67/68 Core Support On A 69-72 Frame Q? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**special-K** · 10-25-2010, 01:55 PM

I've never crossed this bridge before.I'm building a '67 GMC-lookin' truck off a '71 frame.I figured the core support mounting kit should be a 67/68 type for the correct bushings to get the right height off the frame.I'm wondering what people do about the bigger holes in the frame brackets on a 69-72,since the 67/68 washers are about the same size as the holes.I figure just find bigger diameter fender washers or make plates.Is there a simple commonly done solution I don't know about?

VA72C10 · 10-25-2010, 01:59 PM

good question and probably FAQ fodder when it's answered

**special-K** · 10-25-2010, 02:04 PM

Anythong can be done,right?

I mean,I could weld the wholes in with correct 67/68 diameter or even pirate brackets off a 67/68.I tend to take the hard road when I could have ask directions for a straight shot.So,here I go! I see a lot of 67/68 clips swapped onto late frame.Tell this lazy boy whatcha do.

jaros44sr · 10-25-2010, 03:41 PM

cut the '69-'72 rubber mounts down to the proper thickness, which is about 3/4" compressed

red69ss · 10-25-2010, 03:44 PM

from what I have read here you are suppose to match the bushings to the frame and not the sheetmetal. 69-72 frame uses 69-72 bushings regardless of sheetmetal.http://67-72chevytrucks.com/vboard/s....php?p=4243502 here's a link to a post on similiar question.

**special-K** · 10-26-2010, 03:29 PM

That one answer that says all supports are the same is wrong.The 69-72 core supports are shorter top to bottom.This is due to the 67/68s having a splash pan,I believe.I've been told by experts to go with what core support you are using.Cutting down the later bushings does sound like a good way to go.It figures I'd end up with 2 67/68 mount kits and no 69-72s.

Schneids · 10-26-2010, 03:56 PM

Not sure if this will help but a 67-68 core support on a 69-72 will work for everything but your headlight alignment and bezel around the headlight. These will be to high, as mentioned because of the 69-72 are shorter top to bottom.

Now ask me I how I know...

Dano69c10 · 10-26-2010, 05:08 PM

If I remember correctly, I built a '71 with a 67/68 front clip and ended using the 71's core support. I think I just drilled out the welds and removed the 69/72 headlight buckets. I might of messed with the mounting bushings, but I don't remember. I used the 67/68 hood latch. I do remember it was no trouble to do. Bolted on the fenders and the hood, I reused the headlight hardware, but had to shorten the adjuster screws.
Dano

**rob32472** · 10-26-2010, 06:30 PM

I put a 68 clip on a 72 frame and used 72 core support bushings with no problems....... sheetmetal lined up perfectly

10-25-2010, 01:55 PM	#1
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	67/68 Core Support On A 69-72 Frame Q? I've never crossed this bridge before.I'm building a '67 GMC-lookin' truck off a '71 frame.I figured the core support mounting kit should be a 67/68 type for the correct bushings to get the right height off the frame.I'm wondering what people do about the bigger holes in the frame brackets on a 69-72,since the 67/68 washers are about the same size as the holes.I figure just find bigger diameter fender washers or make plates.Is there a simple commonly done solution I don't know about? __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

10-25-2010, 01:59 PM	#2
VA72C10 VA72C10 Join Date: Mar 2008 Location: Midlothian, VA Posts: 25,269	Re: 67/68 Core Support On A 69-72 Frame Q? good question and probably FAQ fodder when it's answered __________________ Looking for a 67-72 swb or blazer project in or around VA.

10-25-2010, 02:04 PM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: 67/68 Core Support On A 69-72 Frame Q? Anythong can be done,right? I mean,I could weld the wholes in with correct 67/68 diameter or even pirate brackets off a 67/68.I tend to take the hard road when I could have ask directions for a straight shot.So,here I go! I see a lot of 67/68 clips swapped onto late frame.Tell this lazy boy whatcha do. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

10-25-2010, 03:41 PM	#4
jaros44sr Registered User Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,457	Re: 67/68 Core Support On A 69-72 Frame Q? cut the '69-'72 rubber mounts down to the proper thickness, which is about 3/4" compressed __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

10-25-2010, 03:44 PM	#5
red69ss Burnouts are therapeutic Join Date: Jun 2007 Location: lancaster, south carolina Posts: 852	Re: 67/68 Core Support On A 69-72 Frame Q? from what I have read here you are suppose to match the bushings to the frame and not the sheetmetal. 69-72 frame uses 69-72 bushings regardless of sheetmetal.http://67-72chevytrucks.com/vboard/s....php?p=4243502 here's a link to a post on similiar question. __________________ 1969 CHEVELLE SS 1972 C10 ALMOST DAILY DRIVER 1968 C10 RUSTBUCKET (MISSION IMPOSSIBLE) 1972 PONTIAC LEMANS CONVERTIBLE (WIFE'S CAR) "My wife and I were happy for twenty years. Then we met." - Rodney Dangerfield "The difference between genius and stupidity is that genius has its limits." - Einstein

10-26-2010, 03:29 PM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: 67/68 Core Support On A 69-72 Frame Q? That one answer that says all supports are the same is wrong.The 69-72 core supports are shorter top to bottom.This is due to the 67/68s having a splash pan,I believe.I've been told by experts to go with what core support you are using.Cutting down the later bushings does sound like a good way to go.It figures I'd end up with 2 67/68 mount kits and no 69-72s. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 10-27-2010 at 08:55 AM.

10-26-2010, 03:56 PM	#7
Schneids Registered User Join Date: May 2010 Location: Richmond, VA Posts: 6	Re: 67/68 Core Support On A 69-72 Frame Q? Not sure if this will help but a 67-68 core support on a 69-72 will work for everything but your headlight alignment and bezel around the headlight. These will be to high, as mentioned because of the 69-72 are shorter top to bottom. Now ask me I how I know...

10-26-2010, 05:08 PM	#8
Dano69c10 Senior Member Join Date: Jan 2005 Location: Ontario, Kali Posts: 2,427	Re: 67/68 Core Support On A 69-72 Frame Q? If I remember correctly, I built a '71 with a 67/68 front clip and ended using the 71's core support. I think I just drilled out the welds and removed the 69/72 headlight buckets. I might of messed with the mounting bushings, but I don't remember. I used the 67/68 hood latch. I do remember it was no trouble to do. Bolted on the fenders and the hood, I reused the headlight hardware, but had to shorten the adjuster screws. Dano __________________ '69 Fleet It ain't yours, if you didn't build it!

10-26-2010, 06:30 PM	#9
rob32472 Registered User Join Date: May 2007 Location: dallas ga Posts: 1,504	Re: 67/68 Core Support On A 69-72 Frame Q? I put a 68 clip on a 72 frame and used 72 core support bushings with no problems....... sheetmetal lined up perfectly



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