dave ellis
Well-Known Member
Have heard of offset shackles being used on the rear leaf spring eyelets. Is this an advisable mod for a street driven car?
Offset shackles
- Thread starter dave ellis
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charger426
Well-Known Member
Have you ever heard of google? Prob 100+ threads on this subject on this site alone. Loads doing it, you will have to move your spring perches inboard as well so that mean welding. Not an issue for most but is for others.
dave ellis
Well-Known Member
You can look on Google and it will find answers on this site? Did not know that. Thanks
dave ellis
Well-Known Member
That's exactly what I needed to know. Thank you, Dave
charger426
Well-Known Member
Where have you heard that? Several on here doing full autocross and road course racing with offset shackles.
I heard it's too much trouble without moving the perches in also and it only gives you a half inch in the end....they were telling me it binded the geometry of the angle of the springs without moving perches also and they also said it wasn't worth the extra .5 clearance....I'm only repeating what 2 different racers told me
Those who may have "heard" rather than "done" it, may be incorrect. I've done it, and it is 1/2" per side, not 3/4".
That said, not hard to do, huge benefit, and if people really think springs 1/2" inboard will cause stability issues, well I don't know what to say. 1/2" more clearance in the wheelwell of a 67-69 Dart is absolutely huge.
Do it!
That said, not hard to do, huge benefit, and if people really think springs 1/2" inboard will cause stability issues, well I don't know what to say. 1/2" more clearance in the wheelwell of a 67-69 Dart is absolutely huge.
Do it!
Agree I have no use speaking for people that are throwing mixed advice to me.. and I have also thought about doing it myself but have had too many roadblocks from others bad advice....absolutely a Dart can use any room they can get with a closed wheelwell. ..
Remind me tomorrow to get you pics
Professor Fate
Push the button, Max...
Wow- so much misinformation, all in one thread...
It's advertised as a 3/4" gain per side, but in actuality you get about 1/2".
And it's not just shackles, you need the offset front spring hangers, too.
And any time your move the hangers, you'll need to move the perches, too.
No wonder your "racers" think the rear end binds...
It's advertised as a 3/4" gain per side, but in actuality you get about 1/2".
And it's not just shackles, you need the offset front spring hangers, too.
And any time your move the hangers, you'll need to move the perches, too.
No wonder your "racers" think the rear end binds...
I have them on my 67’ barracuda, I was in the process of adding a 8.8 rear end so it made sense to do it cause I had to weld leaf perches on anyway. No regrets gives you the necessary clearance when adding wider wheels and tires.
Yes, it requires hangers, shackles, and cutting and re-welding of the perches.
We have put 1000s of miles on them in many of our A Bodies.
Never an issue!
Never an issue!
This mod puts the springs even with the inner wheel house. You must use the offset front hangers plus the shackles and move the perches inward for them to fit and work correctly
doug 371
Well-Known Member
The mopar kit will put the leafs in a bind because the front is 1/2" and the rear is 9/16. Not a problem with rubber bushings but the aluminum front bushings wont work. The dr diff set up moves them 1/2 evenly and will not have that problem. That being said, I have the mopar kit on my 69 dart and they did what I needed them to
Here’s a few reference photos.
I didn’t use those perches because the locating pin hole was too big. Moroso has the correct ones.
doug 371
Well-Known Member
Is that the dr diff kit?
Yes Dr diff kit
Sorry thread dig, i have a 8 3/4 we are shortening and using the off set shackles on, do you move the purch exactly half an inch from original location on diff? I am using the dr diff set. As my car is in a shop and diff being built elsewhere so cant mock it up
Yes, a half inch in each side. We did mine last weekend.
Yes thanks as wasnt 100% if was that exactly and dr diff also said:
Turn the housing UPSIDE DOWN on jack stands.
2. Place a floor jack under the pinion. Use an angle finder to point the pinion 5 degrees downward (toward the ground).
3. Level the perches at 43" and weld. This will result in a 2 degree negative pinion angle when the housing is installed in a stock A-body with my 1/2" offset spring hanger/shackle kit"
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