Thoughts on hood insulation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dan42 · 12-31-2012, 01:23 AM

Does anyone have any thoughts on hood inuslation? Most of us probably don't run any (I don't) but I would like to know your thoughts if you do; what you are running how you installed it, how much it cuts back on noise. I am considering installing some on my '67.

AirSpeed · 12-31-2012, 11:07 AM

You might have better luck with some self adhesive stuff like Dynomat, I bet it would make a big difference in reducing engine noise, our hoods transmit a lot of sound, even with new cushions between the braces and hood. I think Dynomat would work better than insulation and you won't have to figure out how to attach it.
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PanelDeland · 12-31-2012, 02:47 PM

If you're looking to quieten down underhood noise,you might consider having the inner wheelwells and underside of the hood bedlined.That should last well and cut down a lot of noise and the tinny sound.

Tinkermc · 12-31-2012, 06:07 PM

I did dynomat and am very happy I would say bed liner on the tubs would be good money spent.

**SactoJim** · 01-01-2013, 02:22 PM

Hey there Dan!......how things been?

I did the bottom of mine and think it was a good move.....really quiets down noise from engine, gives a real nice "thud" when you close it, and it also minimizes hood shake (driving down the road and you see the top sheet metal of your hood wiggling around).

I used a single side foil back insulation and attached it using a 3M hood insulation spray glue......sticking real well after 3 years. Also used something called stack tape around the perimeter....it's a foil back very sticky tape used in the HVAC industry.

I did it in 2 pieces with the seam under one of the braces....took some larger sheets of paper and cut a couple templates. Just slid the cut pieces of insulation under the braces which was nice and snug. I also ran an aluminum strap along the hood ridge just to insure the insulation stayed up.

After I got it all up, I didn't like how reflective it was and took a scotchbrite pad and scuffed it all down real well to dull it up......looked better that way to me. I think it ended up looking pretty good and was pretty inexpensive.

12-31-2012, 01:23 AM	#1
dan42 Registered User Join Date: Feb 2007 Location: Cali Central Coast Posts: 5,191	Thoughts on hood insulation Does anyone have any thoughts on hood inuslation? Most of us probably don't run any (I don't) but I would like to know your thoughts if you do; what you are running how you installed it, how much it cuts back on noise. I am considering installing some on my '67. __________________ '67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD Click here to support the board Philippians 4: 6-7

12-31-2012, 11:07 AM	#2
AirSpeed Registered User Join Date: Jul 2007 Location: Fall River California Posts: 2,026	Re: Thoughts on hood insulation You might have better luck with some self adhesive stuff like Dynomat, I bet it would make a big difference in reducing engine noise, our hoods transmit a lot of sound, even with new cushions between the braces and hood. I think Dynomat would work better than insulation and you won't have to figure out how to attach it. Posted via Mobile Device __________________ http://smg.photobucket.com/albums/v655/aaronhero/

12-31-2012, 02:47 PM	#3
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: Thoughts on hood insulation If you're looking to quieten down underhood noise,you might consider having the inner wheelwells and underside of the hood bedlined.That should last well and cut down a lot of noise and the tinny sound. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

12-31-2012, 06:07 PM	#4
Tinkermc Registered User Join Date: Jul 2011 Location: Farmville, Va Posts: 3,026	Re: Thoughts on hood insulation I did dynomat and am very happy I would say bed liner on the tubs would be good money spent.

01-01-2013, 02:22 PM	#5
SactoJim Registered User Join Date: Oct 2005 Location: Sacramento, CA Posts: 1,970	Re: Thoughts on hood insulation Hey there Dan!......how things been? I did the bottom of mine and think it was a good move.....really quiets down noise from engine, gives a real nice "thud" when you close it, and it also minimizes hood shake (driving down the road and you see the top sheet metal of your hood wiggling around). I used a single side foil back insulation and attached it using a 3M hood insulation spray glue......sticking real well after 3 years. Also used something called stack tape around the perimeter....it's a foil back very sticky tape used in the HVAC industry. I did it in 2 pieces with the seam under one of the braces....took some larger sheets of paper and cut a couple templates. Just slid the cut pieces of insulation under the braces which was nice and snug. I also ran an aluminum strap along the hood ridge just to insure the insulation stayed up. After I got it all up, I didn't like how reflective it was and took a scotchbrite pad and scuffed it all down real well to dull it up......looked better that way to me. I think it ended up looking pretty good and was pretty inexpensive. __________________ 72 Cheyenne SWB Fleet Nut & bolt frame off in progress...99.9999% - supercharged 383 - 4 wheel discs - relocated fuel tank - My Build Thread



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