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E-body trunk torsion springs
#237259
02/26/09 07:47 PM
02/26/09 07:47 PM
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Joined: Oct 2006
Posts: 7,371
Iowa
burdar
OP
Owen's Dad
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OP
Owen's Dad
Joined: Oct 2006
Posts: 7,371
Iowa
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I have a question reguarding the possition of the trunk torsion springs. As you can see in the picture, there are multiple holes for the spring to go into. Depending on what hole you put the spring in, you would get more or less tension on the spring. Did cars that had spoilers from the factory have the springs installed in a different hole than cars without spoilers? I would think that the added weight of the spoiler would require more tension on the trunk springs in order to keep it open. If not...why all the extra holes?
Last edited by burdar; 02/26/09 07:48 PM.
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Re: E-body trunk torsion springs
[Re: burdar]
#237262
02/26/09 11:13 PM
02/26/09 11:13 PM
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Joined: Aug 2003
Posts: 8,828
Houston, Tx
hemi68charger
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Posts: 8,828
Houston, Tx
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Quote:
Really...71 only had one bar? My 73 has 2 and you couldn't even get a spoiler from the factory.
Yeap, '71 only had one.. Maybe they tried to cut costs and then realized it was a mistake, hence the 2 rod setup came back? 
TroyHouston Mopar Connection Club'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi) '69 Charger 500 440 - 4speed - 3.54 Dana '70 Road Runner 383 - 4speed - a/c (now with 440)
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Re: E-body trunk torsion springs
[Re: hemi68charger]
#237263
02/26/09 11:58 PM
02/26/09 11:58 PM
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Joined: Oct 2006
Posts: 4,165
Florida
cataclysm80
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master
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Florida
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 with everything said above... Now if we could only get some info from survivor cars about which hole to use for what application? Or Maybe we could just weigh the 4 options? No Spoiler or luggage rack = lightest weight Go Wing, Trans Am spoiler, Luggage Rack weigh how much? I know if you use a fiberglass reproduction Trans Am spoiler that it's heavy enough that none of the tension setting will lift the trunk lid properly. Tav
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Re: E-body trunk torsion springs
[Re: cataclysm80]
#237264
02/27/09 01:14 AM
02/27/09 01:14 AM
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Joined: Jan 2006
Posts: 247
I DA HOE
3406pac
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enthusiast
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I DA HOE
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Ive asked that same question here before and only got the above responses. Are there different lengths? Mine seems to pop out on the right side and that is with very little tension. Although it may be bent and I dont know it. I wouldnt think that spring steel would bend and loose its memory. It is a 71 challenger vert on a plain trunk. Thanks 
AAR cuda
71 rag challenger
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Re: E-body trunk torsion springs
[Re: burdar]
#237269
02/27/09 11:40 AM
02/27/09 11:40 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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The thing on the mat is a plastic bag that contained the valve stem caps. If you look you can see the white dot at the end of them. Originally, the cars came with the longer caps that had a white "push type" button in them. They were a pain especially if you tagged a curb and then pinched the cap, gave you a nice and slow air leak.
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Re: E-body trunk torsion springs
[Re: ]
#237270
02/28/09 12:30 AM
02/28/09 12:30 AM
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Joined: Oct 2006
Posts: 4,165
Florida
cataclysm80
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master
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Florida
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Again. That's probably Dave Waldens car in the pic right? Maybe he could shed some light onto the topic of trunk torsion bars for us with his extensive research. Tav
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Re: E-body trunk torsion springs
[Re: burdar]
#237272
02/28/09 10:46 AM
02/28/09 10:46 AM
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Joined: Jun 2003
Posts: 21,446
It's a dry heat
gtx6970
Too Many Posts
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Too Many Posts
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Posts: 21,446
It's a dry heat
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Quote:
Not only is that a 71 and it has two springs but...the orange body plugs for shock access, aren't on the top of the trunk pan. I thought 70-71 had the plug on top and 72-74 had it on the side. Maybe that's just on the Challengers?
metal shock plugs are typically 1970 only, but have been found on some early 71's . where the orange plug on the side of the hump is typical for 1971 and later
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Re: E-body trunk torsion springs
[Re: hemi68charger]
#237273
02/28/09 01:26 PM
02/28/09 01:26 PM
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Joined: Mar 2008
Posts: 9,550
Sacramento CA
Morty426
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Sacramento CA
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Quote:
Quote:
Really...71 only had one bar? My 73 has 2 and you couldn't even get a spoiler from the factory.
Yeap, '71 only had one.. Maybe they tried to cut costs and then realized it was a mistake, hence the 2 rod setup came back?
