I am thinking of getting a ram air 2 hood for my firebird and was wondering, since they are just fiberglass, what do you put on the underside for heat resistance?

 

you dont need anything

 

You don't need anything on the bottom side of the hood. The stuff on the stock hoods aint there for the reason most people thinks.

Most folks thinks its there to keep the under hood heat from fadding, bulbbling, blistering the paint on top of the hood..
Well it may help, it may not help.

The top side of the hood, during the summer, with the sun hitting it will get to a hotter temp than the engine bay heat will ever get it.

Try to burn some of the stock stuff... You'll notice it don't burn. Also look at whats holding it in in place.. Plastic button things.

There's a reason for both of those. It was/is a safey thing, the gov. makes them do. The idea is, if you have an engine fire, the flames will melt the plastic buttons, the stuff will drop down and cover over fire and choke the fire out

 

I did not know that! That makes complete sense Glad someone has the right answer to the question lol.

 

THanx a lot man, thats totaly cool, i didn't know any of that!

 

actually the stuff I had caught on fire....quick.....but that may be due to the age and amount of grit/whatever mixed in it......I also though it acted as a sound dampener

 

Yeah, I heard the sound deadener one too, but think about it for a min... WHY??

I know we all want quit interiors, thats the reason for the sound deadeners on the inside of firewall, under the carpet, through out car, and heavy rubber mat on back of carpet.
How could the sound from the engine (fan, atl.) come through the hood and into out cars. It couldnt.

Then look at the cars with real scoops or vents in the hoods from the factory. What put an opening in the hood thats gonna let sound pass through, and still put a sound deadener on the bottom of the hood.

That right there don't make sence to me. And it shows me it's not meant as a sound or heat blocker