question about dynamat - The 1947 - Present Chevrolet & GMC Truck Message Board Network

frost89434 · 03-19-2005, 01:07 AM

I was thinking of not replacing the 3 pads on my firewall and instead I was going to use dynamat. Would this be ok or am I still going to need the firewall pads? Any help would be great. Thanks JIM

muddpile · 03-19-2005, 01:45 AM

I'd do the dynamat then put the pads back or add some other padding. The more deadener the better, and dynamat and padding do different jobs. Dynamat stops panel vibration and resonance, while the padding acts as a sound absorber.

frost89434 · 03-19-2005, 01:53 AM

Thanks for the info. I was kind of hoping to be able to do without the padding. The new pads are over a 100 bucks. I can dynamat the whole cab for about 130 or so. I guess I am just being cheap.

kaycee · 03-19-2005, 10:58 AM

$100 WHERE U BUYING IT? I just got my pad's for $50 drvs. side, center and passed on the pass. side cause the A/C takes up all that space.

frost89434 · 03-19-2005, 12:48 PM

Quote:

Originally Posted by kaycee

$100 WHERE U BUYING IT? I just got my pad's for $50 drvs. side, center and passed on the pass. side cause the A/C takes up all that space.

Where did you get yours?

shifty · 03-19-2005, 06:15 PM

Quote:

Originally Posted by muddpile

I'd do the dynamat then put the pads back or add some other padding. The more deadener the better, and dynamat and padding do different jobs. Dynamat stops panel vibration and resonance, while the padding acts as a sound absorber.

Not to be argumentative, but I think they're basically the same thing .... both products add additional weight to the panel, which not only acts as a sound barrier, but primarily makes the panel heavier leaving it less prone to vibration (which would allow sound transfer, kind of like a passive radiator)

I believe it's all the same concept. I completely agree "the more, the better"

You can never have too much sound deadener anywhere.

mocwon · 03-20-2005, 01:22 AM

I'd just use the Dynamat, in fact, that's exactly what I did. I can't imagine you would need both. The Dynamat absorbs the sound as well as the heat. Mine's not on the road yet so I hope this was a wise choice.

greasemonkey · 03-20-2005, 11:20 AM

I used Brown Bread and firewall pads, I only used one layer of BB but I might put some more on the floor and rear wall.

kaycee · 03-20-2005, 01:31 PM

Got mine from Kenny's Truck's out of Oklahoma www.kennystrucks.com

1STtimePRo'71 · 03-20-2005, 04:05 PM

Accumat is cheaper than dynamat and I just bought the rest of what WalMart had on the self here for around 60 bucks. I got 8 packages of it and 1 pack will do the whole inside of a door. Just my .02 on the "cheaper" thing.

chevydog66 · 03-20-2005, 04:12 PM

I used FatMat in my 66 Chevelle, that I purchased thru ebay for $100 for 100sq. ft. I haven't drove the car yet to notice a difference, I'm just stating that there are other alternatives to Dynamat.

70short · 03-20-2005, 04:39 PM

1STtimePRo'71 How many square feet did you get??

Gary

Kid · 03-20-2005, 05:49 PM

I think you should not forget the factory type fire wall pad, or aftermarket carpet insulation.That is needed for heat/ cold insulation . The sound dampener material does nothing for insulation.

03-19-2005, 01:07 AM	#1
frost89434 Registered User Join Date: Nov 2001 Location: sparks, NV Posts: 1,141	question about dynamat I was thinking of not replacing the 3 pads on my firewall and instead I was going to use dynamat. Would this be ok or am I still going to need the firewall pads? Any help would be great. Thanks JIM __________________ 68 short fleet with 71 front clip 2wd jaguar blue 99 chevy ext cab shrtbed z71 loaded 99 chevy swb fleetside(daily driver) Sparks, Nevada

03-19-2005, 01:45 AM	#2
muddpile Registered User Join Date: Dec 2004 Location: Saskatchewan, Canada Posts: 1,371	I'd do the dynamat then put the pads back or add some other padding. The more deadener the better, and dynamat and padding do different jobs. Dynamat stops panel vibration and resonance, while the padding acts as a sound absorber. __________________ 1964 Chevy Short Fleet: Tornado 1972 Chevy C10: Fast Orange Secondaries Wide Open

03-19-2005, 01:53 AM	#3
frost89434 Registered User Join Date: Nov 2001 Location: sparks, NV Posts: 1,141	Thanks for the info. I was kind of hoping to be able to do without the padding. The new pads are over a 100 bucks. I can dynamat the whole cab for about 130 or so. I guess I am just being cheap. __________________ 68 short fleet with 71 front clip 2wd jaguar blue 99 chevy ext cab shrtbed z71 loaded 99 chevy swb fleetside(daily driver) Sparks, Nevada

03-19-2005, 10:58 AM	#4
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,453	$100 WHERE U BUYING IT? I just got my pad's for $50 drvs. side, center and passed on the pass. side cause the A/C takes up all that space. __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60

03-20-2005, 01:22 AM	#7
mocwon Keep On Truckin' Join Date: Mar 2003 Location: Buda, Texas Posts: 1,354	I'd just use the Dynamat, in fact, that's exactly what I did. I can't imagine you would need both. The Dynamat absorbs the sound as well as the heat. Mine's not on the road yet so I hope this was a wise choice. Attached Images __________________ Just Passin' Thru Some projects are like herding cats; others are like putting out fires; this one was like herding cats on fire.....

03-20-2005, 11:20 AM	#8
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	I used Brown Bread and firewall pads, I only used one layer of BB but I might put some more on the floor and rear wall. Attached Images __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

03-20-2005, 01:31 PM	#9
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,453	Got mine from Kenny's Truck's out of Oklahoma www.kennystrucks.com __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60

03-20-2005, 04:05 PM	#10
1STtimePRo'71 Registered User Join Date: Feb 2005 Location: Lake Crystal, MN Posts: 656	Accumat is cheaper than dynamat and I just bought the rest of what WalMart had on the self here for around 60 bucks. I got 8 packages of it and 1 pack will do the whole inside of a door. Just my .02 on the "cheaper" thing. __________________ -Cory 1967 2 Wheel Chevy

03-20-2005, 04:12 PM	#11
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	I used FatMat in my 66 Chevelle, that I purchased thru ebay for $100 for 100sq. ft. I haven't drove the car yet to notice a difference, I'm just stating that there are other alternatives to Dynamat. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

03-20-2005, 04:39 PM	#12
70short Registered User Join Date: Sep 2003 Location: Boise ID Posts: 609	1STtimePRo'71 How many square feet did you get?? Gary __________________ "72" Red CORVETTE 4-speed 350 "70" Chevy Short Bed early stages of resto. Edel 600 cfm carb Weiand Stealth Intake HEI shorty Headers 4/2 Drop 295 50R 15 TOYO on 10 inch wide corvette rally rims at all 4 corners. "CHEVY RULES"

03-20-2005, 05:49 PM	#13
Kid Senior Member Join Date: Jun 2002 Location: Kansas Posts: 702	I think you should not forget the factory type fire wall pad, or aftermarket carpet insulation.That is needed for heat/ cold insulation . The sound dampener material does nothing for insulation. __________________ The kid Build threads: 51 Jimmy http://67-72chevytrucks.com/vboard/s...d.php?t=154951 http://67-72chevytrucks.com/vboard/s...d.php?t=219902 http://www.classictrucks.com/feature...uck/index.html 68 C10 http://67-72chevytrucks.com/vboard/s...ad.php?t=50348



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