New Hood to Cowl Seal/Raised Hood - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**72restorationvirgin** · 02-02-2013, 07:03 PM

I know there are several threads on this but I just installed a new cowl seal and stainless trash guards. I know some say to try new hinges and springs but I press down on the back of the hood when it's closed with all my weight and it still doesn't go flush. Will new hood hinges and springs really be strong enough to hold it down or make a difference? I tried adjusting the hood hinges but it make's no difference. It doesn't help I got the POS LMC cowl seal.....

So should I just try to get a new seal from a vendor (Classic HeartBeat) or try new hood hinges/springs???

asolde · 02-02-2013, 08:20 PM

Your hood to cowl seal should be a V shaped seal not L shaped. Rock auto has the correct seal for our trucks.

AirSpeed · 02-02-2013, 08:26 PM

Mine did the same thing, I just took it off. I can't see any real need for it anyway, unless it does something I haven't thought of?
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**leddzepp** · 02-02-2013, 08:31 PM

You can bring the back of the hood down by adjusting the hinges. Open the hood, loosen the hinge bolts that attach to the fenders. Then, push the hood further up to rotate the hinges back. Tighten the bolts, keeping the hinges in that position (it is easier to do this with two people, so you can hold the setting) Close the hood carefully...you will see that this "pulls" the back of the hood down when shut. If you over adjust, the hood will scrape the cowl, or go down too far past the cowl. If you play with this adjustment, you can dial it in.

**72restorationvirgin** · 02-02-2013, 08:39 PM

Quote:

Originally Posted by leddzepp

You can bring the back of the hood down by adjusting the hinges. Open the hood, loosen the hinge bolts that attach to the fenders. Then, push the hood further up to rotate the hinges back. Tighten the bolts, keeping the hinges in that position (it is easier to do this with two people, so you can hold the setting) Close the hood carefully...you will see that this "pulls" the back of the hood down when shut. If you over adjust, the hood will scrape the cowl, or go down too far past the cowl. If you play with this adjustment, you can dial it in.

Ok I'll try adjusting it again. Thx
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AirSpeed · 02-02-2013, 09:01 PM

I tried to adjust mine as you describe with no luck, I'm thinking my hinges or springs are worn out. Would that be the problem? I don't see and wear but can't really test the springs.
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**72restorationvirgin** · 02-02-2013, 09:07 PM

Quote:

Originally Posted by AirSpeed

I tried to adjust mine as you describe with no luck, I'm thinking my hinges or springs are worn out. Would that be the problem? I don't see and wear but can't really test the springs.
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Well I'm no expert. That's just what I read in some past threads but I have no clue.
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AirSpeed · 02-02-2013, 09:14 PM

I noticed the brace the on the hood where the hinges mount flexes a lot while opening and closing the hood, I wonder if the brace has bent over the years? My 72 hood fits flush, that's without the seal, my 69 sticks up in the back without the seal. The hinges in my 69 don't seem to have any play and the springs seem strong when opening the hood. I have the hinges all the way down as well. When I repaint the 69 I'm going to try to mess with the brace and see if I can get the hood to seat.
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jhwkns · 02-02-2013, 11:04 PM

When it's cold out, try relaxing the seal with a heat gun. This works for door seals too.

**derotoreut** · 02-02-2013, 11:33 PM

Quote:

Originally Posted by leddzepp

You can bring the back of the hood down by adjusting the hinges. Open the hood, loosen the hinge bolts that attach to the fenders. Then, push the hood further up to rotate the hinges back. Tighten the bolts, keeping the hinges in that position (it is easier to do this with two people, so you can hold the setting) Close the hood carefully...you will see that this "pulls" the back of the hood down when shut. If you over adjust, the hood will scrape the cowl, or go down too far past the cowl. If you play with this adjustment, you can dial it in.

X2. Had same issue with mine. Need to take time to adjust hinges. Be patient and get the help of someone.

Sammy · 02-03-2013, 09:07 AM

Adjustment is first option of course. But elongated rivets in the hinge can cause this also n very hard to see. Using the correct seal then the adjustment on the hinge is the first two steps.

**72restorationvirgin** · 02-04-2013, 03:45 AM

Anyone know the point for the hood to cowl seal??? Does it matter if it's on or off???
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**hilljob26** · 02-04-2013, 05:35 AM

i think it is just to minimize the elements from getting through

SS Tim · 02-04-2013, 06:01 AM

Quote:

Originally Posted by 72restorationvirgin

Anyone know the point for the hood to cowl seal??? Does it matter if it's on or off???
Posted via Mobile Device

It is to help prevent engine compartment fumes from entering the cabin air intake plenum.

**RenoKeene** · 02-05-2013, 01:20 PM

I think this is a common problem on these trucks. My hinges are adjusted as far as they go and are solid pieces, the seal is NOS so the only cure on my truck is to elongate the holes in the hinges.....someday, but its ok for now.

