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-   -   Hood distorted? (https://67-72chevytrucks.com/vboard/showthread.php?t=761160)

dracko 04-06-2018 08:22 PM

Hood distorted?
 
Was checking my hood out today with a straight edge and noticed there’s a high spot on each side of the hood directly above where the hood hinges attach. It’s basically at front of the structural brace that goes across the rear of the hood.

Wondering if this should be nice and flat or if they all have a high spot there?

http://i284.photobucket.com/albums/l...psp50spyay.jpg

http://i284.photobucket.com/albums/l...ps2dpu68mj.jpg


http://i284.photobucket.com/albums/l...ps7u3ol9hd.jpg

damnyankee36 04-09-2018 07:12 PM

Re: Hood distorted?
 
I spent days blocking my hood and it looks very similar to yours. I would describe it more of an arc from front to back rather than just a high spot. And that arc was pretty much consistent across the entire hood.

The Rocknrod 04-09-2018 07:55 PM

Re: Hood distorted?
 
Yep.

dracko 04-09-2018 08:49 PM

Re: Hood distorted?
 
Thanks for the reply Yankee, glad to hear it’s nothing out of the ordinary. I did find a chunk of black foam between the brace and the hood (only on the passenger side) that I removed and that made the high spot less severe. ��

damnyankee36 04-09-2018 08:54 PM

Re: Hood distorted?
 
That strip of foam is supposed to be there. Removing it might allow the hood to flatten a bit but it will also keep it from possible oil canning.

The Rocknrod 04-09-2018 09:01 PM

Re: Hood distorted?
 
And you'll be replacing that foam soon. :)

dracko 04-09-2018 09:14 PM

Re: Hood distorted?
 
Well there’s the foam strips between the removable braces that should be there, as it is, but this was a different density foam stuck between the hood and rear cross brace. Only on the PS of the hood. I should’ve taken a picture I guess. Is there supposed to be foam there too?

damnyankee36 04-09-2018 09:33 PM

Re: Hood distorted?
 
Ah, now that, I believe, is not factory. Quite sure.

dracko 04-09-2018 09:35 PM

Re: Hood distorted?
 
Okay right on, I couldn’t find any info on it so figured it was a “custom” mod by a previous owner.

The Rocknrod 04-09-2018 09:52 PM

Re: Hood distorted?
 
1 Attachment(s)
No it's factory. This is the LMC catalog, it's also shown in the factory assembly manual that you should get.
Here is a great thread look through the whole thing. http://67-72chevytrucks.com/vboard/s...d.php?t=607123

dracko 04-09-2018 10:26 PM

Re: Hood distorted?
 
Quote:

Originally Posted by The Rocknrod (Post 8234539)
No it's factory. This is the LMC catalog, it's also shown in the factory assembly manual that you should get.
Here is a great thread look through the whole thing. http://67-72chevytrucks.com/vboard/s...d.php?t=607123

Interesting read, thanks for that. Just when I thought I’d “fixed” the high spot I need to order new foam and put it right back. I honestly don’t know what purpose it serves though. There is no oil can effect on either side without the foams.

The Rocknrod 04-09-2018 10:43 PM

Re: Hood distorted?
 
When your driving around your hood will squeak and it will drive you mad trying to find it from bumper to bumper until you find you need the foam no one told you about.

dracko 04-09-2018 11:00 PM

Re: Hood distorted?
 
That makes sense, definitely spared me the headache. Will be adding the foam kit to my next parts order. Thanks again.

damnyankee36 04-10-2018 06:38 PM

Re: Hood distorted?
 
Quote:

Originally Posted by The Rocknrod (Post 8234539)
No it's factory. This is the LMC catalog, it's also shown in the factory assembly manual that you should get.
Here is a great thread look through the whole thing. http://67-72chevytrucks.com/vboard/s...d.php?t=607123

Ibedamned! It's been so long since I placed my LMC order for the strips, I can't remember if I got those pieces. I'm still not at that stage to install the rubber.

Thanks for the correction!

Pinchecharlie 04-10-2018 08:43 PM

Re: Hood distorted?
 
I've had the unfortunate pleasure of working on several gigantic hoods and I must say these truck hoods are pretty bad even straight. I would think you would have to completely disassemble and shrink the shi@out of it to get rid of the wonk. I don't think they cared much about the hood when they produced these. Not a jab just an observation and bonus that they can pass the body work test easier. Check out the build "sanford" you could tell he slapped that hood with a spoon for awhile. Yours looks beautiful to me!

dracko 11-09-2018 10:22 AM

Re: Hood distorted?
 
