Re: SS Springs for a 72 Duster...
[Re: skicker]
#2081013
05/27/16 12:11 AM
05/27/16 12:11 AM
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Joined: Jan 2003
Posts: 5,791 Hamilton, Ontario Canada
Magnum
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master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
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Make your choices on spring rate vs the car's weight. Getting a 002 or 456 because you want the car to sit at a certain height is leaving a lot on the table.
The ride height can be corrected by, as said, flipping the front hanger, which is another tool to change the leverage of the front segment. Like D50, use lowering blocks. Or my favourite, have a local spring shop re arch or de arch to your liking.
As for front shocks, loose on extension and tight on compression. For the rear, they must be long enough to not prohibit travel on a launch and tight enough to control the extension.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: SS Springs for a 72 Duster...
[Re: skicker]
#2081081
05/27/16 01:54 AM
05/27/16 01:54 AM
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Joined: Nov 2004
Posts: 6,890 North Alabama
Monte_Smith
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North Alabama
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I was looking for a pair of SS Springs on Mancini Racing's site...There's a bunch of different ones with different weights... I weighed the 69 Dart and it was at 3240 so thinking the Duster may be a little heavier at 3300 or so. The springs are for a 72 Duster with a 416 and a 727. 8 3/4 rear and 4.56 gears. Which one would be the best to use? 3300 lb springs #MOP 865-866 or something different??? Something different than antiquated 60s technology would be my choice. Like a mono or split mono spring
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Re: SS Springs for a 72 Duster...
[Re: skicker]
#2081212
05/27/16 12:02 PM
05/27/16 12:02 PM
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Joined: Jan 2003
Posts: 5,791 Hamilton, Ontario Canada
Magnum
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master
Joined: Jan 2003
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Hamilton, Ontario Canada
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I'm all up for new and improved designs but how is a single leaf supposed to control axle wind up?
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: SS Springs for a 72 Duster...
[Re: Magnum]
#2081228
05/27/16 12:31 PM
05/27/16 12:31 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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I'm all up for new and improved designs but how is a single leaf supposed to control axle wind up? If its strong... but also.. those springs are meant to use with the caltracs.. as long as the front section in front of the caltrac is strong it will work fine... years ago I made up my own set of springs with a 3/8" thick spring steel mounted from the axle housing to the front eye and left the back segment totally stock... the rear segment is the ride rate and holds up the body..I drove that every day so I didnt want a rough ride
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Re: SS Springs for a 72 Duster...
[Re: skicker]
#2081271
05/27/16 01:42 PM
05/27/16 01:42 PM
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Joined: Jan 2003
Posts: 5,791 Hamilton, Ontario Canada
Magnum
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Hamilton, Ontario Canada
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Cal tracs will take the job of controlling wind up. As long as we all undertand you can not use mono leaf in place of Super Stocks.
I do like the idea of a mono spring weighing less than a SS spring but add in a set of Cal tracs and its probably just as heavy.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: SS Springs for a 72 Duster...
[Re: Magnum]
#2081272
05/27/16 01:50 PM
05/27/16 01:50 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Cal tracs will take the job of controlling wind up. As long as we all undertand you can not use mono leaf in place of Super Stocks.
I do like the idea of a mono spring weighing less than a SS spring but add in a set of Cal tracs and its probably just as heavy. Cal-tracs work to the tune of a 1.04 60 ft. and the car sits and leaves nice n straight. I wouldn't ever want to go "backwards" personally........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: SS Springs for a 72 Duster...
[Re: skicker]
#2081480
05/27/16 08:25 PM
05/27/16 08:25 PM
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Joined: Jan 2003
Posts: 6,531 Jacksonville, FL
Chris2581
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Jacksonville, FL
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FWIW.....I use the 456/457 springs on my 71 Demon.Has a 440 in it.
Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.
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Re: SS Springs for a 72 Duster...
[Re: Chris2581]
#2081661
05/28/16 02:27 AM
05/28/16 02:27 AM
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Joined: Mar 2007
Posts: 3,298 West Coast, USA
jbc426
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West Coast, USA
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I backed my Caltracs off in a mis-guided attempt to make them livable on the street. The car quickly bent the front spring segment of the mono-leaf due to spring wrap. I ended up pulling and selling the set-up. They are great for a smooth race track, but brutal on the back on the open road.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: SS Springs for a 72 Duster...
