Frame repair and 67 p/s conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

oldspowered67C10 · 03-12-2008, 07:23 AM

Hey everyone, so I have the body off my truck so I decided that Id fix my frame and correctly install a 69-later sytle power steering box. When I first got the truck someone had installed a car power steering box. Since on a car the box mounts to the inside of the frame rail they welded a piece of 6"x6" square tube to the frame rail and installed the box inside the tube. I guess they wanted a quicker ratio box. Reguardless of why they did it they beat the hell out of the frame rail to make the tube sit flush.

After looking at the damage I decided it would be best to replace the entire side of the frame rail in that section. Also my frame doesnt have the "bump in" to clear the power steering box so I figured I could intergrate the "bump in" into the new piece. Heres as far as I got before running out of welding wire.

*Shane* · 03-12-2008, 07:30 AM

looks good!

shifty · 03-12-2008, 08:44 AM

looks really good. you gonna fish plate the inside for strength?

*Shane* · 03-12-2008, 08:53 AM

what the hell is a "fish plate" ???

shifty · 03-12-2008, 08:58 AM

(Thanks Glock35ipsc, thanks Google site search!

)

shifty · 03-12-2008, 08:59 AM

I guess the term isn't used as much as I thought. I didn't get a ton of hits here at the site, but ... this is what pulled up, so you know I'm not a nutbag (I just read too much): http://www.google.com/search?sourcei...vytrucks%2ecom

*Shane* · 03-12-2008, 09:00 AM

i guess, but i've never seen a "fish plate" on the inside of an original frame ... can't really see a purpose for it ...

shifty · 03-12-2008, 09:07 AM

I read you're supposed to use them any time you cut into a frame and weld a patch. So, in this case, from all the fab crap I've been reading, he would want to add at least a diamond or oval shaped fish plate on the inside of the framerail at each of the vertical seams shown in the picture.

I am not a fab guy, I'm just interested, so I can't say (that's why I asked!)

oldspowered67C10 · 03-12-2008, 10:16 AM

Quote:

looks really good. you gonna fish plate the inside for strength?

I was thinking that rather than a fish plate welded parallel Id make some gussets that weld to the plate perpindicular and also weld to the existing frame top and bottom, well see how it goes.

oldspowered67C10 · 03-17-2008, 05:52 AM

Finished up today, got it all welded and the welds dressed on the outside. Ended up making 2 gusset plates for rienforcement and it looks like itll hold.

shifty · 03-18-2008, 05:57 AM

looks really good!

03-12-2008, 07:23 AM	#1
oldspowered67C10 Registered User Join Date: Jan 2006 Location: Cherry Valley,Ca Posts: 468	Frame repair and 67 p/s conversion Hey everyone, so I have the body off my truck so I decided that Id fix my frame and correctly install a 69-later sytle power steering box. When I first got the truck someone had installed a car power steering box. Since on a car the box mounts to the inside of the frame rail they welded a piece of 6"x6" square tube to the frame rail and installed the box inside the tube. I guess they wanted a quicker ratio box. Reguardless of why they did it they beat the hell out of the frame rail to make the tube sit flush. After looking at the damage I decided it would be best to replace the entire side of the frame rail in that section. Also my frame doesnt have the "bump in" to clear the power steering box so I figured I could intergrate the "bump in" into the new piece. Heres as far as I got before running out of welding wire. Attached Images

03-12-2008, 07:30 AM	#2
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Re: Frame repair and 67 p/s conversion looks good!

03-12-2008, 08:44 AM	#3
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	Re: Frame repair and 67 p/s conversion looks really good. you gonna fish plate the inside for strength? __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

03-12-2008, 08:53 AM	#4
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Re: Frame repair and 67 p/s conversion what the hell is a "fish plate" ???

03-12-2008, 08:58 AM	#5
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	Re: Frame repair and 67 p/s conversion (Thanks Glock35ipsc, thanks Google site search! ) __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

03-12-2008, 08:59 AM	#6
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	Re: Frame repair and 67 p/s conversion I guess the term isn't used as much as I thought. I didn't get a ton of hits here at the site, but ... this is what pulled up, so you know I'm not a nutbag (I just read too much): http://www.google.com/search?sourcei...vytrucks%2ecom __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

03-12-2008, 09:00 AM	#7
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Re: Frame repair and 67 p/s conversion i guess, but i've never seen a "fish plate" on the inside of an original frame ... can't really see a purpose for it ...

03-12-2008, 09:07 AM	#8
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	Re: Frame repair and 67 p/s conversion I read you're supposed to use them any time you cut into a frame and weld a patch. So, in this case, from all the fab crap I've been reading, he would want to add at least a diamond or oval shaped fish plate on the inside of the framerail at each of the vertical seams shown in the picture. I am not a fab guy, I'm just interested, so I can't say (that's why I asked!) __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

03-17-2008, 05:52 AM	#10
oldspowered67C10 Registered User Join Date: Jan 2006 Location: Cherry Valley,Ca Posts: 468	Re: Frame repair and 67 p/s conversion Finished up today, got it all welded and the welds dressed on the outside. Ended up making 2 gusset plates for rienforcement and it looks like itll hold. Attached Images

03-18-2008, 05:57 AM	#11
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,373	Re: Frame repair and 67 p/s conversion looks really good! __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.



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