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08-29-2011, 07:58 PM
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#1 |
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Registered User
Join Date: Sep 2007
Location: Mundelein, IL
Posts: 862
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68/68 to 69/70 CHEVY core support differences explained
69/70 core supports have an additional support spot welded on that 67/68 core supports do not. Here on the left is a graft from a 67, and to the right is the additional 70 mount. to use a 69/70 with a 67/68 grill, you'll have to remove the extra support.
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time is inversely proportional to money; that's why it takes me so long 1967 K10 1967 Camaro |
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08-29-2011, 07:59 PM
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#2 |
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Registered User
Join Date: Sep 2007
Location: Mundelein, IL
Posts: 862
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Re: 68/68 to 69/70 CHEVY core support differences explained
6 spot welds made easy by a spot weld cutter. notice the 70 still have the recess stamped for the headlight spring, but not the hole drilled to accept the spring end.
  
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time is inversely proportional to money; that's why it takes me so long 1967 K10 1967 Camaro |
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08-29-2011, 08:02 PM
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#3 |
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Registered User
Join Date: Sep 2007
Location: Mundelein, IL
Posts: 862
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Re: 68/68 to 69/70 CHEVY core support differences explained
That was easy! not so fast. check the hole that remains. the 70 is in the wrong spot, not rolled to have the headlight bucket rest smoohtly, and oblong vs a perfect cirlce on the 67-68.
 
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time is inversely proportional to money; that's why it takes me so long 1967 K10 1967 Camaro |
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08-29-2011, 08:05 PM
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#4 |
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Registered User
Join Date: Sep 2007
Location: Mundelein, IL
Posts: 862
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Re: 68/68 to 69/70 CHEVY core support differences explained
You could mark and cut the square adjuster holes, and extend the large hole to accommodate the correct headlight location, but if you can cut up a rusty 67/68 core like me, measure carefully for mounting hole alignment (I did find them different slightly, so I kept both 70 fender mounting holes. We'll see) you can graft in the correct hole and mounts.
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time is inversely proportional to money; that's why it takes me so long 1967 K10 1967 Camaro |
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08-29-2011, 08:28 PM
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#5 |
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Senior Member
 
Join Date: Apr 2003
Location: Elberton Ga.
Posts: 3,470
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Re: 68/68 to 69/70 CHEVY core support differences explained
you could knock the headlight extensions off of a gmc core support and be done. (67-68 gmc cores actually have the holes for the adjusters and spring)
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08-30-2011, 08:33 AM
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#6 |
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trucks72
Join Date: Jul 2002
Location: Crossville
Posts: 315
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Re: 68/68 to 69/70 CHEVY core support differences explained
Not sure on this, but if you measure from outside of the headlight hole to the outside of the other hole. The 67-68 is a longer measurment. I checked on this one time and I think that is what happened.
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08-30-2011, 08:40 PM
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#7 |
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Senior Member
Join Date: Apr 2003
Location: Elberton Ga.
Posts: 3,470
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Re: 68/68 to 69/70 CHEVY core support differences explained
well, i was about half right. here`s a pic of the backside of two gmc cores. the one on the right is a 67-68 type, note the square holes for the adjusting screws and the raised pad and hole for the spring. the hole for the headlight is in the right place too. you can knock the extensions from this one and have a 67-68 chevy core. the other is a 69-72 type gmc core, it would have to be done like 67mater is doing his
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08-30-2011, 10:39 PM
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#8 |
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Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 68/68 to 69/70 CHEVY core support differences explained
good thread!
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore  )86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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05-31-2012, 06:33 PM
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#9 |
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Registered User
Join Date: Mar 2012
Location: Seaside, OR
Posts: 6
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Re: 68/68 to 69/70 CHEVY core support differences explained
After my truck was reassembled after a paint job, I noticed the headlight bucket is lower on the driver side. all measurements appear the same but both sides except the headlight bucket. can it be removed and raised up and bolt the back in? Has anyone had a similar problem? it's rather strange because before disassembly everything was lined up properly.
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05-31-2012, 06:35 PM
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#10 |
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Registered User
Join Date: Mar 2012
Location: Seaside, OR
Posts: 6
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Re: 68/68 to 69/70 CHEVY core support differences explained
I post a photo of it but I'm really not sure how since I don't see a browse computer for files.
Chad Posted via Mobile Device |
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