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

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.