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Finally installed a driveshaft loop...

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Old Nov 11, 2006 | 06:42 PM
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Default Finally installed a driveshaft loop...

I've been running in the 10's for a while now and I haven't even had a driveshaft loop.. I finally ordered the universal Summit driveshaft loop ($24.95) and installed it today.. I had to relocate one of my 2 transmission coolers as the old location interfered with the loop. Had to sacrifice the 2nd one.. My tranny was running VERY cool, so 1 cooler should get the job done anyways.. Otherwise I'll have to get a shorter 2nd one.. The 18 inch cooler won't fit on the other side..
I could NOT install the top of the driveshaft loop as the clearance to the top of the tunnell is only 1/10 inch and the loop is 1/4 inch thick.. The driveshaft could actually never get out on top because the rear frame would block it from getting up that high to jump over the edge so I should be safe.. Here are the pics of the install:
(the driveshaft sits so high in the tunnell that it's not visible in the pics)


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Old Nov 11, 2006 | 09:17 PM
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Is that loop just bolted to the floorpan? I used one from
dragvette that mounts to the crossmember. I don't like how low it hangs but it is very secure.
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Old Nov 11, 2006 | 09:36 PM
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Originally Posted by gyopp
Is that loop just bolted to the floorpan? I used one from
dragvette that mounts to the crossmember. I don't like how low it hangs but it is very secure.
The dragvette loop costs 4 times what I paid for mine.. It's bolted to the floor pan with huge washers..

Anyways, on a Vette, the driveshaft can't drop down anyways because it'll hit the rear frame on it's way down.. The loop is just to make the car legal at the track..
Well, the dragvette loop wouldn't fit my car because my tunnell is way off to one side and my driveshaft also sits very high.. (1/10 inch between the top of the tunnell and the driveshaft) Nothing is going to fit there between..

Last edited by GrandSportC3; Nov 11, 2006 at 09:38 PM.
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Old Nov 11, 2006 | 10:19 PM
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Cool, does it install without removing the driveshaft?
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Old Nov 11, 2006 | 10:40 PM
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i would plate the inside and oustide of the fiberglass.....1/8" aluminum..... sandwich that glass...........just my .02


b
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Old Nov 11, 2006 | 10:52 PM
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Originally Posted by Jughead
Cool, does it install without removing the driveshaft?
If you don't install the top part of the setup (like I did) you won't have to remove the driveshaft. You will hovever have to cut the funnell a little bit as the loop is wider than the tunnell width.. Anyways, it's covered by carpet and won't be visible...
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Old Nov 11, 2006 | 10:54 PM
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Originally Posted by onaqwst
i would plate the inside and oustide of the fiberglass.....1/8" aluminum..... sandwich that glass...........just my .02


b
I've thought of that but... considering that they driveshaft actually can't drop to the floor on a C3, I didn't do it..
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Old Nov 12, 2006 | 08:58 AM
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This is an old picture of my old exhuast but that aluminum plate like yours Oliver is to catch the driveshaft at the front if it drops. I know it would be good for a complete loop but I run a full 3 inch shaft and there is just not room for a 1/4 inch shaft.
At least the drive shaft would only drop a fraction of an in and thus maintain better alignment and less whip. If the front drops say 3 or 4 inches the whip is that much more severe.
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Old Nov 12, 2006 | 09:09 AM
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This is not my car, but I have the same driveshaft loop, I bought it from Zwede:
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Old Nov 12, 2006 | 09:52 AM
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Originally Posted by norvalwilhelm
This is an old picture of my old exhuast but that aluminum plate like yours Oliver is to catch the driveshaft at the front if it drops. I know it would be good for a complete loop but I run a full 3 inch shaft and there is just not room for a 1/4 inch shaft.
At least the drive shaft would only drop a fraction of an in and thus maintain better alignment and less whip. If the front drops say 3 or 4 inches the whip is that much more severe.
My driveshaft is 3.5 inches thick and those direct fit loops that bolt onto the crossmember wouldn't work..
1) not enough clearance
2) my tunnell is not centered on the car. Early 68's like mine were notorious to have the body out of alignment..
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Old Nov 12, 2006 | 10:09 AM
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Originally Posted by 7t2vette
This is not my car, but I have the same driveshaft loop, I bought it from Zwede:
This is a really nice loop. The dragvette loop bolts up the same but hangs much lower. In fact, it is the first thing you see when you look under the car and that bugs me. I may have to change to onw of these.
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Old Nov 12, 2006 | 11:44 AM
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Originally Posted by 7t2vette
This is not my car, but I have the same driveshaft loop, I bought it from Zwede:
very nice!!

