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Old Aug 15, 2010 | 02:55 PM
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Default under car heat shields

I saw a picture of the underbody of a car with metal heat shields under the floorboards. I was wondering if those were oem or home made?
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Old Aug 15, 2010 | 03:46 PM
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It depends on the year. The OEM shield are for the cats, footboard area and some under the differential.

Stephen
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Old Aug 15, 2010 | 04:25 PM
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My 73 has a heat shield at each side of the engine, at the front sloped area of the floor boards, which is stock for most years of that era. If that is what you mean.
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Old Aug 15, 2010 | 04:29 PM
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Early C3's had "rock" shields. They did little [if anything] to prevent heat from exhaust system.
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Old Aug 15, 2010 | 07:36 PM
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My 71' has them, 78' doesn't. I agree with 7T1vette, rock shields as they don't do squat for heat.

Gary
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Old Aug 15, 2010 | 07:54 PM
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My '71 has them as well, from the factory. Definitely not for heat.
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Old Aug 15, 2010 | 08:16 PM
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My 69 has them (in a box right now). Guessing it'll help protect the fiberglass floorboard from rocks but not much of a heat shield.
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Old Aug 15, 2010 | 08:20 PM
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Rock shields huh, Ok. I wonder if a layer of insulation can be put in between the shield and the floor board. Im trying to do heat control without pulling the carpet right now.
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Old Aug 15, 2010 | 09:10 PM
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The only way to insulate for heat is to put a heat insulator under the carpeting. The sound deadener material will quiet your ride, but it won't reduce the heat [although it may slow it down a bit].
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Old Aug 15, 2010 | 09:21 PM
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Originally Posted by 7T1vette
The only way to insulate for heat is to put a heat insulator under the carpeting. The sound deadener material will quiet your ride, but it won't reduce the heat [although it may slow it down a bit].
Ok not sure where sound deadner came from. I was thinking of putting a layer of heat insulation between the floorboards and the rock shield. As long as its between your feet and the exhaust pipes does it really need to be under the carpet.
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Old Aug 15, 2010 | 09:41 PM
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Just did my 68 w/ side pipes.I first wrapped the E pipe from the manifold back to the muffler as it went right below my feet and was terrible. I the got self sticking heat reflective material and stuck it directly to the floor boards from underneath between the rock shields and the floor. The previous owner fastened insulation to the top side of the shields which left a gap and air space between the insulation and the floor and it didn't do squat for heat reduction. Don't forget to put heat shield over top of transmission as there is also a lot of heat transfer from it. I would safely say this method reduced my heat problem by 50 to 60%.
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Old Aug 15, 2010 | 09:52 PM
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My 69 has them and all i hear when at a stop light is one of those darn things rattling.

I haven't had time to mess around in that area yet but I'm pretty sure i saw one was attached with a zip tie....

Are these shields really needed? I'd like to lighten the car up as much as possible if i can eliminate them. Maybe i can spray some undercoating on the bottom of the fiberglass to help with the rocks?
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Old Aug 16, 2010 | 06:46 AM
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My 69 has the rock shields as well and in addition the factory type heat insulation between them and the floor boards



In addition I did install under carpet insulation for coolest possible driving without A/C

Carsten
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Old Aug 16, 2010 | 09:03 AM
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Originally Posted by weinh
My 69 has the rock shields as well and in addition the factory type heat insulation between them and the floor boards



In addition I did install under carpet insulation for coolest possible driving without A/C

Carsten

My 69 has the same insulation under the rock guards. I have the tunnel insulation, but it's not installed.
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Old Aug 16, 2010 | 10:01 AM
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Originally Posted by PUNISHER VETTE
My 69 has them and all i hear when at a stop light is one of those darn things rattling.

I haven't had time to mess around in that area yet but I'm pretty sure i saw one was attached with a zip tie....

Are these shields really needed? I'd like to lighten the car up as much as possible if i can eliminate them. Maybe i can spray some undercoating on the bottom of the fiberglass to help with the rocks?
My 77 came with no shields, but a metal floorpan with the angled firewall still being glass. Pass side had a hole it in from something thrown up.
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