I figured with all the knowledge at this awesome web site someone might have the answer to this. Has anyone had this problem? After my car warms up and I start driving there is an enormous amount of hot air blowing into my driver seat area. Mainly down by my feet and along the inner floor vent on the side. How do I correct this it is unbearable to drive in the summer like this. Any pics would be helpful too.

Funny, Every Vette I've been in does this...  My 81 is an ankle burner...

There are a ton of threads on this in the archives,it's an on going problem,if you can possibly amagine that there are problems with Vettes .your hot water contol valve may be stuck open in the engine compartment,the seals on the doors down behind the kick panel might be deteriorated,.there is a lot of heat coming in from the engine compartmentany openings in the firewall will let it in.a lot of guys have put manual shut off valves on the heater hoses so no hot water can get to the heater core and it does help

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C3VR Lifetime Member #93
 

Try these old posts, they may help.  Im sure there are more but these are the first ones I found.  Hot air can come in at all the locations that Ron mentioned. Most, if not all, of us have fought this same problem in the summer.

Adding insulation under the carpet will help a lot.

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I first replaced vacumm valve in the one heater hose, no effect.  I than put the insulation under the carpet and manual valves on both the heater core hoses.  Fixed the problem.  You do have to stop and open the valves if you ever get cold.  Unless it's winter that never happens.

This is a pretty good thread on the subject as well:

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I've have the shut off valves, headers wrapped, and trans covered. The heat that I still get on my right foot is incredible . My next step will be the vent doors, firewall, and carpet. I really don't want to touch the carpet, it's the original, and in excellent shape.

Do you have A/C in this Vette?? If yes on the consol control HOT and COLD cable connects to a water shutoff valve. If this don't close when you put on cold. The hot water from your heater pumps into the cage.  Now if you don't have A/C.   Install a pair of side pipes. They don't go under the cage. and you will feel the difference and hear it too.

I had the same problem until discovering the heater hose vacuum switch was corroded and leaking. I replaced it with a manual cut off, leaving it in the off position, and from that time on the A/C has been awesome.

Get a piece of 3" thick foam rubber, cut so it's a little larger than the duct opening (by your right foot) and shove it into the vent, when you want heat pull it out. It stops that source of heat. But you need those shut off valves on both hoses for sure. DaveM2008-07-11 23:49:38

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Lifetime Member #116
Dave's '82

   

[QUOTE=dwright]... [/QUOTE]

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Lifetime Member #150

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