LWB to SWB conversion: bumper bracket locations - The 1947 - Present Chevrolet & GMC Truck Message Board Network

SchreinerM · 11-13-2022, 10:49 AM

Years ago I shortened my 1968 LWB truck using the instructions I found on this site. Now I'm finally back to working on the project and realized the cutting process removed the bumper bracket mounting holes. Does anyone have any instructions \ photos that would help out?

Thanks!

1967-C10 · 11-14-2022, 11:47 AM

transfer cut off holes ?

SCOTI · 11-14-2022, 04:59 PM

Short of using the original cut off pieces/ends as a good template, I would mount the brackets to the bumper & snug them down enough to loosely 'install' the bumper on the rails. Use a jack or some sort of cribbing to set the bumper where you feel it looks right to/for you & then mark the holes for drilling.

This is how I'm doing my '64 (the body is actually sitting on a '68 lwb frame that was cut down to swb dimensions w/some additional mods). I even modified the bumper brackets some to work 'better' for my needs.

If you cut the frame down, this approach will be easy enough to get the bumper hung.

**Jason Banks** · 11-14-2022, 06:02 PM

I made a drawing from my cut offs for you. This is passenger side, but drivers is mirrored....

Funny enough, on the 1968 that I cut, it had the holes for the bumper brackets already present after cutting the 8? inches off the back of the frame. So, I didn't need to drill new ones.

I'm sure someone else has a drawing posted on this message board for these holes, but my quick search couldn't find one.

**CAMAROBOY68SS** · 11-14-2022, 06:29 PM

Quote:

Originally Posted by Jason Banks

I made a drawing from my cut offs for you. This is passenger side, but drivers is mirrored....

Funny enough, on the 1968 that I cut, it had the holes for the bumper brackets already present after cutting the 8? inches off the back of the frame. So, I didn't need to drill new ones.

I'm sure someone else has a drawing posted on this message board for these holes, but my quick search couldn't find one.

yep my 68 frame was like that. So was a 71 and a 72 that we have cut down in the past. The holes were already there.

blake9397 · 11-14-2022, 07:13 PM

I believe there are templates for this very thing. I think Brother's trucks manufactures them.

SchreinerM · 11-18-2022, 06:58 PM

Jason - thanks for the sketch!

Based on the other posts, it sounds like the holes should still be in my frame even though it’s shortened. I wonder if I have the wrong brackets. I took a picture, but I’m not rue how to post it.
Posted via Mobile Device

11-13-2022, 10:49 AM	#1
SchreinerM Registered User Join Date: Oct 2006 Location: Oshkosh, WI Posts: 101	LWB to SWB conversion: bumper bracket locations Years ago I shortened my 1968 LWB truck using the instructions I found on this site. Now I'm finally back to working on the project and realized the cutting process removed the bumper bracket mounting holes. Does anyone have any instructions \ photos that would help out? Thanks!

11-14-2022, 11:47 AM	#2
1967-C10 Registered User Join Date: Mar 2022 Location: Round Rock Texas Posts: 104	Re: LWB to SWB conversion: bumper bracket locations transfer cut off holes ?

11-14-2022, 04:59 PM	#3
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,915	Re: LWB to SWB conversion: bumper bracket locations Short of using the original cut off pieces/ends as a good template, I would mount the brackets to the bumper & snug them down enough to loosely 'install' the bumper on the rails. Use a jack or some sort of cribbing to set the bumper where you feel it looks right to/for you & then mark the holes for drilling. This is how I'm doing my '64 (the body is actually sitting on a '68 lwb frame that was cut down to swb dimensions w/some additional mods). I even modified the bumper brackets some to work 'better' for my needs. If you cut the frame down, this approach will be easy enough to get the bumper hung. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

11-14-2022, 06:02 PM	#4
Jason Banks Senior Member Join Date: Dec 1999 Location: TX Posts: 1,528	Re: LWB to SWB conversion: bumper bracket locations I made a drawing from my cut offs for you. This is passenger side, but drivers is mirrored.... Funny enough, on the 1968 that I cut, it had the holes for the bumper brackets already present after cutting the 8? inches off the back of the frame. So, I didn't need to drill new ones. I'm sure someone else has a drawing posted on this message board for these holes, but my quick search couldn't find one. Attached Images

11-14-2022, 07:13 PM	#6
blake9397 Registered User Join Date: Sep 2022 Location: Keller, Texas Posts: 34	Re: LWB to SWB conversion: bumper bracket locations I believe there are templates for this very thing. I think Brother's trucks manufactures them.

11-18-2022, 06:58 PM	#7
SchreinerM Registered User Join Date: Oct 2006 Location: Oshkosh, WI Posts: 101	Re: LWB to SWB conversion: bumper bracket locations Jason - thanks for the sketch! Based on the other posts, it sounds like the holes should still be in my frame even though it’s shortened. I wonder if I have the wrong brackets. I took a picture, but I’m not rue how to post it. Posted via Mobile Device



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