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Anyone here use Sulastic Shackles?

y5mgisi

y5mgisi

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Looks interesting. And i have read some good reviews. They are a bolt in shackle replacement but are $380 bucks.

http://www.sulastic.com/sa-01?make=CHEVROLET&model=SUBURBAN&year=1986&motor=

0000189_sa-01_300.png
 
Never used em, but sure looks interesting.

I would have to hear from 4x4 owners before I could pull that trigger though. I would worry about how well they would hold up with the suspension routinely flexed out. Also on the front, I would worry about it acting like a long shackle and causing drifty road manners and steering.

But on the ingenuity scale, I give 'em a :waytogo:.

.
 
there used to be some thing like that before that had theword firestone or good year molded into the rubber. it was supposed to be like what semi`s used.if i remember right my friend bob bought some and didn`t see much of a noticeable improvement. He put them on a 3/4 ton extra cab dodge to try and get rid of the bounce he was getting going over the expansion strips on the freeways around here.that thing rode like a horse and buggy.
 
They look like "revolver" shackles which have been around for a while (mostly used on smaller 4x4's). Iirc they work ok but allow the suspension to unload if going downhill or sideways on a slope.
 
About ten years ago, I put a set of the Goodyear(?) ones on the back of my buddies lowered 2000ish C3500 Dually, crew cab. When it was unloaded it would bounce around a lot and this cured it.

I can't imagine it making a difference on a K5, burb or loaded truck, but in my buddies case, it was rarely loaded.
 
The site and a youtube video or two are fairly convincing. My 78 has virtually no give in the rear suspension. My plan with it was a set of 56" half ton springs with air bags for when I load it. But if these will give me the ride I want for a ton less work I would be quite interested.
 
Yeah, I assumed they were like revolvers too until I saw the vid on the website. I'm not sure I have a $400 need for them, but I'd be very interested to hear how they do.
 
During my Google searching I found they are very popular with the late model Cummins and super dutys and people have great things to say about them.
 
Firesone made something similar years ago. Thy worked great I think these would work too
 
Looks like a step backwards to me. We spend all this time and money swapping in poly bushings that don't wear out and then add this big hunk of rubber spring isolator?

I say save your $400 and put it towards some deaver/alcan springs and good shocks if you want a nicer ride.:dunno:
 
big dan said:
Looks like a step backwards to me. We spend all this time and money swapping in poly bushings that don't wear out and then add this big hunk of rubber spring isolator?

I say save your $400 and put it towards some deaver/alcan springs and good shocks if you want a nicer ride.:dunno:
Click to expand...

I couldn't agree more, especially if you are loading your truck.

My 1/2 ton Suburban has Pro-Comp 56" springs and Bilstein 5100's in the rear. The ride is smooth enough, and although I don't treat it like a 3/4 ton or larger truck... we have loaded it with around 1,000 lbs of firewood on occasion & other heavy stuff. I've always been surprised that it really doesn't sag much at all with the load, and still rides pretty well. Especially since those springs are Pro-Comp!

And remember too, damping damping damping. When I was an RV mechanic, all too often trucks that rode well unloaded came in (cough Chevy cough) and would get full treatment to airbags & a 5th wheel hitch. The owners would complain about a bouncy ride when the trailer was hitched up & the airbags pumped to remove sag. Well... of course! The stock shocks were designed to give a good ride with the stock springs. There's a balancing act between the springs and shocks to give you the ride you desire.

Clay
 
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