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C7 tunnel insulation kit

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Old Jun 4, 2025 | 09:05 PM
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Default C7 tunnel insulation kit

Did my first spirited back roads rip and highway stint only to find out the C7 gives off a GOOD amount of heat in the cabin.

I did a decent amount of insulation in my last C5Z with Lt's and full exhaust and never knew how much it helped until I got a stock C7 GS.

I'm not coming up with many insulation kits to install. I did find this DCI kit:
​​​​​​https://www.zip-corvette.com/14-19-d...EKu08SY8lRum7x

I had this kit for my C5 but for some reason they don't make it for the C7
​​​​​​https://www.designengineering.com/c5...-complete-kit/

I also used Header Armor and SS wire to wrap the pipes.





If no kits exist, I don't have a problem removing the factory manifolds/midpipe and custom wrapping them again.
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Old Jun 4, 2025 | 09:16 PM
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you might find something here: MAKING CORVETTES BETTER SINCE 2001
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Old Jun 4, 2025 | 11:58 PM
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Great solution. I went with the full meal deal, including the wheel well insulation, and it cut down considerably on heat and noise. We had him install it. It took about half a day and was well worth it. Everything went back right. No extra parts left, no rattles, etc.
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Old Jun 6, 2025 | 06:46 PM
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From a thermal management standpoint I've been an advocate for blocking/stopping the heat at the source. I don't disagree that removing the interior and adding insulation helps, but I always try to put something on/around pipes or in the tunnel.

I'll have to do some more digging. Otherwise I may just remove the factory manifolds, cats and midpipe and wrap them like I did above.
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Old Jun 7, 2025 | 10:07 AM
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Default Wheel well

Originally Posted by TxLefty
Great solution. I went with the full meal deal, including the wheel well insulation, and it cut down considerably on heat and noise. We had him install it. It took about half a day and was well worth it. Everything went back right. No extra parts left, no rattles, etc.
What was used for the wheel well insulation?
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Old Jun 7, 2025 | 11:43 PM
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If I remember correctly, I believe it was the same stuff he used as the base coat for the interior floor area. Best to contact them though.
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Old Jun 8, 2025 | 10:39 AM
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Thanks
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Old Jun 8, 2025 | 11:56 AM
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Originally Posted by C746490
What was used for the wheel well insulation?
It's the same base layer as the rest of the exteme/double extreme kit, a sticky, asphalt based sound deadener. I did this about a month ago, it was relatively easy, but also a pain in the ***. It made an appreciable difference in noise and heat. It was worth the effort. If you do it, do your self a favor and get some of those sound deadening roller tools.
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Old Jun 8, 2025 | 03:55 PM
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We had six cars done over three days. We paid to fly him out and put him up. Everything worked out perfectly. It was like watching a slow-motion magic show. If you can get several cars done it makes it more affordable.
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Old Jun 8, 2025 | 07:48 PM
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I installed one of his kits in my heavily modified C5, made a huge difference
my ‘19 GS vert has a lot of road noise, his kit is the best solution for sure, just too much work for me anymore at this point of my life but gonna get it done soon as I can
just trying to find a good local installer
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Old Jun 9, 2025 | 04:13 AM
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I guess I come from the other end of the spectrum. I expect it to be noisy. I have never felt excessive heat from the C7 engine. All I hear is the wind rushing by my ears and sometimes music.

A C4 Roadster is always making noise. From the creaking from the bumps in the road, the three layer top, and the contortions it makes that makes the CD skip.

Who does not have fond memories of the adventures they took in their Triumph or Datsun 2000 Roadsters, wondering if they would get where they were going without a mechanical problem. Who did not love the SU carburetor or the Lucas electrics.
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Old Jun 9, 2025 | 11:04 AM
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Yup. First car was an MGB. Only stranded me once, with a failed fuel pump. Fortunately, only about a mile from the house. Those cars were a lot of fun.
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Old Jun 9, 2025 | 06:07 PM
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drlonn?
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