How can I tell if I have the correct core support for my 68 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jugernot · 02-26-2006, 08:16 PM

I recall reading somewhere that there was a difference between the 67-68 core supports and the 69-72 core supports. Pic would be great.

junkyardjohn · 02-26-2006, 08:40 PM

THE EAZIEST WAY THAT I KNOW OF IS TO LOOK ALONG THE BOTTOM FOR THE WELD NUTS FOR THE GRAVEL SHEILD. THEY WERE A 67-68 ONLY & THEY WON'T BE ON A 69-72 RAD. SUPPORT. JOHN

THERE ARE SEVERAL OTHER DIFFERENCES & THEY ARE NOT INTERCHANGABLE. I USE THIS METHOD FOR IDENTIFING THEM ONLY. JOHN

Frizzle Fry · 02-26-2006, 08:50 PM

Can they be converted? I knew they were different, but what makes them incompatable?

70chevyfreak · 02-26-2006, 10:40 PM

If You Look On The Headlight Socket Welded To The Support There Is A Year Date On It. You Might Have To Clean The Crud Off First.

TEXAS 68 · 02-26-2006, 10:43 PM

I just went through this on mine, 69-up core supports had headlight buckets spot welded to the support.

Bob Moore · 02-26-2006, 10:54 PM

The biggest difference is the in the headlight mounting area. The 67/68 headlight buckets mount direct to the core while 69-72 core supports have brackets spotwelded to the core for the buckets. I should add this if for Chevys.

I think you can convert a 67/68 to a 69/72 core by adding the headlight bucket brackets but there are some differences in going backward from a 69/72 to 67/68. The stamping was changed to not roll the edge of the headlight hole out of the way like the 67/68.

The nuts that John talks about are another difference. The lower valance was used only in 67/68. Chevy and GMC both used the valance. In 69 it was eliminated in both Chev and GMC. I think you could get by without it for all but a serious retoration 67/68.

Another very minor difference is that early 67 core supports do not have the captured nut for mounting the dual note horn behind the left headlight. I am not sure when GM added this option and thus the captured nut.

These are the biggest differences I have found but there may others I am not aware of.

Hope this helps. Any other questions or comments please post them.

rmurray25 · 02-27-2006, 02:30 AM

I don't have a picture of the 67-68 but here is a sample of what mine on my 69 looks like. Hope this helps.

jugernot · 02-27-2006, 05:30 AM

There is a ebay item that says it is a 67-68. Is this what I should be looking for?

http://cgi.ebay.com/ebaymotors/1967-...QQcmdZViewItem

TEXAS 68 · 02-27-2006, 08:21 AM

That one is for 67-68 Chevy,not GMC

sixty8c10 · 02-28-2006, 07:50 AM

only thing i can tell you is that if you want to use a 4core radiator the support in the ebay pic will have to be modified slightly

72MARIO · 02-28-2006, 11:28 AM

You Can NOT modify a 69-72 to fit a 67-68. The headlights are in diffirent locations side to side.

02-26-2006, 08:16 PM	#1
jugernot Life, Be In It..... Join Date: Oct 2003 Location: Novato, California Posts: 1,498	How can I tell if I have the correct core support for my 68 I recall reading somewhere that there was a difference between the 67-68 core supports and the 69-72 core supports. Pic would be great. __________________ Project Name: LEMON DROP. Reconstruction started "December 2000". Projected completion date "Who knows" http://67-72chevytrucks.com/vboard/s...d.php?t=200082

02-26-2006, 08:40 PM	#2
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	Re: How can I tell if I have the correct core support for my 68 THE EAZIEST WAY THAT I KNOW OF IS TO LOOK ALONG THE BOTTOM FOR THE WELD NUTS FOR THE GRAVEL SHEILD. THEY WERE A 67-68 ONLY & THEY WON'T BE ON A 69-72 RAD. SUPPORT. JOHN THERE ARE SEVERAL OTHER DIFFERENCES & THEY ARE NOT INTERCHANGABLE. I USE THIS METHOD FOR IDENTIFING THEM ONLY. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST Last edited by junkyardjohn; 02-26-2006 at 08:43 PM.

02-26-2006, 08:50 PM	#3
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: How can I tell if I have the correct core support for my 68 Can they be converted? I knew they were different, but what makes them incompatable?

