Grafting frame horns - The 1947 - Present Chevrolet & GMC Truck Message Board Network

paintpyro · 10-12-2010, 01:37 PM

Ok guys, my frame was cut for a rollpan by a PO, just in front of radiator support mounts. I have frame horn sections, going all the way behind the steering box mount area. Where do you think the best place to cut would be? I'll obviously try and reinforce the area, but wondering where the easiest spot would be to line up, and minimize the stress issue on the graft point.
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BB72CHEVKT · 10-12-2010, 01:46 PM

tuned in.. I have a short bed frame and the PO did the same thing

cdowns · 10-12-2010, 03:35 PM

i'd put on as short a piece as possible to restore frame. there is no need to reinforce the very front of the frame horns as there is no load or stress on that frame section other where the bumper is bolted to it

that's why i always reccomend when clipping the frame horns for rollpan to take the cutoffs and tackweld in the frame channel for future repair to stock

ebfabman · 10-12-2010, 03:39 PM

^^^^^^^yup^^^^^^^

can you post some pics....we like pics.........

paintpyro · 10-12-2010, 03:58 PM

Right Earl, like my pics look anything like yours.

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I'll try and snap a few pics when I get home.

paintpyro · 10-13-2010, 11:19 AM

pics, based on Earls request.

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scrapmetalart · 10-13-2010, 11:48 AM

I would just clean up the cuts on your truck & trim the new horns to fit & weld them on. no need to make extra work.

Andy4639 · 10-13-2010, 12:00 PM

Quote:

Originally Posted by scrapmetalart

I would just clean up the cuts on your truck & trim the new horns to fit & weld them on. no need to make extra work.

That is what I would do. The less you cut the less you replace.

nickp51chevy · 10-13-2010, 12:04 PM

Quote:

Originally Posted by scrapmetalart

I would just clean up the cuts on your truck & trim the new horns to fit & weld them on. no need to make extra work.

x3

MAK191 · 10-13-2010, 02:59 PM

I had to replace mine also. Here's what I did.

I just removed the rear two rivet heads on the core support bracket on the inside of the frame. Cut the frame in between the rivets. I left the rear rivet shaft in place. Cut the new frame piece to match. the holes lined up perfect and helped line everything up. Then just welded it all back up. Everything looks square and measures up square, but i have not mounted a bumper cause my truck is in pieces.

I chose this method for two reasons:
1. The rivets would help line up the frame horns.
2. The core support bracket will help brace the frame repair.

paintpyro · 10-13-2010, 03:18 PM

MAK, thats kinda what I was thinkin. That would help clean up the frame rail where the PO torched a whole right in front of the radiator support too.
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MAK191 · 10-13-2010, 03:54 PM

I'm not sure if this is the best way to repair, but it worked for me.
Here is a picture I took during the mock up.

13lazer · 10-13-2010, 07:44 PM

Quote:

Originally Posted by MAK191

I'm not sure if this is the best way to repair, but it worked for me.
Here is a picture I took during the mock up.

nice bevel, that should make a good weld.

scrapmetalart · 10-13-2010, 07:49 PM

Quote:

Originally Posted by MAK191

I had to replace mine also. Here's what I did.

I just removed the rear two rivet heads on the core support bracket on the inside of the frame. Cut the frame in between the rivets. I left the rear rivet shaft in place. Cut the new frame piece to match. the holes lined up perfect and helped line everything up. Then just welded it all back up. Everything looks square and measures up square, but i have not mounted a bumper cause my truck is in pieces.

I chose this method for two reasons:
1. The rivets would help line up the frame horns.
2. The core support bracket will help brace the frame repair.

little more work but a very solid way to go for sure

10-12-2010, 01:37 PM	#1
paintpyro Registered User Join Date: Aug 2001 Location: Santa Fe Springs, CA,USA Posts: 1,579	Grafting frame horns Ok guys, my frame was cut for a rollpan by a PO, just in front of radiator support mounts. I have frame horn sections, going all the way behind the steering box mount area. Where do you think the best place to cut would be? I'll obviously try and reinforce the area, but wondering where the easiest spot would be to line up, and minimize the stress issue on the graft point. Posted via Mobile Device __________________ 70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster

10-12-2010, 01:46 PM	#2
BB72CHEVKT Junior Member Join Date: Mar 2007 Location: Hideaway, TX Posts: 4,950	Re: Grafting frame horns tuned in.. I have a short bed frame and the PO did the same thing __________________ 71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400

10-12-2010, 03:35 PM	#3
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Grafting frame horns i'd put on as short a piece as possible to restore frame. there is no need to reinforce the very front of the frame horns as there is no load or stress on that frame section other where the bumper is bolted to it that's why i always reccomend when clipping the frame horns for rollpan to take the cutoffs and tackweld in the frame channel for future repair to stock __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-12-2010, 03:39 PM	#4
ebfabman Registered User Join Date: Nov 2001 Location: Concord, NC Posts: 2,488	Re: Grafting frame horns ^^^^^^^yup^^^^^^^ can you post some pics....we like pics.........

10-12-2010, 03:58 PM	#5
paintpyro Registered User Join Date: Aug 2001 Location: Santa Fe Springs, CA,USA Posts: 1,579	Re: Grafting frame horns Right Earl, like my pics look anything like yours. Posted via Mobile Device I'll try and snap a few pics when I get home. __________________ 70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster Last edited by paintpyro; 10-12-2010 at 04:42 PM.

10-13-2010, 11:19 AM	#6
paintpyro Registered User Join Date: Aug 2001 Location: Santa Fe Springs, CA,USA Posts: 1,579	Re: Grafting frame horns pics, based on Earls request. Posted via Mobile Device __________________ 70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster Last edited by paintpyro; 10-13-2010 at 11:21 AM.

10-13-2010, 11:48 AM	#7
scrapmetalart Junior Member Join Date: Mar 2007 Location: DAYTON Posts: 505	Re: Grafting frame horns I would just clean up the cuts on your truck & trim the new horns to fit & weld them on. no need to make extra work. __________________ frontstreetcycle on Instagram

10-13-2010, 02:59 PM	#10
MAK191 Registered User Join Date: Nov 2009 Location: FL Posts: 335	Re: Grafting frame horns I had to replace mine also. Here's what I did. I just removed the rear two rivet heads on the core support bracket on the inside of the frame. Cut the frame in between the rivets. I left the rear rivet shaft in place. Cut the new frame piece to match. the holes lined up perfect and helped line everything up. Then just welded it all back up. Everything looks square and measures up square, but i have not mounted a bumper cause my truck is in pieces. I chose this method for two reasons: 1. The rivets would help line up the frame horns. 2. The core support bracket will help brace the frame repair. Last edited by MAK191; 10-13-2010 at 03:08 PM.

10-13-2010, 03:18 PM	#11
paintpyro Registered User Join Date: Aug 2001 Location: Santa Fe Springs, CA,USA Posts: 1,579	Re: Grafting frame horns MAK, thats kinda what I was thinkin. That would help clean up the frame rail where the PO torched a whole right in front of the radiator support too. Posted via Mobile Device __________________ 70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster

10-13-2010, 03:54 PM	#12
MAK191 Registered User Join Date: Nov 2009 Location: FL Posts: 335	Re: Grafting frame horns I'm not sure if this is the best way to repair, but it worked for me. Here is a picture I took during the mock up. Attached Images



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