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9 Inch Rear
#1
Anyone off hand know the distance between spring perch's center to center on a 73 Mach. was getting ready to order new springs and i took a look under mine and noticed that the shackles are both leaning towards outside of car on both sides about an inch. wondering if rear was swapped??also have 5 leafs on mine not 4

[Image: 2zdx09d.png]
Yea,Tho i cruise through the valley of the shadow of rice,I will fear no Turbo,For Torque art with me.Thy rods and crankshaft,they comfort me. Big Grin Robert
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#2
According to my reference, the spring perch center to center distance is actually the same as the '64 - '70 Mustangs - - 43".

The difference would be in the flange to flange distance which is 56" on the '71 - '73 Mustang. The '67 - '70 Mustangs have a flange to flange distance of 54 1/2" while the '65 - '66 have a flange to flange distance of 52 1/4".

Hope this helps!

BT

Do the RIGHT thing.
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#3
cobra3073;22521 Wrote:According to my reference, the spring perch center to center distance is actually the same as the '64 - '70 Mustangs - - 43".

The difference would be in the flange to flange distance which is 56" on the '71 - '73 Mustang. The '67 - '70 Mustangs have a flange to flange distance of 54 1/2" while the '65 - '66 have a flange to flange distance of 52 1/4".

Hope this helps!

BT
did a quick measurement and came out to roughly 45 center to center on the perch's. The main reason i am wondering is these pics drivers side passenger side leans out also [Image: 33trx1f.jpg] and this [Image: kz4bb.jpg] both sides are laying over to the outside of car any ideas????

[Image: 2zdx09d.png]
Yea,Tho i cruise through the valley of the shadow of rice,I will fear no Turbo,For Torque art with me.Thy rods and crankshaft,they comfort me. Big Grin Robert
  Reply
#4
If the flange to flange distance is something other than 56", I would suggest that the entire rearend was possibly swapped out with something other than one from a '71 - '73 Mustang.

Hope this helps!

BT

Do the RIGHT thing.
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#5
rough measurement flange to flange is around 56" give or take a 1/2" but my measurement probably isn't right i just measured from back of axle ( end of tube )

[Image: 2zdx09d.png]
Yea,Tho i cruise through the valley of the shadow of rice,I will fear no Turbo,For Torque art with me.Thy rods and crankshaft,they comfort me. Big Grin Robert
  Reply
#6
some one could of added a extra leaf to it too...these years of stangs love to sag in the arse over time..lol...some one put old school shackles on mine to lift its arse up a bit.
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#7
hyena429;22583 Wrote:some one could of added a extra leaf to it too...these years of stangs love to sag in the arse over time..lol...some one put old school shackles on mine to lift its arse up a bit.

that is possible PO also put air shocks on it, just the way the shackles are layed over really bugs me. I have been guilty of using longer shackles in my earlier years to raise one up Big Grin

[Image: 2zdx09d.png]
Yea,Tho i cruise through the valley of the shadow of rice,I will fear no Turbo,For Torque art with me.Thy rods and crankshaft,they comfort me. Big Grin Robert
  Reply
#8
yup..the old 1980 classic air shock upgrades.. seen plenty of them on mustangs and camaro's over there years..specialy on camaro's..lol..ya i wouldnt dout if some one played with it a bit threw the years...mine has big old shackles on it..been on there sence i was a kiddy in highschool..lol...here is a pick of the rear of my car...you can see the shackle sticking out the back...still handles good though..lol
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#9
Nice Mustang

[Image: 2zdx09d.png]
Yea,Tho i cruise through the valley of the shadow of rice,I will fear no Turbo,For Torque art with me.Thy rods and crankshaft,they comfort me. Big Grin Robert
  Reply
#10
thanks!! first car i ever owned...glad i never had the heart to part with her Smile
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