Pinion snubber instead of HD leaf springs?

Before I buy my 3rd drive shaft, I want to address the real problem. My 74 B body 440/4sp seems to have a lot of axel wrap during launches and hard shifts. Would an adjustable pinion snubber be a good option instead of stiffer leaf springs? Otherwise the factory springs ride well.

i would try a cheap set of slapper bars before i would monkey around with a pinion snubber.

This has been discussed a lot over the years. IMO a pinion snubber or traction bars are a band-aid fix. The real issue is the springs.

Do you have the front of the spring pack clamped?

https://board.moparts.org/ubbthreads/ubbt...on-snubber.html

Have you checked your setup for the correct pinion angle at any time?

The front section of the spring controls wrap, the rear is more of the rate & ride quality. A 440/4speed should at least have the "XHD" (aka "Hemi") rear springs. Clamping the front segment in a couple places works even with slicks. If you don't get separation (springs driving tires down during launch), then the taller snubber will limit rotation of the axle, but it's the springs' ft section that should be addressed. On my drag car that does get a lot of separation the snubber did nothing and I don't run one on that car. It uses modified SS springs & clamped ft sections.

Don't the 1973 or 1974 and later B body use different length and different mounting on the leaf springs than the pre 1973? If so as you have already discovered the leaf springs, non HD, don't work for what you want them to do The snubber can't fix the springs
Buy the best springs you can get for what you want them to do

Topside's info is interesting. I don't run at the track (no roll bar), but I have SS springs, clamped in the front (3 clamps each side) and my pinion snubber hits the floorboard hard....hard enough that I bought one of those hemi pinion snubber reinforcement plates since I was ripping my floorboard.

In my limited experience, both pinion snubbers and slapper bars worked effectively, but I was mainly trying to prevent wheel hop.

You didn't say if this was a street or track car. But, back in the 70s when we didn't have many choices and less information, we always used snubbers. Mostly to save the rear U-joints.

They did that job, but you had to have the snubber fairly close to the body in order for it to do it's job. And man, did the car ride rough like that.

And yes, the floor needed re-enforced at the point of contact.

I would eliminate that Isomount crap the 73 and up B's had. https://board.moparts.org/ubbthreads/ubbt...-isolators.html https://board.moparts.org/ubbthreads/ubbthreads.php/topics/295652/1.html

Yes, if the stock isolators are tired they'd contribute to the axle wind up.. As already stated if the pinion angle at rest is off it too could leave the axle wrap up too far under load...I ended up cutting the iso axle perches off,welding the earlier style on the housing and adding super stock springs on the 73 RR...Problem solved,no adjustable snubber..

This is the answer to your problem. You need a stronger front segment.

Here are a few reasons to avoid the other solutions:

Clamping springs takes away their ability to slide against each other. Without the slide, there will be a bind. If by chance there is enough action to force them to slide, they will not slide back. So the spring will have a memory, compress and the will not fully decompress. The car will not return to the original ride height.

Pinion snubbers. While they will stop the nose of the differential from rising. They will also stop any suspension travel. This was probably designed by the same engineer that gave us negative caster and ammeters in the dashboard.

Been there,,,done that.Went with Cal traks and adjustable shocks with great results!

My pinion angle is ok and I'm not on the track or running sticky tires. I do have the iso-rubber rear leaf springs. From everyone's advice, it looks like my best option is to switch over to the '71 style springs and learn about spring clamping,
Insted of changing the spring perches, can't I just fab up Ann adaptor for the centering pin on the spring perch?

there is Poly spring isolator option... the best of both worlds

https://www.ebay.com/itm/Energy-Suspensi...yMAAOSwuHdaZfy7

if you are not to race... why sacrifice that and make all those changes. Just replace rubbers for poly, and done.

then, I'm agreed, extra leaf on the stock ones, and one more half leaf to the front

I'll be working on that. Although won't change to poly. I like the comfort features. My car got performance upgrades but still a street car.

Yes, The pinnion snubber is kinda harsh on a street car ( I have it )

I think its time to focus on the car useage. Why remove all the comfort features when is not really needed ? just because ppl keeps saying is a [censored] ? enjoy the car on the way it is, just upgrading some stuff for "better" handling doesn't require change all its parts and advantages. The parts for upgrades are available on the stock setups

Springs should be designed to launch the car.

The snubber is a safety device in case the front spring segment allows too much wrap up, breaking the U-joint. It should not be set to hit, if possible.