69 Charger 440 auto. Looking at the rear end, the passenger side is slightly lower than the driver's side. Leaf spring? Shock?

Springs, unless there is a structural or mount issue. Shock absorbers don't carry or support the load. They "absorb" the movements in the suspension to control and smooth things out.

You can compensate for that by cranking out the the torsion bar bolt to lower the left front . That will bring the right rear part of the car back up.

You need to find out what is causing that, does it still have the stock OEM leaf springs on it? If so they may have a broken leaf or they are worn out
Let us know what you find and do please

Don;t forget to check tire pressure. A low tire can cause this.

If the problem is sagging leaf springs (or wheel hop), the easy fix is to add one more long leaf to the spring assembly. That fixed my car about 40 years ago, and it is still fixed.

If the problem is the leaf spring, I recommend using leaf type helper springs like the ones from Hellwig. They are less than $100, are easy to install, last indefinitely, and can be adjusted side to side as well as overall height. I mount mine on top of the leaf springs so that they are not visible. They are all I use on my Mopars.

I thought that I would post a shot of the Hellwig leaf helpers that I use. I have used Hellwigs on a number of my Mopars over the years with good results. You can raise the rear several inches with them. And you can adjust the height side to side and adjust the weight balance if you want, too. I mount them over the spring rather than under so that they really can't be seen. It takes a minor modification to the rear U bracket, but it is minor. I have ran a best of 1.5 with these on this car, a '70 Cuda, and they have been on there now for about 6 years. Seem to be quality pieces. Just an FYI.

This is what I've found to be best compensator to even rear. I had a couple of leaf spring rear end Mopars years past that I let drive me nuts because walking up on the cars from rear you could see one end sat lower. I checked EVERYTHING. From tire pressure to leaf springs. I even went as far as switching the leafs (obviously on a car that they were identical left and right). Didn't change it. I tried adding an extra spring pad to the one side (OCD much lol). I also bought Firm Feels front mounts and mounted one side in the lower mount and the other in the upper mount. That had to have made at least a miniscule difference but probably not visible and BARELY measurable. One issue is that when you raise one side of the rear, the other side will come up too. Just take a yard stick and hold it to one side and have someone lift by hand the other side and you'll see.

I finally decided the best way was to mitigate it a bit with the front as suggested. Push the one rear side down a bit by lifting the opposite front corner up. Just a tad and find a good balance. I also got a lithium battery which removed about 40 pounds from my left front and definitely helped.

What is the part number of the hellwig helpers those are?

EZ 550

Thanks. What needed modified to fit above the springs?

The rear U clamp if you want to put it up side down so that it can't be seen.

In the Hellwig photo, looks like a piece of bar stock between the flat clamp-bar and top of the spring.
Seems that will prevent the "V" (leverage point) from spreading & losing its influence on the main leaf.
Pretty clever, and stealthy too...

If I understand your point, I just used the shank of a long bolt that I cut the head and threaded areas off of.

Never heard of Hellig helper springs. Glad I read this post. I have been putting off replacing the springs on my 68 Charger because they are probably worn out and sagging a bit. I love easy fixes!

Mike

Ever heard of Hijackers? If it where mine i would get new springs or find a place that can re arch the originals. Getting "helper" springs to fix sagging springs is just a bandaid for the original problem.

U.S. made Hellwig helper springs are not a band-aid. And they certainly are not the equivalent of air shocks. They are basically like adding an additional leaf. Just heavier and adjustable.

Many of us have had our half century old original springs re-arched only to have them sag back down. And what height they are actually re-arched to is a crap shoot. And many of the new springs suffer the same issues.

I have had new springs and have had original springs re-arched. I have not been happy with the results. You are kinda stuck with whatever height comes out of the box with no way to set the height or balance that you want.

The Hellwig helper springs solve all of those issues. Permanently. They also allow you to change the height should you change tires or just want a little different look. Try that with new or re-ached springs.

Less than $100, American made quality, adjustable, easy install, stealthy.............what's not to like?

While I don't remember the brand I used helper springs similar to the Hellwig product on my 1957 Plymouth Belvedere I drove in the sixties.

I would have to readjust them periodically because they would slip and lose the lift they provided.

Have to agree with Dave here - been there done that over the years - re-arching is a waste of money and time and Chinese new springs - just a matter of time and will sag lower than the worn out originals. I've had good experiences with helper springs too - and as Dave said, you can change height to your liking easily much much better than Hijackers and Chinese springs.