Jdude540

OK guys I have been considering covering the entire inside of my trans am with some dynamat or some other brand name off e-bay style sound deadener. I was wondering if this would really help with some of the noises and squeks this car makes? Also would it help quiet out my 3-inch exhaust and improve the quality sound of my stereo? Just don't want to spend the money on something thats not really worth it.

LS1 RULZ

In my personal opinion it's a waste of time and money. It costs WAY TOO MUCH for what little benefit it provides.

Usmuscl398

Guy before i bought the car did insulating, i love it, the stock 6in sub hit very hard for stock and 9 years old and squeaks are not herd, but then again i have a hefty lope

shouldaboughtthez

I have done 4 cars and if done right, it will make a world of difference.

94'_Z28

I'm going to have to disagree with that. It's not a waste of time or money. When done right it will cut down on road noise and exaust noise by half or more. On top of that it will make your system sound cleaner and louder. I would suggest using a liquid sound deadener on the floor/roof of your car. The using mats for your doors. I prefer to use Second Skin products, they seem to be on top of the car audio sound deadening industry for the last few years. Dynamat is good stuff, I use it here and there, but it's a bit pricy. Here are a few pics of when I deadened my car... http://www.picturetrail.com/gallery/...55&uid=1612587

mourningyou

unless you specifically buy only dynamat or dynamat extreme, it should not be too expensive to do an entire car. just dynamatting my brothers trunk made a pretty noticeable change in the road noise coming from the rear of the car. it wont improve the sound of your radio, but it will allow you to actually hear it.

i would not be concerned about the expense of the project, but rather the wisdom of adding 100-150 pounds of sound deadening material to a "fast" car :P

94'_Z28

I added maybe 100lbs at most when deadening my car.

mourningyou

i know some drivers would give arms, legs, etc, to be able to toss another 100 pounds :P

but to each his own, i'd do it in a second if i had some boom.

SUMO-Z

I stripped out my interior and used rubberized spray coating (6$) a can. Coated exactly what 94'_Z28 did and also coated the back of ALL my panels. I stripped off the pad from the old carpet and laid it down where it goes and then put the new carpet&pad down on top of all that. It makes a significant difference...Not to worried about going that fast, but it makes your car 3x tighter. I have a 93 with no speaks, no rattles, nadda! As a side benefit, it also keeps your car cooler in the summer and the A/C doesnt work as hard and I imagine it will do the reverse in the winter.

I got the spray rubberized coating (fenderwell undercoating) idea from a big stereo shop. That is what they do for some customers not wanting the big expense of dynamat. But they charge them more than $6 a can

Jdude540

About how many cans do you think it would take to do an entire interior?

SUMO-Z

6 cans just for floor/sail panel area/trunk/
2 cans for backside of interior panels

94'_Z28

Yep you could do undercoating as well. Of couse you won't get as good of a result as Dynamat, Second Skin, or other good sound deadeners, but for $3 a can it's worth doing.