Cop Car Wider Rear Shackles with Super Stock Springs?

[76VRR318]

I acquired the following 76 roadrunner drag car a few years ago and have been making great progress on it. I went to replace the rear suspension components and found out the PO installed the wider cop Car shackles and mounts in the rear.

Car has b body 8 3/4 with b body Super stock spring and the perches have been moved so no need for offset shackles.

1. I'm trying to understand if there is any advantage to this wider shackle over stock width hangers for racing, performance, or with Super stock springs in particular?


2. My understanding is these wider shackle came with cars that had rear sway bars. So aren't they more helpful for road course use instead of street/strip? Even then do they really make a difference that's noticeable?

 

[M_Body_Coupe]

I was under the impression that the wider mount on the fleet cars simply provided more stability when it came to side-to-side movement. Ultimately you would feel this in any road situation where the body roll should be somewhat lessened. Partly for this reason the wider mount would be typically paired up with something like a rear sway bar so that the two components, which go hand-in-hand, would produce the desired outcome.

If you are going to use this vehicle for pure drag racing events you could easily sell the wider mounts to anyone here on our forum (interest is always there, myself included lol) and simply replace these with a straight-up setup.

It won't hurt anything to keep it on as-is though.

I can't comment on how much "butt-meter" difference these provide as I have the factory setup in my coupe with the large MP 1" rear sway bar...but make no mistake, yeah going from 3/4" to that 1" made a huge difference on the road!!! (we are talking sway bar diameter here though, which is a totally different thing though)

 

[76VRR318]

@M_Body_Coupe Thank you for all the info!! Much appreciated it. I realized what I had just recently and have been doing research regarding these shackles. Since I have them I'll probably keep them and just replace bushings. I possibly might have someone local that can make a batch of the cop shackles. If that works out I'll post a thread so everyone is aware. Thanks again!!