which leaf springs?

[Wicked72]

Looking at the mopar performance leaf springs at summit. price is good and shipping even better. not sure which ones to get or if theres any major benefit between the original equip and the competition springs. car will be mainly street driven and will be hammered on. planning on caltracs eventually .any suggestions?

http://www.summitracing.com/parts/dcc-4452982

http://www.summitracing.com/parts/dcc-4120863

[green69rt]

The add says for 71 and earlier.   Will it fit your 72 or are you looking for another car?  In any case the first one looks like the same as the 440/hemi leaf spring.   PLenty good for the street unless you want you car to ride like a truck.   No personal experience with summit springs but my old 69 440 had the hemi springs and they were plenty stout.

[cdr]

if you are going with caltracs,they work MUCH better with their springs

[Wicked72]

good to know

[Wicked72]

i see they have split mono leafs not really feeling the safety factor

[dangina]

says the springs are rated for 28000lbs isn't that alittle too light for the street?

[FLG]

Nothing wrong with the mono leafs, plenty of guys running em.

[cdr]

call & talk to them,THEY KNOW WHAT THEY ARE DOING.  if you are going to put multi leafs on ,might as well use cheap slapper bars 

[HPP]

What constitutes a street hammering? Drag racing, corner burning, autocrossing, combo of above?

Split mono leafs are no less safe than a full length spring. They actually allow seperate tuning of front and rear segment and with the geometry of the cal-trac, are a good compliment to their system and are lighter weight to offset the weight of the cal-trac. However, not sure why you would need a cal-trac for a street car. You'll be traction challenged regardless.

I believe, but aren't positive, the '72 have the isolated bushings, so the regular springs shown above may not be a direct bolt in and may require new shock plates and shocks to work.

The competition springs shown above may require the same mods as the replacement stock style springs as well as a new front hangers because they are two inches shorter than the origianl springs.

[FLG]

73' started the isolated bushings.

[resq302]

Just an FYI, the Mopar Performance springs have had a lot of issues (at least back 6 years ago) with metalurgy issues.  The Mopar Perf. HD springs (hemi springs) that I got sagged after two years to the point where the curved shape of the spring now looks more like a w intsead of a u.  I would go with either Eaton Springs or Espo if you are looking for a stock type look.  The only difference is that those companies would not have the part number stamped into the bottom spring.  Or,  you could always send yours out to a spring place that could re-arch them.

[Wicked72]

as for right now the car will be stock. however im in the slow process for gathering parts for a supercharged stroker so i want the rear to be a little stronger i wont be running slicks just an over powered street car is what it will be. i figured the caltracs would give me some added strength.  where could i get some good springs at that price like the mopar performance?

[resq302]

Id double check with the places I mentioned.  You could also look and see if there are any spring places locally that could re arch them for you or have them add a leaf.

[FLG]

I still dont understand whats wrong with the mono leafs? Theres 800hp hemi's running on the street and track that have no issues whatsoever.

[Wicked72]

reading this


http://www.eatonsprings.com/monoleaf.htm

Wish it was a simple as a rearch
I was originally going with a complete Reilly Motor Sports suspension and sold alot of stuff off the car. was going with a dana rear etc but then life happened and job went south after getting married buying two new cars and what ever else could come our way I had to use every bit of the money I had saved for the charger to pay off a ton of stuff so life would be easier and we could catch up comfortably.

[FLG]

Caltrac's use split mono leafs, im not sure if that makes a difference or not.

I couldnt find any posts on caltrac mono leafs failing. Maybe give em a call and see what they say?

[Wicked72]

Thats what Ill do. I wish i could just find a stock set to throw on. I may just get the MP ones for now till they sag and upgrade when I get the money. I hate having to be cheap on everything but I really do not have any other option since my car is just and empty shell so to enjoy it I have to bend alot to get it one the road. and yes I understand that dealing with some stuff later may not seem worth it but to me it is.

[dangina]

Thats what Ill do. I wish i could just find a stock set to throw on. I may just get the MP ones for now till they sag and upgrade when I get the money. I hate having to be cheap on everything but I really do not have any other option since my car is just and empty shell so to enjoy it I have to bend alot to get it one the road. and yes I understand that dealing with some stuff later may not seem worth it but to me it is.

go with firm feel then - they sell for xhd and ss springs - if your going for the calvert setup - you might as well get the hotchkis or hypercoil fiberglass springs instead -

[Wicked72]

So i got ahold of leafs and an 8 1/4 rear from a 73. the leafs have 6 leafs on them i thought there were less then that. So im going to take them apart and get the rust off and paint them. How can i get rid of the rubber isolators? I also got a factory rear sway bar so i just need the brackets that attach to the leafs

[FLG]

Grab a hold of shock plates from an early 3rd gen and that should take care of the isolators. Search thru some threads, i know there were a few and im pretty sure thats all youll need to do. But then you should also be running 71-2 springs because there is a difference in the center bolt that holds the leafs together.

[Wicked72]

I think the center hole is larger on the 73-74. When i get into the leafs ill see if those extra leafs were add. i guess ill take them out if thats the case.