Rear Spring

Copestang

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i been trying to find some rear spring for my fastback, but don't seem to be any, I do have leaf spring and coil spring in the rear.

 

Hemikiller

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Rear leaf springs are available from any Mustang supplier. Eaton spring supplies the most accurate reproductions, but they are more expensive than a standard style replacement. Since you have a '73 Mach, you have competition suspension, which utilized a 138 lb/in rear leaf. I've used the 71 429CJ spring in several cars with excellent success.

http://www.mustangsunlimited.com/Mustang/Suspension/Leaf-Springs/Leaf-Springs/Rear-Leaf-Spring-1971-Mustang-V8-Coupe-Fastback.axd

I also recommend you replace your u-bolts and rear shocks at the same time.

 

Copestang

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I have new leaf spring, I’m looking for spring that sit on the rear end

 

Don C

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That's not original. Looks like a J.C.Whitney overload, add-on, special.

With the correct leaf springs you'll be able to throw them away.

 
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Hemikiller

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Holy crap! overload springs AND air shocks! Did the PO use your car as a dump truck?

Throw all that crap away and get a proper shock. You're missing the axle bumper int he bracket.

 

Copestang

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So the air shocks is not the way to go, I was about to order a replacement

 

Don C

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With the correct springs you won't need them. Hard telling what they were carrying that needed that extra weight capacity, but if it were me, I would check every nook and cranny, especially the drop-offs in the trunk, for leftover contraband.

 

Copestang

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Ok I’ll get rid of the air shock and spring and check on a axle bumper case

 

OzCoupe72

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Also check your upper shock mounts aren't cracked, air shocks tend to crack them when jacked up

 

Copestang

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Also check your upper shock mounts aren't cracked, air shocks tend to crack them when jacked up
I’ll check i

That in the morning thanks

 

Bill73Ragtop

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Back in the 60's / 70's in the rust-belt northern region it was common to load up the trunk with additional weight to (hopefully) improve traction on the snow and ice during winter months (those darn poly tires!)....PO must have loaded up several hundred pound of pig iron from the steel mills to need those kind of extra springs and air shocks.

 

bkdunha

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Another possibility is running over sized tires sticking out beyond the quarter back in the 70's. Could have used all of that suspension to get the back end up high enough for that. Either way, as all have indicated that is all added on stuff and needs to go if you want original. Also keep in mind, visually from the factory all of the fastbacks sat a little low in the rear compared to the front. A heavier weighted leaf will help level it out more. If you have the chance look at one of our cars going down the highway at speed front ends always look high compared to the back. Just air pressure on the front and stance in the back.

 
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