I've seen mid year cars with no spoiler or luggage rack have one rod (which is thicker) and late 71 having two rods.
I would bet that a 71 car with a spoiler or luggage rack would have two rods
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Re: E-body trunk torsion springs
[Re: Morty426]
#237274
09/09/09 12:24 AM
09/09/09 12:24 AM
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Joined: Jan 2006
Posts: 247
I DA HOE
3406pac
enthusiast
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enthusiast
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I DA HOE
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7 Months later, and the mystery remains. Maybe this time it wont go so off subject.
AAR cuda
71 rag challenger
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Re: E-body trunk torsion springs
[Re: 3406pac]
#237275
09/09/09 12:50 AM
09/09/09 12:50 AM
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Joined: Jan 2003
Posts: 29,654
Hamtramck, PA
Alaskan_TA
Fluffy Balladeer
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Fluffy Balladeer
Joined: Jan 2003
Posts: 29,654
Hamtramck, PA
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My T/A (with spoiler) has two rods. My '71 (no spoiler) had one rod, but it was a larger diameter. Is that a fake vehicle traveler sheet I see? 
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Re: E-body trunk torsion springs
[Re: Snoopy]
#237277
09/09/09 03:56 AM
09/09/09 03:56 AM
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Joined: Mar 2003
Posts: 8,850
Central Coast, Calif.
Snoopy
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Posts: 8,850
Central Coast, Calif.
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Quote:
I've seen mid year cars with no spoiler or luggage rack have one rod (which is thicker) and late 71 having two rods.
I would bet that a 71 car with a spoiler or luggage rack would have two rods
What do you think the multiple slots in the anchor brackets are for?
Read the factory service manual for deck lid tension adjustment.
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Re: E-body trunk torsion springs
[Re: cudaized]
#237282
09/09/09 04:45 PM
09/09/09 04:45 PM
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Joined: Jan 2003
Posts: 5,117
Chicago Blackhawks
hemicar1971
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master
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Chicago Blackhawks
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Nice car Ola, thanks for the CD.
My 1971 Challenger Convt. early built car with a luggage rack uses one bar. My 1971 Challenger Hardtop Begining of June built car that came with a wing uses one Bar. At Carlisle a friend that has a 1971 Challenger that was built about 8000 cars behind mine told me he has the two bar system. I do not know the reasoning of why but Chrysler did start to change over to 1972 model parts around this time. My June built Challenger has many 1972 type parts. Slotted bumpers, 1972 trunk floor pan, etc. If this thread sticks around I will look at both my Nov. built 1971 Cudas and see what is in there trunks for a trunk bars.
1971 HEMI E BODY REGISTRY
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Re: E-body trunk torsion springs
[Re: cudastruction]
#237284
09/10/09 07:04 PM
09/10/09 07:04 PM
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Joined: Mar 2007
Posts: 89
oregon
ramcharger1964
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member
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Posts: 89
oregon
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Is there a tool for removing these bars from the holes? I had a @#$% of a time on my 64 Polara - I ended up cutting them out and then re-welding them back in (the mounting plates not the bars)!!!
Hell B!tch Racing Co.
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Re: E-body trunk torsion springs
[Re: ramcharger1964]
#237285
09/10/09 09:28 PM
09/10/09 09:28 PM
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Joined: Jan 2003
Posts: 4,784
Ontario, Canada
mccannix
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master
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Ontario, Canada
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Also of note is the fact that Challenger torsion bars will not interchange with Cuda. They are 44 inches long on the straight measurement. Cuda are 39 inches. This is a 71 Challenger decklid, May SPD car, no wing or rack, has one rod and it is heavier than a Cuda rod. Rod is in the third slot in, possibly because a Challenger lid is heavier than Cuda Also Challenger htp mounting brackets are different than Cuda htp.
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Re: E-body trunk torsion springs
[Re: B5TA]
#237291
09/11/09 11:41 AM
09/11/09 11:41 AM
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Joined: Apr 2005
Posts: 881
Ohio
B5TA
super stock
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super stock
Joined: Apr 2005
Posts: 881
Ohio
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Re: E-body trunk torsion springs
[Re: burdar]
#237293
09/12/09 08:10 AM
09/12/09 08:10 AM
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Joined: Feb 2008
Posts: 287
Greenville, N.C.
BarrsRestoration
enthusiast
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enthusiast
Joined: Feb 2008
Posts: 287
Greenville, N.C.
