FWIW...I'm on my second pair of mono leaf springs on my cuda. Bent the first set a few years back. Some of you may remember a member here by the handle "TheOtherDodge" who had a badass red '73 challenger, 499" big block on nitrous running low 9s. He bent springs on his w/ Cal-Tracs if I recall correctly before he switched to ladder bars.

I'd think that adding a short leaf section where the CalTrac link pushes down on the spring would add enough stiffness in that high-load area to help resist that bending problem.

On my other car I run Assassin bars with the SRC spring perches and Calvert Split Mono Leafs. The extra adjustments are nice but honestly I've never moved them since setting it up. The only thing I adjust is preload to keep the car going straight. I've been fast with them. Really fast.

Agreed. I used to clamp flat stock to the rear leaf segment of my car to keep the springs from bending. Took the clamps off for street driving and immediatley bent the longest spring forward of the rear hanger. 4 speeds are hard on stock springs!

Now that I think of it...when mine bent, it was the rear half on the driver's side that bent...not the front section.

Is that part of what rear spring mount sliders are designed to help with?

I don't see how that sort of issue would be any different between CalTracs and Assassin bars, but I can see how bending the spring behind the front eye could result from CalTracs.

I'm not sure about sliders helping w/ it or not? It definitely wouldn't be any different b/t the two styles of bars as far as bending the rear halves.
Looking at the two designs, I don't really see how the Assassin bars would be any less prone to bending the front half of the spring?

Maybe more so, IIRC you have to drill a hole in the leaf to mount the front pivot bracket with the Smiths stuff. .

I wasn't a great Physics student, but I'd a$$ume how the Assassin bar bracket clamps to the front leaf behind the spring eye distributes the load across a wider area of the leaf spring than the CalTrac "bolt" that pushes down in more of a point-loaded fashion. That's why I mentioned that a short leaf section clamped in that same area for a CalTracs-equipped car could help achieve the same thing.

Ya the bracket distributes the pressure across a wider area.

Just talked to Digby. They have never bent to a set of springs. The have only broken the lockdown bolt. That's well over a 2000 pony combo..

Well there you go, I trust what they say !!!!

And I would bet that it spins before it hooks up a dead hook applies more torque

it's a ET street drag radial tire.. It better dead hook or your fooked.

You HAVE to dead hook a radial. Once they spin, it's done.

Wow, this thread really took off, and became a sales ad and critique of how great Cal-tracs are! Lol. Thanks to all that answered my questions. I have my Assassin bars and should be installing them tomorrow. I'll see how they like the springs that are on it before I jump to a monoleaf setup.