However, I wonder if those would work with a 3.5 inch driveshaft
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Old Nov 12, 2006 | 12:37 PM
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Originally Posted by 7t2vette
This is not my car, but I have the same driveshaft loop, I bought it from Zwede:
I like that one too. I've got the DragVette one too (freakin heavy!), but like the appearance of the Zwede one better. Wonder what it weighs?
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Old Nov 12, 2006 | 02:09 PM
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Originally Posted by gyopp
This is a really nice loop. The dragvette loop bolts up the same but hangs much lower. In fact, it is the first thing you see when you look under the car and that bugs me. I may have to change to onw of these.
It is a really nice piece, I painted mine black, and most people don't notice it until I point it out to them.

Originally Posted by GrandSportC3
very nice!!

However, I wonder if those would work with a 3.5 inch driveshaft
I don't see why the loop part couldn't be made bigger to accomodate the 3.5" driveshaft.

Originally Posted by litevette
I like that one too. I've got the DragVette one too (freakin heavy!), but like the appearance of the Zwede one better. Wonder what it weighs?
I can't remember what it weighs, but it is very stout as you can see in the picture. Zwede had a friend make a few of these, and I believe I was the last person to buy one from him, but you can contact him yourself to find out. I think any competant metal fab shop could make one fairly easily.

EDIT: I found a pic of the loop installed on my actual car, it is hard to see because I painted it black, but it is there!


And since I posted that pic, I thought I would take a moment to post another view from the front, not really topic related, but what the hell!!!

Last edited by 7t2vette; Nov 12, 2006 at 02:23 PM.
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Old Nov 12, 2006 | 02:22 PM
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Originally Posted by 7t2vette
I don't see why the loop part couldn't be made bigger to accomodate the 3.5" driveshaft.
I'm sure that it's possible.. but I there's no way to fit the loop on top of the driveshaft as there's only 1/10 inch clearance to the tunnel.. No loop is going to fit between the tunnel and driveshaft.. Unfortunately..
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Old Nov 12, 2006 | 02:30 PM
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Originally Posted by GrandSportC3
I'm sure that it's possible.. but I there's no way to fit the loop on top of the driveshaft as there's only 1/10 inch clearance to the tunnel.. No loop is going to fit between the tunnel and driveshaft.. Unfortunately..
How about this: remove the top part of the loop completely, and make the bottom part wider to span the width of the trans tunnel (or bigger)......or do nothing at all because your present loop is perfectly functional!
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Old Nov 12, 2006 | 02:34 PM
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Originally Posted by 7t2vette
How about this: remove the top part of the loop completely, and make the bottom part wider to span the width of the trans tunnel (or bigger)......or do nothing at all because your present loop is perfectly functional!
I'll definetely stay with what I have.. I have not top on it bue no top would fit.. Well, the main problem is that the poly tranny mount raises the transmission mount by over 1/2 inch.. With the rubber mount, there could be enough space for a loop.. Anyways, I'm sure that I will pass tech with my current setup!
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Old Nov 12, 2006 | 03:54 PM
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You picture *****! I'd be posting those pics too. Cleany, Clean, clean!!!
Originally Posted by 7t2vette
And since I posted that pic, I thought I would take a moment to post another view from the front, not really topic related, but what the hell!!!
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Old Nov 12, 2006 | 04:35 PM
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I did not know what a loop was until I read this post.... obviously a safety issue/damage control thing. Has anyone tought about these for the half shafts? THose can do some serious damge if they get loose.

Q - you mounted these to the floorpan - that's fiberglass - it seems it would not take much to twist that out - even with 4 bolts each side. That Zwede style looks good though.

BTW - I saw how you re-routed your tranny coolers..... now are both sideways and behind the crossmember? ...wonder how that will affect the cooling of your trans

Last edited by kaiserbud; Nov 12, 2006 at 04:43 PM.
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Old Nov 12, 2006 | 04:58 PM
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Originally Posted by kaiserbud
I did not know what a loop was until I read this post.... obviously a safety issue/damage control thing. Has anyone tought about these for the half shafts? THose can do some serious damge if they get loose.
Yes, they are for a safety issue. If the front of the driveshaft were to drop it may dig into the pavement and flip the car. Yes, they do make them for half shafts. They just prevent a broken half shaft from flopping around and destroying your package tray area, etc. There are diff. types. Here's a pic of mine. They are from Drag Vette.

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