02-26-2006, 10:40 PM	#4
70chevyfreak Registered User Join Date: Feb 2005 Location: Holt, Missouri. Near KC Posts: 64	Re: How can I tell if I have the correct core support for my 68 If You Look On The Headlight Socket Welded To The Support There Is A Year Date On It. You Might Have To Clean The Crud Off First.

02-26-2006, 10:43 PM	#5
TEXAS 68 Vortec in the works Join Date: Nov 2003 Location: Spring,Texas Posts: 735	Re: How can I tell if I have the correct core support for my 68 I just went through this on mine, 69-up core supports had headlight buckets spot welded to the support. __________________ 68? It's all figured out untill you get it apart. Is it Sunday yet??? 68 Project 68 SWB frame off/98 Vortec with stock FI/power everything. 95 ECLB 2500 with 346,000 on the clock(the original HD) 99 Lesabre-wifes ride 08 Crew Cab LTZ-All Mine 89 SWB 5/7 drop-Son's first ride.

02-26-2006, 10:54 PM	#6
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Re: How can I tell if I have the correct core support for my 68 The biggest difference is the in the headlight mounting area. The 67/68 headlight buckets mount direct to the core while 69-72 core supports have brackets spotwelded to the core for the buckets. I should add this if for Chevys. I think you can convert a 67/68 to a 69/72 core by adding the headlight bucket brackets but there are some differences in going backward from a 69/72 to 67/68. The stamping was changed to not roll the edge of the headlight hole out of the way like the 67/68. The nuts that John talks about are another difference. The lower valance was used only in 67/68. Chevy and GMC both used the valance. In 69 it was eliminated in both Chev and GMC. I think you could get by without it for all but a serious retoration 67/68. Another very minor difference is that early 67 core supports do not have the captured nut for mounting the dual note horn behind the left headlight. I am not sure when GM added this option and thus the captured nut. These are the biggest differences I have found but there may others I am not aware of. Hope this helps. Any other questions or comments please post them. __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

02-27-2006, 02:30 AM	#7
rmurray25 Registered User Join Date: Sep 2005 Location: Pocatello, Idaho Posts: 39	Re: How can I tell if I have the correct core support for my 68 I don't have a picture of the 67-68 but here is a sample of what mine on my 69 looks like. Hope this helps. Attached Images __________________ 69 Chev K10, 350 4 bolt main, 202 "double humper" heads, healthy cam. edlebrock 600 cfm and preformer intake 3.73 ratio with posi rear. Check her out http://www.angelfire.com/ak6/1969k10/my_baby

02-27-2006, 05:30 AM	#8
jugernot Life, Be In It..... Join Date: Oct 2003 Location: Novato, California Posts: 1,498	Re: How can I tell if I have the correct core support for my 68 There is a ebay item that says it is a 67-68. Is this what I should be looking for? http://cgi.ebay.com/ebaymotors/1967-...QQcmdZViewItem __________________ Project Name: LEMON DROP. Reconstruction started "December 2000". Projected completion date "Who knows" http://67-72chevytrucks.com/vboard/s...d.php?t=200082

02-27-2006, 08:21 AM	#9
TEXAS 68 Vortec in the works Join Date: Nov 2003 Location: Spring,Texas Posts: 735	Re: How can I tell if I have the correct core support for my 68 That one is for 67-68 Chevy,not GMC __________________ 68? It's all figured out untill you get it apart. Is it Sunday yet??? 68 Project 68 SWB frame off/98 Vortec with stock FI/power everything. 95 ECLB 2500 with 346,000 on the clock(the original HD) 99 Lesabre-wifes ride 08 Crew Cab LTZ-All Mine 89 SWB 5/7 drop-Son's first ride.

02-28-2006, 07:50 AM	#10
sixty8c10 MY EX DRIVES A BROOM Join Date: Nov 2003 Location: Herington, KS Posts: 869	Re: How can I tell if I have the correct core support for my 68 only thing i can tell you is that if you want to use a 4core radiator the support in the ebay pic will have to be modified slightly __________________ They say nobody's perfect. I'm a nobody, so I must be perfect. Building Nemo -1968 C10 Long Bed FRED -1947 KB-2 International

02-28-2006, 11:28 AM	#11
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,052	Re: How can I tell if I have the correct core support for my 68 You Can NOT modify a 69-72 to fit a 67-68. The headlights are in diffirent locations side to side. __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD



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