Anyone remember these vintage traction bars ?

318willrun said
As far as traction bars not working on a "Mopar" is just plain hogwash. It's where if something is said enough times, it becomes true.

If put on correctly, when you take off (flooring the car) the traction bars use axle twist (yes, the axle twist on a mopar like any other car, it's why they made adjustable pinion snubbers) to apply pressure to both back tires evenly. The back of the car will now raise up at least 2 inches (maybe more) because of the downward thrust of pressure being applied to the rear tires. I always figured it's the same as adding about 200 lbs right over the axle without adding the 200 lbs. I've found them especially useful with "open" rear ends. I've done "before and after" test on many cars, so I let the results speak for me. :)

If you think about it, the pinion snubber is just a single center-mount slapper bar. Chrysler leaf springs have significantly less axle twist than the symmetric leaf springs used on Brand X cars, but it's not zero either.

I've thought about making a set of slapper bars lined up specifically to work with A-body leaf springs and putting little stickers on it reading "Ha ha, I put traction bars on a Mopar!" on them.

Now, linkage-type traction bars with both the front and rear mounted in a bushing are a bad idea on Mopars. These will work if the front half of your leaf spring is way too flexible, but they bind up when used with Mopar spring designs.