 or 4 1/2 leaf springs.

There’s a slight rake towards the rear with these springs, but I have yet to do my front suspension. I have 1" drop springs from GW and their tubular UCA/LCA + adjustable strut rods. They’ve been sitting in the house for 8 months along with the rest of my front end stuff. Can’t find the time to do it

The modern restomodders seems to like the slighly lowered look with 17" wheels. My preference is stock height rear with slighly lowered front. To each, his own. My combo is this: rear - standard eye 4.5 leafs (M+) 24550R16 tires, front - shelby drop with 600# (scott drake) springs at stock height, 22550R16 tires.

The front was high last weekend after I did the spring, shock and new UCA swap, but is has settled down just over .5" so far and I'm probably fine with it. The rear is perfect height and stiffness for me. Comfort is more important to me than stiffness most of the time. I like the overall look especially with the 50 series tires, kind of retro hotrod. I did not want to lower the rear at all because the height varies with a full tank of gas and if I had passengers in the back seat, rubbing might be an issue. My other factor is my wheels with 4.5" backspacing, the tires are close to the fenderwell lips which I did not want to cut or modify. 4.75" seems to be the ideal backspacing for the 67 but of course my wheels are not offered with that backspacing.

Basically comes down to personal preference but you have to consider your overall plan with your car and accessories like brake rotor size, wheeels/tires (backspacing is critical when you push the size/lowering envelope) combo, comfort, performance suspension or combo (4.5 leafs).

It's all about what you want. Thankfully with our cars, aftermarket parts and a little labor the Mustang can be built to any specification or preference.