[Re: jbc426]
#2081668
05/28/16 03:08 AM
05/28/16 03:08 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
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Posts: 27,421
Balt. Md
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I backed my Caltracs off in a mis-guided attempt to make them livable on the street. The car quickly bent the front spring segment of the mono-leaf due to spring wrap. I ended up pulling and selling the set-up. They are great for a smooth race track, but brutal on the back on the open road. My buddy had Cal Tracs on his street car and they were pretty noisy and rattled some. No big deal but I always like how the SS springs rode for me in my cars over the years so I went with the SS springs on my 63 and the car rides and drives very nice on them. I agree there are better options out there and if my car was a race only car I would have looked at it different. But the SS springs were much cheaper then the full Cal Trac setup and they do work fine for a mild street car like mine that see's the track once or twice a year at the most. I am not out to set a record and I can still race in some NSS races that use a full tree and even cut some decent lites on a full tree. Can I run on a Pro Tree ? Sure but I will get my butt kicked as I know my car wont do well on a Pro Tree with SS springs and no trans brake but I dont race on a Pro tree. I guess my point is that yes SS springs are old 60's technology but they do still work ok for me and what I do and I am sure they fit the bill for some others. If I was a serious racer I would be running Cal Tracs for sure but I like the ride the SS springs give me and I can still go to the track and have fun and do ok. I completely agree they are not the best in todays world but for a guy on a tight budget with a mild driver street/strip car like me they work ok. Ron
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Re: SS Springs for a 72 Duster...
[Re: 383man]
#2081729
05/28/16 10:09 AM
05/28/16 10:09 AM
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Joined: Feb 2003
Posts: 6,849
fullmetaljacket
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The JRS springs that Mancini sells as USA made SS springs sagged about a year or so after they were installed. They worked okay but not optimum and as you'll probably already know, weight was not the culprit. Like 383 said, they are okay for a mild to warmer/street/strip combo. Keep in mind that these newer springs may work better on some cars more than most and that is factored with many variables like convertor, driver, tires, track conditions, tuning, etc etc..... The old original USA and Canada made SS springs were the darlings of yore, but only a true few NOS specimens are still around in peoples basements and are the likes of a treasure hunt to find. I know of a 002-003 set of springs still in possession of someone here in Brooklyn since the 70's, but he does not want to sell 'em even though he is not racing anymore.
I personally love the old stealth look and to a certain extent, the old performance of the old original SS springs, but to try and catch up with today's technology, the only viable set ups that I have seen that work are the Tri-city launchers. Surprisingly, they are maybe a pound or two in weight over the Mancini SS springs and like Monte mentioned, it's all about the main spring, the thickness and the spring rate at front compared to the rear. I have recently SPRUNG for a pair (They are up to or just under the cost of a Caltrac system) and we'll see how they fair after more TNT. So far, they are potent. I bet some people have made their own and come off with good numbers.
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Re: SS Springs for a 72 Duster...
[Re: fullmetaljacket]
#2081749
05/28/16 11:05 AM
05/28/16 11:05 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
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Romeo MI
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Just the other day when I was calibrating my speedo I had my buddy ride along...he commented how nice my car rode.. thats with ladder bars and struts in front. with coil overs in back.. he thought it was gonna be a rough ride.. he said it rides better than his truck with caltracs and leafs
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Re: SS Springs for a 72 Duster...
[Re: skicker]
#2081811
05/28/16 01:04 PM
05/28/16 01:04 PM
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Joined: Nov 2004
Posts: 6,890 North Alabama
Monte_Smith
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master
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North Alabama
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Here is the thing many miss, even the guys with Cal-Traks, ladder bars, struts, 4 links, whatever. The car does NOT ride bad because you have one of the above for suspension. It rides bad because MOST people grossly overspring their car. You put log wagon springs on it, don't be surprised when it rides like one. Guys with cal-tracs, it's NOT the bars that makes it ride rough, it's the spring. The rear segment of the spring is what the car rides on, with bars and if it rides really hard, you have too stiff a rear segment most likely
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Re: SS Springs for a 72 Duster...
[Re: Monte_Smith]
#2081823
05/28/16 01:21 PM
05/28/16 01:21 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Here is the thing many miss, even the guys with Cal-Traks, ladder bars, struts, 4 links, whatever. The car does NOT ride bad because you have one of the above for suspension. It rides bad because MOST people grossly overspring their car. You put log wagon springs on it, don't be surprised when it rides like one. Guys with cal-tracs, it's NOT the bars that makes it ride rough, it's the spring. The rear segment of the spring is what the car rides on, with bars and if it rides really hard, you have too stiff a rear segment most likely Yep.. I think I have 100#/per inch springs on my Rampage.. they might be 110#..I had to get a different set for both ends of the car.. the fronts were too stiff and the backs were a bit light(with a full tank of fuel).. I missed it by 10# on the rear springs
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