Leaf spring recomendation
#2507776
06/13/18 01:33 AM
06/13/18 01:33 AM
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Joined: Oct 2006
Posts: 427 Sweden
Mopar Guy
OP
mopar
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OP
mopar
Joined: Oct 2006
Posts: 427
Sweden
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I need new rear springs for my 70 Challenger for street use and some strip so what should i get !? 4 speed and 505 !
Last edited by Mopar Guy; 06/13/18 09:50 AM.
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Re: Leaf spring recomendation
[Re: Mopar Guy]
#2507861
06/13/18 11:45 AM
06/13/18 11:45 AM
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Joined: Jan 2003
Posts: 10,016 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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I Live Here
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Frostbitefalls MN (Rocky&Bullw...
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On spring weight, i would err on the light side. Less hieght gain at rest, and more chassis seperation on the street, where traction will be a problem with a 505. Control rise with good, adjustable shocks.
Last edited by gregsdart; 06/13/18 11:46 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Leaf spring recomendation
[Re: Mopar Guy]
#2507922
06/13/18 02:14 PM
06/13/18 02:14 PM
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Joined: Jan 2003
Posts: 13,385 Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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Marion, South Carolina [><]
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If you don't want to go w/ Cal-Tracs and their monoleaf springs, I'd look into the Launcher springs...made by Tri-City Competition, Greg Luneak in California.
Stay away from the MP SS springs unless you can find an old set of the good ones. The new ones are junk.
The launchers will ride rough and bouncy on the street. The Cal-Tracs are better IMO and you can back off the preload on the bars when you street drive it to make it more comfortable.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Leaf spring recomendation
[Re: an8sec70cuda]
#2507945
06/13/18 02:51 PM
06/13/18 02:51 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
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Posts: 19,318
State of confusion
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If you don't want to go w/ Cal-Tracs and their monoleaf springs, I'd look into the Launcher springs...made by Tri-City Competition, Greg Luneak in California.
Stay away from the MP SS springs unless you can find an old set of the good ones. The new ones are junk.
The launchers will ride rough and bouncy on the street. The Cal-Tracs are better IMO and you can back off the preload on the bars when you street drive it to make it more comfortable. And guys are as fast/faster on Cal-tracs that ladder bars and even in the 1-teens 60 ft. iirc plus like said above, you can back em off for street driving............
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: Leaf spring recomendation
[Re: Mopar Guy]
#2507954
06/13/18 03:06 PM
06/13/18 03:06 PM
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Joined: Jan 2003
Posts: 13,385 Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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Marion, South Carolina [><]
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Guys have been real fast on Cal-Tracs and they work good for sure, but a ladder bar/coilover setup will be more consistent. Like when I hear people talking about the 3 second 1/8 mile passes on drag radials like it happens all the time...that only happens at radial events w/ CRAZY GOOD track prep. Or Ron Rhodes' Camaro going 4.30s on leaf springs and a 275 tire. Like my own car, there are some real fast passes mixed in w/ a bunch of aborted runs due to traction problems.
Unless you have class rules or just don't want to use anything other than stock style suspension, there's no reason NOT to go to ladder bars or a 4 link. Just depends on what you're gonna do w/ the car. My point is I don't think there's a leaf spring car out there that wouldn't go faster or be more consistent w/ ladder bars under it.
I seriously doubt this applies to the OP and his car. Sorry for straying off the topic.
Last edited by an8sec70cuda; 06/13/18 03:07 PM.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Leaf spring recomendation
[Re: Mopar Guy]
#2508075
06/13/18 06:55 PM
06/13/18 06:55 PM
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Joined: Dec 2013
Posts: 4,700 Wichita
GY3
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master
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Wichita
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Thanks guys ! I Will look at the Cal Tracks then. Any partnummer that you know of for my Challenger from them ? Go to their website and enter your car.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Leaf spring recomendation
[Re: Mopar Guy]
#2508104
06/13/18 07:54 PM
06/13/18 07:54 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
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State of confusion
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Thanks guys ! I Will look at the Cal Tracks then. Any partnummer that you know of for my Challenger from them ? You may want to ask about the 25" ft. segment and see what they say cos my car hooks n books since I switched from the stock 20" yet some fly with that as well..........
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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