What brand of under carpet, aluminum foil insulation have u used for heat/ noise reduction? Am looking for options for my 1970 BB car.

 

Here’s a thread about it

Here’s another one

Here’s one from 23 years ago

Here’s one from this year

 

Thanks for the links. Good info.

 

I bought a roll of Reflectix at Ace hardware for $20 bucks & used 3M Super 77 spray adhesive to lay it down..

 

Hello,
Remember the cars we love are close to or slightly over 50 years old.
Chevrolet did install underlayment to help control interior heat, moisture and sound.
But not like anything like the materials available today.
I'm not sure how the fact that the body was fiberglass may have impacted these 3 issues.
A few photos of the original underlayment from a 71 coupe.
Jute and rubber.
Regards.....

Rear bulkhead



Rear Wheel well


Driver's side wheel well.




Passenger's side compartment


Passengers side foot well


Drivers side foot well


Drivers side floor

 

(1) The 68 and 69 Corvettes had extensive insulating mats that encompassed the lower external lower half of the firewall and wrapped back under the passenger compartment, terminating at the transmission crossmember. There also was a fiberglass mat covering for the inside of the transmission tunnel. All of this was on the outside structure of the firewall and driver/passenger floor. Steel panels protected the insulating mats that were underneath the driver/passenger's seats. This extensive insulating regime, was I believe, largely missing from the 70 and upward cars. The 68/70 thermal insulating system can easily be installed on 70 and newer cars. (The transmission tunnel insulation was continued for the 70 upwards cars.)

(2) A dramatic drop in interior temperatures will result from adopting the 1969 factory sidepipe exhaust system. The base exhaust system has the exhaust pipes running along the bottom sides of the transmission. What this means is that an exhaust pipe, somewhere between 500 and 1000 degrees F (?) is only a scant few inches from the driver's right foot and only a few inches from the entire interior compartment. In this space there is what? .....a total of less than an inch of insulation and the scant few inches of air. This is a major heat input to the driver's and passenger's compartment. The side exhaust system dumps all of this heat to the exterior sides of the car just right behind the front wheels. OK, the 1969 factory sidepipe system is said to be a little more restrictive than the base exhaust. A workaround is to order your sidepipe mufflers using the C2 sidepipe chambered exhaust mufflers. They are less restrictive than the C3's and I think are no louder. Hi Flow Performance sells C2 chamber exhaust mufflers for use in the C3 chrome plated sidepipe muffler covers.

(3) Vintage Air air conditioning. Another story. I've installed this in my 70...have yet to drive the car.