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Author
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Topic: How firm is your rear end???
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Helping Hands
Journeyman Posts: 21
From: Salem,OR
Registered: Jul 2003
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posted 07-31-2003 01:42 AM
  
On your drag car ya sick o'  When my friends drag car (68 Falcon) launches it squats like a dog with worms on the carpet. Ok, it's not that bad, but it don't look good to me. Just how stiff should your rearend spring and shock package be? Anyone know of a leaf that would work on this car that would retain a low ride height and still be stiff?
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SteveLaRiviere
Administrator Posts: 33015
From: Saco, Maine
Registered: May 99
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posted 07-31-2003 06:28 PM
I think your name is preventing people from talking about their rear end...  ------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Please remember our sponsors,
Mustangs Plus, NPD, Osborn Reproductions, and FordRamAir.com
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kid vishus
Gearhead Posts: 4377
From: middle of NC
Registered: Oct 2000
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posted 07-31-2003 06:33 PM
It's not stopping me. The fact my racecar has coil springs is stopping me from answering. Generally, you want a leaf spring car to squat a little. Most of them don't, the rear end normally seperates from the body. You definately dont want that. If the spring is too stiff, it wont plant the tires. I would say, if the car is hooking good now, I wouldn't mess with it.
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steve'66
Gearhead Posts: 6384
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 07-31-2003 06:33 PM
Your friends springs aren't the problem. What is he using for traction bars? SteveW
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Helping Hands
Journeyman Posts: 21
From: Salem,OR
Registered: Jul 2003
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posted 07-31-2003 09:06 PM
I know my name is a little weak but I thought I would only ask a few questions and then I would have to find a new site.But the knowledge that has been brought forth by Alex and others makes it to good to leave.There's no flaiming that I can see either.My hat's off to you guy's! He is using some slapper bar's probably made in the 70"s.I haven't looked at where they are hitting the spring.I know they should be hitting the spring eye. The leaf spring he is using are the main springs off of a 65 Comet and one helper spring. His shocks are old.I believe they are oil filled.They could be the main problem.I think he should get an adjustable gas charged unit.Any ideas? He set his pinion angle at -9 degree.Is that too much? This car gets no street driving.
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Fastymz
Moderator Posts: 11068
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 07-31-2003 09:33 PM
Have you clamped the springs it will make them alittle more firm.
My car is mostly street car the rear is real firm.I have clamped 4 leaf springs and lift bars,woth old worm out leaky air shocks.The rear of my does not sit down.------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. https://mustangsandmore.com/ubb/Fastymz.html
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Helping Hands
Journeyman Posts: 21
From: Salem,OR
Registered: Jul 2003
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posted 07-31-2003 09:47 PM
We have not clamped them yet but we did talk about it earlier today.We work at the same place so we run Ideas by each other a bit each day.
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steve'66
Gearhead Posts: 6384
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 07-31-2003 11:28 PM
HH,With traction bars it shouldn't squat. It should lift the rear of the car on launch. Usually too much, but try clamping the front 1/2 of the leaves. You can also go with Rancho shocks to dampen the "hit" and stiffen it up. Of course the best solution is a pair of CalTrac bars! They're the best! SteveW
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Helping Hands
Journeyman Posts: 21
From: Salem,OR
Registered: Jul 2003
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posted 08-01-2003 01:03 AM
Well the CalTracks are out of the question for now.$$$I think a readjustment or possible lengthening of the traction bar is in order.
Along with a set of shocks.
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