74 Duster front end too stiff

I took my car to Good year to have the front suspension redone, to my surprise shortly after i dropped it off they called me back to tell me all of the front suspension has all been replaced except for the upper control arm bushings.
So I had them replace those as well as install a set of Bilstein RCD shocks.
Here’s my dilemma when I go over a bump or a divot in the road it feels like there’s no suspension in the front end, if it’s a speed bump that is gradual the suspension works however the divots are like BAM horrible sounding and feeling, what is causing the front end too be so stiff and what Can I do to fix it please.
I have 225-60r 15 cooper radials up front

If there's an associated noise, you're bottoming out some part of the suspension.

A few things would be helpful to know- What torsion bars are you running? What are the alignment specs? Are the upper and lower control arms stock? How did you set your ride height? Do you have any bump stops installed?

And as always, a picture is worth a thousand words.

Bump stops installed, stock torsion bars for a 360, upper and lower control arms are stock, ride height was set to clear front tires.
As far as the alignment goes I couldn't tell you what they set it too, I don't think its bottoming out, its the sharp dips that its having issues with.

Steve Agrella said:

Bump stops installed, stock torsion bars for a 360, upper and lower control arms are stock, ride height was set to clear front tires.
As far as the alignment goes I couldn't tell you what they set it too, I don't think its bottoming out, its the sharp dips that its having issues with.

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More than likely your ride height is still lower than stock. Mine was when I was running 225/60/15’s on my Duster. Which means with stock torsion bars there’s a really good chance you are bottoming out. What’s the distance from the top of LCA bump stop to the frame at ride height? From the LCA to the frame?

With the factory wheel rate these cars are massively undersprung. Like almost half what an equivalent size modern car would be. The bump stops are used pretty frequently even at stock ride height with stock torsion bars. All you have to do to check is put a dab of grease on the top of the lower control arm bump stop and drive over the bumps you’re talking about. If there’s grease on the frame when you get back, viola, you’re bottoming out.

You also have a mismatch between your shocks and your torsion bars. The bilstein rcd’s, awesome as they are, were intended to be used with larger than factory torsion bars. That doesn’t mean they won’t work with factory bars, but you’re not getting what RCD intended for ride quality and handling performance.

And finally, you’d better figure out what your alignment specs are. Because usually big chain shops like that will only use factory specs. And since you’re running radial tires, you do not want factory specs. That won’t cause the problem you’re describing, but it will give you poor handling characteristics.

Thanks for the replies, good info to check

I have the same issue with my car. I know it's too low (especially for the crappy New England roads), this was a helpful post!