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Old Jan 7, 2014 | 10:15 PM
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Default Tunnel plate question

I replaced the tunnel plate on my C6 GS. I have the OEM one in the garage now. Can anyone tell me definitively if the C6 plate will fit a C5?
I have a C5 as well and if they are a direct fit I may just jack it up and install it. It isn't GREAT but it looks better than the C5 OEM one (which amounts to nothing more than a dust cover).

Thanks
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Old Jan 7, 2014 | 11:47 PM
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Same
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Old Jan 8, 2014 | 11:27 AM
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cool, thanks
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Old Jan 8, 2014 | 11:35 AM
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The C5 plate is not just a dust cover but a well engineered piece with very special balsa wood sandwiched in the middle. You can read about their discussions of the added cost and design functions in "All Corvettes are Red". Great book if you have never read it.
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Old Jan 8, 2014 | 12:46 PM
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Originally Posted by dadaroo
The C5 plate is not just a dust cover but a well engineered piece with very special balsa wood sandwiched in the middle. You can read about their discussions of the added cost and design functions in "All Corvettes are Red". Great book if you have never read it.
Huh????????? My tunnel plate was tin, I'll bet your thinking about the floor.
The C6 plate is a good improvement over the stock C5 but I'll bet you could double up and use both the C5 & C6 plate for even better results.
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Old Jan 8, 2014 | 01:32 PM
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Originally Posted by corvettebob1
Huh????????? My tunnel plate was tin, I'll bet your thinking about the floor.
The C6 plate is a good improvement over the stock C5 but I'll bet you could double up and use both the C5 & C6 plate for even better results.
The floorboards use the balsa-wood sammich, not the tunnel plate.
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Old Jan 8, 2014 | 02:14 PM
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Doubling up is what I was thinking also. Can't hurt, right?

thanks guys
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Old Jan 10, 2014 | 01:01 AM
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Originally Posted by jbondfl
Doubling up is what I was thinking also. Can't hurt, right?

thanks guys
Pop rivet the two together or you'll end with a harmonic rattle.
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Old Jan 10, 2014 | 07:30 AM
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Originally Posted by Last C5
Pop rivet the two together or you'll end with a harmonic rattle.
Although I have not heard of any reports of this occurring, I do think that is an excellent precautionary tip.

In that same vein, I guess you could lay down a bead of silicone either in place of, or in addition to, a series of pop-rivets.
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Old Jan 10, 2014 | 08:56 AM
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Originally Posted by LoneStarFRC
Although I have not heard of any reports of this occurring, I do think that is an excellent precautionary tip.

In that same vein, I guess you could lay down a bead of silicone either in place of, or in addition to, a series of pop-rivets.
OR you could put a piece of Balsa wood between them......sorry could not resist....just joking..
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Old Jan 10, 2014 | 09:18 AM
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Originally Posted by alxltd1
OR you could put a piece of Balsa wood between them......sorry could not resist....just joking..
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Old Jan 10, 2014 | 10:15 AM
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Originally Posted by LoneStarFRC
Although I have not heard of any reports of this occurring, I do think that is an excellent precautionary tip.

In that same vein, I guess you could lay down a bead of silicone either in place of, or in addition to, a series of pop-rivets.
Get some insulating material and put it between the two plates to help with the console heat.
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Old Jan 10, 2014 | 10:39 AM
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Originally Posted by chaase
Get some insulating material and put it between the two plates to help with the console heat.
That thought occurred to me as well so I think the choice of insulating material needs to be carefully considered in light of both temperature and moisture resistance. Anything chosen will see water, and if it's a porous material, will act like a sponge, trapping water between the two steel layers. Even exhaust heat may or may not "burn off" absorbed moisture (think driving short trips).
For heat rejection, I would recommend just going with Thermal Abs from Elite Engineering on the under side, regardless of whether it's being used on a stock single plate or "doubled" plate. That thing really works well.
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Old Jan 10, 2014 | 11:19 AM
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When I did my exhaust, I removed the plate and used some of the bubble wrap silver stuff from Home Depot. I put some up over the torque tube and on top of the plate. Also made a second plate out of some metal I had laying around. I think I put a piece between the plates also. It made a world of difference on heat coming into the cabin. May have helped a little with the noise.
Chris
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