02-02-2013, 07:03 PM	#1
72restorationvirgin Active Member Join Date: Nov 2012 Location: Grand Rapids. MI Posts: 156	New Hood to Cowl Seal/Raised Hood I know there are several threads on this but I just installed a new cowl seal and stainless trash guards. I know some say to try new hinges and springs but I press down on the back of the hood when it's closed with all my weight and it still doesn't go flush. Will new hood hinges and springs really be strong enough to hold it down or make a difference? I tried adjusting the hood hinges but it make's no difference. It doesn't help I got the POS LMC cowl seal..... So should I just try to get a new seal from a vendor (Classic HeartBeat) or try new hood hinges/springs??? Attached Images __________________ 67 C20 283/4 Speed

02-02-2013, 08:20 PM	#2
asolde Registered User Join Date: Apr 2012 Location: Henderson Nevada Posts: 804	Re: New Hood to Cowl Seal/Raised Hood Your hood to cowl seal should be a V shaped seal not L shaped. Rock auto has the correct seal for our trucks.

02-02-2013, 08:26 PM	#3
AirSpeed Registered User Join Date: Jul 2007 Location: Fall River California Posts: 2,026	Re: New Hood to Cowl Seal/Raised Hood Mine did the same thing, I just took it off. I can't see any real need for it anyway, unless it does something I haven't thought of? Posted via Mobile Device __________________ http://smg.photobucket.com/albums/v655/aaronhero/

02-02-2013, 08:31 PM	#4
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,036	Re: New Hood to Cowl Seal/Raised Hood You can bring the back of the hood down by adjusting the hinges. Open the hood, loosen the hinge bolts that attach to the fenders. Then, push the hood further up to rotate the hinges back. Tighten the bolts, keeping the hinges in that position (it is easier to do this with two people, so you can hold the setting) Close the hood carefully...you will see that this "pulls" the back of the hood down when shut. If you over adjust, the hood will scrape the cowl, or go down too far past the cowl. If you play with this adjustment, you can dial it in. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

02-02-2013, 09:01 PM	#6
AirSpeed Registered User Join Date: Jul 2007 Location: Fall River California Posts: 2,026	Re: New Hood to Cowl Seal/Raised Hood I tried to adjust mine as you describe with no luck, I'm thinking my hinges or springs are worn out. Would that be the problem? I don't see and wear but can't really test the springs. Posted via Mobile Device __________________ http://smg.photobucket.com/albums/v655/aaronhero/

02-02-2013, 09:14 PM	#8
AirSpeed Registered User Join Date: Jul 2007 Location: Fall River California Posts: 2,026	Re: New Hood to Cowl Seal/Raised Hood I noticed the brace the on the hood where the hinges mount flexes a lot while opening and closing the hood, I wonder if the brace has bent over the years? My 72 hood fits flush, that's without the seal, my 69 sticks up in the back without the seal. The hinges in my 69 don't seem to have any play and the springs seem strong when opening the hood. I have the hinges all the way down as well. When I repaint the 69 I'm going to try to mess with the brace and see if I can get the hood to seat. Posted via Mobile Device __________________ http://smg.photobucket.com/albums/v655/aaronhero/

02-02-2013, 11:04 PM	#9
jhwkns Registered Cruiser Join Date: May 2002 Location: Las Vegas NV Posts: 2,230	Re: New Hood to Cowl Seal/Raised Hood When it's cold out, try relaxing the seal with a heat gun. This works for door seals too. __________________ I intend to live forever. So far, so good.

02-03-2013, 09:07 AM	#11
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: New Hood to Cowl Seal/Raised Hood Adjustment is first option of course. But elongated rivets in the hinge can cause this also n very hard to see. Using the correct seal then the adjustment on the hinge is the first two steps. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

02-04-2013, 03:45 AM	#12
72restorationvirgin Active Member Join Date: Nov 2012 Location: Grand Rapids. MI Posts: 156	Re: New Hood to Cowl Seal/Raised Hood Anyone know the point for the hood to cowl seal??? Does it matter if it's on or off??? Posted via Mobile Device __________________ 67 C20 283/4 Speed

02-04-2013, 05:35 AM	#13
hilljob26 Registered User Join Date: Dec 2004 Location: Gypsum Kansas 67448 Posts: 1,681	Re: New Hood to Cowl Seal/Raised Hood i think it is just to minimize the elements from getting through __________________ 21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343

02-05-2013, 01:20 PM	#15
RenoKeene Florida Edition Join Date: Oct 2010 Location: Fruitland Park, FL Posts: 4,029	Re: New Hood to Cowl Seal/Raised Hood I think this is a common problem on these trucks. My hinges are adjusted as far as they go and are solid pieces, the seal is NOS so the only cure on my truck is to elongate the holes in the hinges.....someday, but its ok for now. __________________ 70 GMC Short Stepside "Rose"-An American Beauty: Factory 402/TH400, AM/FM, AC, Tilt, Tach, Buckets, Posi, PS, PB, 3-5 Drop, Complete Resto-Rod 67 C-20 Slant Back Wrecker "Mad Max" 67 C-10 Ratrod "Step-N-Wolf" 71 Serro Scotty Sportsman camper "Scotty" 97 LT1 Z28 "The Hornet" Link to more pics of "Rose" http://67-72chevytrucks.com/vboard/a...p?albumid=1684 Check out my "Cheap Tricks" thread and add to it if you can, lots of good info there. http://67-72chevytrucks.com/vboard/s...d.php?t=489394



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