Shackle bolt diameter difference?

[fshd4it]

I've finally worked my way to the rear of my '74 Duster. New springs, but used shackles and rear bushings for the moment. Looks like I need some that measure 7/8" o.d. x 1/2" i.d. However, I was going through my pile of parts and found a shackle (other one's probably around here someplace) with 9/16" bolts/pins. Same diameter as my B/E stuff, but shorter "height" like the A body shackles I have. Any chance these were for an A body? Probably play hell trying to find bushings for them with the 7/8" o.d. spring eyes...

 

[cudamark]

You should be able to find the correct shackles. Run an ad in the parts wanted section. The shackle bushings are cheap, I'd just get a new set. Post a photo of the shackles you have now, along with the measurements. Maybe someone will want to do a swap.

 

[fshd4it]

Yes, the 1/2" shackles will definitely be the way I'll go. I only need one, as somebody broke the threads off and welded the bloody stump to the side plate on it. If/when I find the match for this oddball(?) shackle, I'll see if there's anybody who has a use for them. Were the rear spring eyes normally 7/8"? The 3 pairs I've had/have all are, but most suppliers I find seem to think 1" o.d. is correct... while listing the i.d. as 1/2"?

 

[SGBARRACUDA]

I have A body shackles. If you post a picture and measurements I’ll compare
Them to mine.

 

[cudamark]

My springs have 1" I.D. eyes for the shackle bushings.

 

[fshd4it]

My springs have 1" I.D. eyes for the shackle bushings.

Thanks, good to know. I'll take mine back apart and measure again, make sure of the eye diameter before I order bushings. Too many projects going on right now to be positive about anything.

 

[fshd4it]

I have A body shackles. If you post a picture and measurements I’ll compare
Them to mine.

Thanks Roy. The 9/16" pin ones measure 3.5" center-center, just like the 1/2" set. The B/E shackles I have (that came from either my Belvedere or my Challenger) are 9/16", but with a 4" spread. Looks like they're all for 2.5" springs. I'll try and get some pictures tomorrow.

 

[RustyRatRod]

MOOG K-7309.

 

[fshd4it]

MOOG K-7309.

Yes, those are the 1/2" x 1" bushings. However, I was just on General Springs' website, and according to them the bushings I need are # HB891, which (by the description I found on another site) are 1/2" x 7/8". I've got to pull this stuff apart and make sure exactly what I have here.

 

[SGBARRACUDA]

I have some old rubber bushings I’ll measure too.

 

[fshd4it]

I have 2 spare sets of shackle brackets (part that mounts to the frame) which measure at 7/8". I'm pretty sure both came from 7 1/4" cars. My Duster was originally a /6, probably a 7 1/4" as well. I'm wondering if there's a correlation between bushing size and type of third member.

 

[SGBARRACUDA]

No the rear shackles on 7 1/4, 8 1/4, 8 3/4 are the same.

 

[fshd4it]

That would make sense, I've only seen one type under B/E's as well. So back to the shackles with the larger pins... my '64 Barracuda had a spring relocation kit installed at some point. I'm pretty certain these shackles came with the car, maybe that was the style included in the kit.

 

[SGBARRACUDA]

A body shackle measurements.

 

[RustyRatRod]

Yes, those are the 1/2" x 1" bushings. However, I was just on General Springs' website, and according to them the bushings I need are # HB891, which (by the description I found on another site) are 1/2" x 7/8". I've got to pull this stuff apart and make sure exactly what I have here.

ok.

 

[RustyRatRod]

Yes, those are the 1/2" x 1" bushings. However, I was just on General Springs' website, and according to them the bushings I need are # HB891, which (by the description I found on another site) are 1/2" x 7/8". I've got to pull this stuff apart and make sure exactly what I have here.

When I tell you something, I'm not blowin it outta my ***. I have two sets IN FRONT OF ME. The printed specs for the MOOG bushings are WRONG. They are 1/2 x 7/8. See the photo. It's a bad picture, sorry, but it's measuring .874. Probably cause it's a little cool today. You use whatever you want to use, but the MOOG number is correct.

 

[fshd4it]

Thanks, guys, for the photos and measurements. I have a few 1/2"×1" bushings, I found the k7309 specs on line, believed it to be correct, and figured that's what they were. We used the dodge p/n (1940725), and the hb891 number at the local CarQuest today, and it crossed to k7309. Of course, they didn't have any on the shelf to measure, and I didn't want them to order me parts that may not have been correct. Thanks for the verification. On another note, I picked up another 1/2" style shackle from my buddy, and he just happened to have a spring relocation kit, in the box, he bought years ago. The shackles had 9/16" pins, at 3 1/2" on center. I think I know where mine came from now.