Why are my floor pans getting so hot?

[OutrnNAScaR14]

1979 Camaro sbc350 Long tube headers 2.5in exhaust.

I've recently got my car on the road and after driving for 10-15 minutes the floor pans are unbelievably hot. My girlfriend can barely keep her feet on them when wearing sandles.

Now, I have rattle trap (dyna mat) throughout interior and double layered on passenger side, and recently wrap my exhaust under the floorpans with header wrap. There isn't much of a difference with that. My exhaust isn't super close to the pans either they're probaby 3-4 inches away.


Any ideas? I guess make a heat shield would help put.

[dontlifttoshift]

No carpet or insulation? _____mat type products do not really help much for heat.

[OutrnNAScaR14]

I haven't installed the carpet yet. But I have no insulation. Ill buy some insulation if it will really make a difference but it gets HOT in chere! I figured the mat would do good against heat but I guess not.

[jprewitt]

Also check your timing to make sure it's not retarded too much which can cause high egt.

[dontlifttoshift]

Insulation and carpet will help tremendously. I have used and been very happy with Under Carpet Lite from DEI https://www.designengineering.com/category/catalog/boom-mat-acoustical-products/under-carpet-lite

[OutrnNAScaR14]

Never thought about timing and I will check out that insulation. Thanks for the ideas Gentlemen.

[Blevinator]

I sprayed the bottom of my car with lizard skin ceramic coating
Dynamat itself does nothing to reject heat
Dynamat has a product called Dynaliner which I have used before with great results
Dynaliner installs directly over Dynamat and molds easily into place
No adhesive
I will be using Dynaliner for my floor pans

[LemonTwisted]

B-Quiet Ultimate (http://b-quiet.com/products-3/b-quiet-ultimate/) works good as a sound deadener and heat suppressor and it's cheaper than DynaMat.

[dontlifttoshift]

I used to use dynaliner. The UnderCarpet is easier to work with, less money, more efficient, and doesn't collapse under my heel and leave a permanent dimple in the carpet.

[BMR Sales]

Not a big Fan of Header Wrap - it will rot out your Headers Fast! Jet-Hot Coatings is my choice!