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#1 |
Senior Member
![]() Join Date: Nov 2022
Location: So central coast, CA
Posts: 391
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69 chevy K10 trans cover hi-lo "cut out"
Stripping down my K10 for mechanical restore and noticed the poorly cut shifter hole for the Hi-Lo. Saw the metal stamped "DEMCO" right next to the hole. Never noticed that name on any stamped metal before. Don't even know DEMCO means.
The truck was a one owner for 52 years until I bought it. From the looks of old original floor covering, original paint and the massive amount of dried grease and mud caked under the cover, I doubt it had ever been removed (or serviced) so I am guessing the trans cover is original. Anyone every seen the DEMCO mark or the poorly cut shifter hole before? Just curious |
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#2 |
Senior Member
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Location: CA
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Re: 69 chevy K10 trans cover hi-lo "cut out"
I've got two high-hump trans covers. The blue one is from a '67 2WD, and it doesn't appear to have the Demco logo. The green one without any holes does have the logo. Not sure what year truck it came out of.
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#3 | |
Senior Member
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Location: So central coast, CA
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Re: 69 chevy K10 trans cover hi-lo "cut out"
Quote:
Mine, being an early production 1969 K10 was fitted with the Rockwell (that they were fazing out). Perhaps that is why the hole is crudely cut. They had already tooled and preped for the NP205 trans covers. Just a thought. Thanks for the pic, it helps |
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#4 |
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Location: Mt Airy, MD
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Re: 69 chevy K10 trans cover hi-lo "cut out"
I've never noticed that DEMCO stamp. As far as the owner-made transfer case shifter hole goes, I think this is a 2wd 4spd transmission hump that was cut to fit the Rockwell transfer case shifter. Definitely not factory done. You truck is a factory 4wd? VIN starts with a K not a C?
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"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; 12-12-2022 at 09:37 AM. |
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#5 |
Registered User
Join Date: Mar 2014
Location: Pekin, Illinois
Posts: 413
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Re: 69 chevy K10 trans cover hi-lo "cut out"
Maybe the cab was swapped because of rust and they forgot to save the floor hump.
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Harley 1969 Chevy C-10 Long Bed, 350cid, 700R4 |
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#6 |
Senior Member
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Location: Hillsboro, Oregon
Posts: 450
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Re: 69 chevy K10 trans cover hi-lo "cut out"
My factory 68 I6/4 speed 2wd high hump cover does not have that Democo stamp on it, it also has zero dimples anywhere to for other items, even a spot for cutting the hole for a V8 truck.
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The Twins: 1968 C10 SWB - Blue 327/5 Speed 1968 Camaro SS/RS - Blue 327/4speed C10 Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=833278 The "Others" 1933 Ford Pickup (Camaro in disguise) 2017 Camaro SS Life long Chevy guy |
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#7 |
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Location: Berne IN
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Re: 69 chevy K10 trans cover hi-lo "cut out"
I would guess it was done at the factory in a “gitter done” moment
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71 C10 72 K20 72 K10 Super Kirk |
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#8 | ||
Special Order
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Location: Mt Airy, MD
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Re: 69 chevy K10 trans cover hi-lo "cut out"
Quote:
Quote:
As far as early-68/Rockwells being phased out I'd say too early for that. The NP205 phased-in during '69 but only for the brand new Blazer model, as far as I know. The Rockwell still had a full year of production ahead. I guess my theory on the 2wd 4spd cover wouldn't work anyway. The shifter hole would be farther forward on a 2wd. Funny how the transmission shifter is right for the 4wd yet no cut-out for any transfer case shifter of any kind. I wonder how the brand stamped pieces tie in to all this. If it was late in the year I could see supply shortage playing a part. But the '69 floor hump is a continued parts since '67
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"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 ~ |
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#9 |
Senior Member
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Location: So central coast, CA
Posts: 391
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Re: 69 chevy K10 trans cover hi-lo "cut out"
Thank you for the input. The DEMCO stamp has me stumped. I have lots of old GM literature (pretty much all available on line now) and haven't been able to find this name in their products. I have an e-mail in to DEMCO products which was founded in Chicago in 1950 and did machine and design work at the time this truck was built. Hopefully an answer soon as I hate being stumped.
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#10 |
Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,457
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Re: 69 chevy K10 trans cover hi-lo "cut out"
My guess would be that they were a supplier of parts often the General would have multiple suppliers for the same part....
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California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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#11 |
Special Order
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Location: Mt Airy, MD
Posts: 85,859
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Re: 69 chevy K10 trans cover hi-lo "cut out"
GM used/uses various jobbers but rarely do they bear markings of that company. The idea is to portray all parts are made by GM. Something exceptional going on for sure. Not so long ago I had a heap of parts. I bet I had a dozen loose transmission humps. I sand blasted all but the cleanest few and none were stamped DEMCO. These came from a variety of model years from a variety of locations. I've been on this website where we've been breaking things down for many years. we always say there is always something more to learn. But the fact that only you have brought this question to the table, and mostly due to the home shop looking yet factory done transfer case shifter hole, says to me there weren't many. Must have been an exceptional circumstance that brought these about. Since the humps were the same part as used in the previous two years, it must have been a supply flow glitch/oversight. It's a good mystery!
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"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 ~ |
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#12 |
Senior Member
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Location: CA
Posts: 5,470
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Re: 69 chevy K10 trans cover hi-lo "cut out"
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#13 |
Senior Member
![]() Join Date: Nov 2022
Location: So central coast, CA
Posts: 391
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Re: 69 chevy K10 trans cover hi-lo "cut out"
Thanks for the photo.
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#14 |
Senior Member
![]() Join Date: Nov 2022
Location: So central coast, CA
Posts: 391
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Re: 69 chevy K10 trans cover hi-lo "cut out"
Here's another one with the DEMCO stamp.
Now that I have been looking for them, not rare at all. Saw 3 in person the last month and bought this one yesterday day out of a 72 C10 custom deluxe big block truck. The other two I saw were in 1970 C10 V8 trucks. Maybe it's mainly a CA thing and Fremont used this vendor as they were all Z code trucks I looked at. Happy building (For some reason I am drawn to the orange and red colored trucks) Last edited by CKfan; 03-09-2023 at 11:43 PM. Reason: Forgot sentence |
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