Quote:

Originally Posted by Pinchecharlie (Post 8235350)
I've had the unfortunate pleasure of working on several gigantic hoods and I must say these truck hoods are pretty bad even straight. I would think you would have to completely disassemble and shrink the shi@out of it to get rid of the wonk. I don't think they cared much about the hood when they produced these. Not a jab just an observation and bonus that they can pass the body work test easier. Check out the build "sanford" you could tell he slapped that hood with a spoon for awhile. Yours looks beautiful to me!

Haha yeah I agree some are pretty rough. This truck actually came from Bozeman and although I’ve replaced most of the Sheetmetal, the hood is salvageable. I had a “autobody guy” come by and some pulling/shrinking and those spots are just gonna need a thin skim of filler.

I was recommended to use a dynamat material between the brace and hood instead of that cheap grey foam strips the vendors sell. Anybody tried this around here? I’m not sure how much shock absorption it’d do?

nsb29 11-09-2018 07:27 PM

Re: Hood distorted?
 
My hood is absolutely perfect when it’s up when you close it well now that’s another story The inner Hood brace flexes and pushes up on the inside of the hood from the tension of the springs

damnyankee36 11-09-2018 08:02 PM

Re: Hood distorted?
 
Quote:

Originally Posted by dracko (Post 8380812)
I was recommended to use a dynamat material between the brace and hood instead of that cheap grey foam strips the vendors sell. Anybody tried this around here? I’m not sure how much shock absorption it’d do?

Hmmm, I wonder if the Dynamat will keep compressing thereby eventually not supporting the hood? I don't know if the typical foam rubber strips would be any better. I think any kind of soft rubber, (not a foam type), would be better.

Quote:

Originally Posted by nsb29 (Post 8381074)
My hood is absolutely perfect when it’s up when you close it well now that’s another story The inner Hood brace flexes and pushes up on the inside of the hood from the tension of the springs

I hope that's not the case with my hood. I did all the body work and blocking on saw horses. No hinge springs were pushing up on it. It had a little bit of a curve/bulge even then.

dracko 11-09-2018 08:10 PM

Re: Hood distorted?
 
Quote:

Originally Posted by nsb29 (Post 8381074)
My hood is absolutely perfect when it’s up when you close it well now that’s another story The inner Hood brace flexes and pushes up on the inside of the hood from the tension of the springs

I’ve still got mine mounted on the truck, mainly due to the fact that I can’t take it off solo, but I had to do a thin smear beside the braces because they are definitely pressing up on the hood a tad. Gonna order up some new foam strips before I do any final blocking..

Damnyankee, ya I agree the material seems too dense for this purpose and prob wouldn’t be much for absorbing vibrations.

nsb29 11-09-2018 10:19 PM

Re: Hood distorted?
 
My plan is to use 30 pound felt paper not ticket enough to cause any more distortion but it won’t squeak

dracko 11-09-2018 10:38 PM

Re: Hood distorted?
 
Quote:

Originally Posted by nsb29 (Post 8381162)
My plan is to use 30 pound felt paper not ticket enough to cause any more distortion but it won’t squeak

That’s a solid idea for sure. That’d work great for the rear and front corner pads but not really sure about the long center braces. Let me know how it works. I just ordered the foams for $40 so I’m invested now, haha.

nsb29 11-10-2018 09:32 AM

Re: Hood distorted?
 
I use the foam pads for the center support and the front But there was no room in the back where I planned to use the 30 pound felt the other pieces were installed before I block the hood out if I hadn’t known that the back support flex that much I wouldn’t have clearance it but it’s painted now lol

dracko 11-10-2018 10:56 AM

Re: Hood distorted?
 
Quote:

Originally Posted by nsb29 (Post 8381337)
I use the foam pads for the center support and the front But there was no room in the back where I planned to use the 30 pound felt the other pieces were installed before I block the hood out if I hadn’t known that the back support flex that much I wouldn’t have clearance it but it’s painted now lol

Yeah I’ll definitely be using some roofing paper back in the corners, the thinner the material in there the better to minimize the brace hump. I might even just use some butcher paper.


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