Superstock Springs @#$%^&@#^%&

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The rear spring hangers you are using need to be swapped back to the original hangers. While you are doing that, wire brush, lubricate and loosen the u-bolts that hold the rearend to the leaf springs enough so that once your hangers are back in you can nudge the rearend towards the driver's side of the car.

The purpose of this is to shift any slack in the fitment of the springs and the rearend as far away from the passenger side of the car as it allows. Then retorque your u-bolts and re-check them a few times to ensure that they are maintaining the torque. If there was any play or movement there, it will be towards the direction you need the rear end to be.

I had the same issue on my E-Body due to running 325/50-15's on 10 inch rims. I also carefully ground about half of the fender lip off at the top of the wheel well lip using a wet cloth to avoid building up too much heat that might harm the paint. I blended the relieved area in to make the area I removed less noticable.

Cuda12.JPG
 
My car was dog tracking & it took me forever to figure it out. Not the same problem as yours, but the right rear wheel was about an inch farther back than the left. I x measured the chassis and it was all pretty square. Bodyperson on our forum figured it out. One of the spring front eyes had unrolled about a half turn on the right side. Pushed the spring back on the right. If you get under there and methodically start measuring (draw a diagram) you will figure it out.
 
Not sure, The guy I bought this from said the car was an all Original 1964 Dart with a 273 charger motor in it. Yea I know, Apparently it was HIghly modified from the dealer in the years following its birth. It does have a clean 8 3/4 with green bearings in it.
 
2 questions. Is this a 4 inch bolt pattern 8 3/4 and I can't tell what side of the vehicle for each wheel I'm looking at. Thanks.
 
First picture is passenger side, 5 on 4" pattern. Can this be adjusted in on the passenger side, with the green bearings ?
 
I tried nudging it once and almost knocked the car off of the Jack stands.




The rear spring hangers you are using need to be swapped back to the original hangers. While you are doing that, wire brush, lubricate and loosen the u-bolts that hold the rearend to the leaf springs enough so that once your hangers are back in you can nudge the rearend towards the driver's side of the car.

The purpose of this is to shift any slack in the fitment of the springs and the rearend as far away from the passenger side of the car as it allows. Then retorque your u-bolts and re-check them a few times to ensure that they are maintaining the torque. If there was any play or movement there, it will be towards the direction you need the rear end to be.

I had the same issue on my E-Body due to running 325/50-15's on 10 inch rims. I also carefully ground about half of the fender lip off at the top of the wheel well lip using a wet cloth to avoid building up too much heat that might harm the paint. I blended the relieved area in to make the area I removed less noticable.

View attachment 1715497736
 
Hi again. Every early dart I've ever owned was shifted over this way. Response #28 is dead on. Sometimes you have to grind a slot in the spring perches to shift it over to square it up. Scribe your location and find some thin washers put them in your marked location and weld them on or even a couple of tack welds are ok. Then if you need to trim the lips remember not to go all the way to make them flush as this will weakens the quarter panels. Hope this helps.
 
The car may not be square to start with. Factory quality control wasn’t around. The change in clearance is odd.
Double check the attaching parts to the spring again.
The S/S springs are designed to have that funny tilt for racing purposes.

ok, maybe 1.5" was a bit of an exaggeration, but it is off enough to cause a problem. View attachment 1715497572 View attachment 1715497573

Those Radial T/A's are a stiff sidewall. the picture looks like it has room. is it hitting?

if not...i had much less room that that with T/A's on my dart for years. (or at least what it looks like you have in the picture) i literally had maybe 1/8 of an inch. those sidewalls dont flex at ALL.

That is VERY common on these cars. I'm not sure where the variable is, but precision was not job one.


that looks like a normal case of tolerances stacking up against you

That way from the factory .

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My Swinger is the same as all have described above. I scrape my knuckles cleaning the tire on one side and can't even put my fingers through on the other. I have never measured but it is close probably 3/4" difference. Measure from the wheel opening to the tire in the front on each side to make sure it's not dog tracking.
 
ps Also when you're all done take it to a good alignment shop and they can tell if the rear end is straight (it probably is) and it will be worth it as they will have it all squared up. Before you take it there lube the *** out of the upper control arm nuts and you can put a wrench on them just to break them loose and tighten them back up. Just make sure your tie rods and idler arm looks good also as they will not align it if everything is loose. Idler arms are always a issue on these cars. And always burn them up and have some fun.
 
OK, if it is. can it be fixed. I could put offset hangers on one side, or I could move the perches?
 
Slot the holes on your spring perches and slide it over 1/4”.
Want there some sort of offset bushing or center bolt?
I though i saw something somewhere.
Or hole in perch oversized? And shifted..
 
The rear spring hangers you are using need to be swapped back to the original hangers. While you are doing that, wire brush, lubricate and loosen the u-bolts that hold the rearend to the leaf springs enough so that once your hangers are back in you can nudge the rearend towards the driver's side of the car.

The purpose of this is to shift any slack in the fitment of the springs and the rearend as far away from the passenger side of the car as it allows. Then retorque your u-bolts and re-check them a few times to ensure that they are maintaining the torque. If there was any play or movement there, it will be towards the direction you need the rear end to be.

I had the same issue on my E-Body due to running 325/50-15's on 10 inch rims. I also carefully ground about half of the fender lip off at the top of the wheel well lip using a wet cloth to avoid building up too much heat that might harm the paint. I blended the relieved area in to make the area I removed less noticable.

View attachment 1715497736
Just curious, but won't you have to make sure that the driveshaft isn't at an angle to the trans. from the rear?
 
Just curious, but won't you have to make sure that the driveshaft isn't at an angle to the trans. from the rear?
Yes move one thing and it can have a domino effect. It depends how extreme you want to get with it. Usually it's about a 1/4 inch or so and I really never had any bad vibs or anything by moving it this amount. Now if your running slicks and have 500 600 horses or so everything should be correct.
 
Yes move one thing and it can have a domino effect. It depends how extreme you want to get with it. Usually it's about a 1/4 inch or so and I really never had any bad vibs or anything by moving it this amount. Now if your running slicks and have 500 600 horses or so everything should be correct.
I agree, thanks
 
Yes move one thing and it can have a domino effect. It depends how extreme you want to get with it. Usually it's about a 1/4 inch or so and I really never had any bad vibs or anything by moving it this amount. Now if your running slicks and have 500 600 horses or so everything should be correct.
Frankly, moving it(the rear) towards the drivers side may actually correct it (driveshaft angle)because it may have been at an angle while the whole thing was shifted to the passenger side. It would be interesting to know the result.
 
Sounds good but I dont think there is enough play in the shackle to move the perch on top of the spring before I hit a ubolt.


Slot the holes on your spring perches and slide it over 1/4”.
Want there some sort of offset bushing or center bolt?
I though i saw something somewhere.
Or hole in perch oversized? And shifted..
 
The shift to the right is way less than any up and down movement that the rear end during normal driving.
So I doubt that is an issue

Frankly, moving it(the rear) towards the drivers side may actually correct it (driveshaft angle)because it may have been at an angle while the whole thing was shifted to the passenger side. It would be interesting to know the result.
 
The shift to the right is way less than any up and down movement that the rear end during normal driving.
So I doubt that is an issue
Probably not, but as you may know, moving a 1/4'' at one end could be 3/4'' 4 feet away and I'm referring to side movement. I'm just thinking out loud.
 
Looking at these 3 pictures of the passenger side springs. it appears that the lower springs are skewed oddley from the upper springs.

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