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Quote:
Not only is that a 71 and it has two springs but...the orange body plugs for shock access, aren't on the top of the trunk pan. I thought 70-71 had the plug on top and 72-74 had it on the side. Maybe that's just on the Challengers?
That car started life as a 70 (2 springs!), owner wanted a 71. Trunk pan was aftermarket and pre-drilled for shock bolt holes.
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Re: Mopar trunk torsion springs - Torque adjustment?
[Re: 70440+6bbl]
#237297
02/06/10 09:27 PM
02/06/10 09:27 PM
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Joined: Jan 2007
Posts: 292
State of Flux
Dodge Don
enthusiast
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enthusiast
Joined: Jan 2007
Posts: 292
State of Flux
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So for adjusting the decklid tosion bars, which holes create more torque, the ones furthest to rear or the ones furthest toward the front?
Last edited by Dodge Don; 02/06/10 09:33 PM.
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Re: Mopar trunk torsion springs - Torque adjustment?
[Re: Dodge Don]
#237299
02/07/10 11:33 AM
02/07/10 11:33 AM
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Joined: Oct 2006
Posts: 4,165
Florida
cataclysm80
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Florida
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Quote:
So for adjusting the decklid tosion bars, which holes create more torque, the ones furthest to rear or the ones furthest toward the front?
The holes closest to the rear seat have the least, and the holes closest to the tail lights have the most.
Usually if you add a spoiler or luggage rack to your car, you'll need to move the trunk torsion bar(s) a notch or two toward the tail lights.
Tav
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Re: E-body trunk torsion springs
[Re: 70440+6bbl]
#237301
11/11/11 12:13 PM
11/11/11 12:13 PM
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Joined: Dec 2004
Posts: 425
WNY
slimert
mopar
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mopar
Joined: Dec 2004
Posts: 425
WNY
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Quote:
Thanks, it is one of the cleanest '70 'Cudas that I have owned, hard to believe considering it was a life long Buffalo, NY car (with a 2 year stint in California:-)!
That is amazing! Must have been a summer car. Most Buffalo cars got ate up from the road salt.
My 71 Challenger early built 8/28 has single rod, no wing or rack. My friend has a slant 6 71 Chall vert that he added a go wing and it won't stay open. He wondered if there is a thicker single rod, or maybe making one.
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Re: Mopar trunk torsion springs - Torque adjustment?
[Re: lahatte]
#237302
11/27/11 12:48 PM
11/27/11 12:48 PM
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Joined: Oct 2006
Posts: 4,165
Florida
cataclysm80
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master
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Florida
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Quote:
To add to this old thread, I have a 1972 318 Barracuda built in 7/1971, and it has one spring.
That's extremely early, is it a pre-production test car?
Tav
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Re: Mopar trunk torsion springs - Torque adjustment?
[Re: cataclysm80]
#237304
11/27/11 01:38 PM
11/27/11 01:38 PM
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Joined: Mar 2008
Posts: 9,550
Sacramento CA
Morty426
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master
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Sacramento CA
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Quote:
Quote:
To add to this old thread, I have a 1972 318 Barracuda built in 7/1971, and it has one spring.
That's extremely early, is it a pre-production test car?
Tav
It's also really odd as by June 71 Challengers had gone back to two springs
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Re: E-body trunk torsion springs
[Re: BS27R1B]
#237308
11/29/11 01:12 PM
11/29/11 01:12 PM
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Joined: Mar 2008
Posts: 9,550
Sacramento CA
Morty426
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Joined: Mar 2008
Posts: 9,550
Sacramento CA
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Quote:
Quote:
Not only is that a 71 and it has two springs but...the orange body plugs for shock access, aren't on the top of the trunk pan. I thought 70-71 had the plug on top and 72-74 had it on the side. Maybe that's just on the Challengers?
Late 71 cars can have the 72 trunk pan with the shock access holes on the rear side of the pan instaed of the top. From cars I have seen it seems like a switch some time in May 1971.
I would agree. My Challenger 340 with an SPD of 520 has the later pan. My sixpack with a SPD of 331 has the early pan
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Re: Mopar trunk torsion springs - Torque adjustment?
[Re: lahatte]
#237309
12/27/11 12:07 AM
12/27/11 12:07 AM
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Joined: Oct 2006
Posts: 4,165
Florida
cataclysm80
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Florida
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Quote:
The 1972 318 Barracuda is indeed 7/1971, as per the VIN sticker on the door. Sequence number is 0009xx. Here is a picture of it before I started tearing it down for a 1971 convertible conversion...
Wow, that's a real early built car. What's the Scheduled Production Date off the fender tag?
Tav
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