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#1 |
67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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C40-c70? 67-72
I was thinking about restoring an old heavy-duty truck from 67-72 and I really dont know much about them. What engines came in them? the same as the normal C10-30's? what are the GVW's? what wheel bases are there? are the cabs that same as normal C10-30's? Any info is nice to know.
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#2 |
Registered User
Join Date: Mar 2006
Location: USA
Posts: 21,020
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Re: C40-c70? 67-72
They could have 350s,I assume smaller V8s too,V6s,Seen one or 2 inline 6s,all the way up to tall deck big block motors...The cabs are similar but no matter the year,they had the small back window like '67 10-30 series..The floor tunnel,and firewall area are also different.The doors are the same,but the there is a notch in the front of the doors on them for the fenders where the smaller trucks don't.I want to someday have a C/40 +.I found a real nice original paint one nearby for $1500 and there is many old grain truck 67-72 C/40+ trucks running around in rougher shape.During the harvesting times,you see a whole bunch of them running around,here.I'd really like to have one with the NAPCO 4wd conversion though.
Last edited by 1969k10stepside; 11-22-2007 at 10:15 PM. |
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#3 |
67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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Re: C40-c70? 67-72
I ahve seen them with a 283. Also when they say 4 +2 trans, im thinking they mean 4 speed trans and 2 speed rear-end. am i right?
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#4 |
Registered User
Join Date: Mar 2006
Location: USA
Posts: 21,020
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Re: C40-c70? 67-72
Yeah,4spd w/ 2 speed rears
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#5 |
Senior Member
Join Date: Jul 2005
Location: Winters Ca. 95694
Posts: 4,843
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Re: C40-c70? 67-72
I have also thought about doing one of these but in a top kick style. I would build a crew cab (4door) with a fleet side bed w/ step fenders as needed to cover teh duels. I would then run a Cummins diesel and alison trans or somthing. Change it over to 10 lug rims and have one heck of a trailer hauler
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#6 |
67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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Re: C40-c70? 67-72
I like that idea Rokcrln
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#7 |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: C40-c70? 67-72
I have a 67 C-50 wrecker. Like the other trucks, 67's had no side markers. Mine has a GVWR at 19,500 and came with a 292 L6/ 4 speed/ 2 speed rearend.
These bad boys look absolutely awesome converted to a dually pickup! ![]()
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#8 | |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: C40-c70? 67-72
Quote:
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#9 |
Special Order
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Location: Mt Airy, MD
Posts: 85,859
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Re: C40-c70? 67-72
To be correct,these are known as medium duty trucks.HDs are the 80-series and up.They had 292,current SBC(not 307),366BBC,tall deck BBC,and maybe a Detroit diesel?
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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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#10 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: C40-c70? 67-72
I too would like a C-40 or 50, I got the bug since I saw this one posted by someone on this site.
Danny - Southeast Missouri |
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#11 |
67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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Re: C40-c70? 67-72
So did 40-70 come with the diesel or only the 80 up (90?). Alos what dose it mean tall deck? longer rods or longer stroke?
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#12 |
I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,993
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Re: C40-c70? 67-72
longer cylinders
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The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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#13 | |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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Re: C40-c70? 67-72
Quote:
I *think* the Detroit Diesel available was the 4-53. There may have been others, but I have definitely seen a (year unknown) C70 with a 5 speed and a 4-53.
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#14 |
Senior Member
![]() Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,873
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Re: C40-c70? 67-72
Here's the standard and optional offerings through C60 for 1969;
![]() P.S. The model 13680 was the El Camino.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. Last edited by WorkinLonghorn; 11-23-2007 at 08:00 PM. |
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#15 |
Senior Member
![]() Join Date: Aug 2005
Location: Los Angeles
Posts: 1,331
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Re: C40-c70? 67-72
The DH 478 listed is the infamous Toroflow. It was a diesel version of the GMC V-6. Rare now, and very tough to find parts for. GMC didn't make a version of this medium duty truck (with the 67-72 pickup cab) until 1970. The '70-'72 GMC's would have offered all the Chevy engines, plus the GMC V-6.
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1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90. |
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#16 |
Senior Member
Join Date: Oct 2005
Location: Austin, TX
Posts: 1,229
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Re: C40-c70? 67-72
i've wanted to do one of these for a while... with a sexy stretched '71-'72 style eggcrate grille...
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"Anybody who would paint his truck like this, would go to a minister's funeral dressed in feathers!" - Big Enis Burdett '72 Blazer Restoration Blog: http://sportchicken.blogspot.com/ |
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#17 |
Special Order
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Location: Mt Airy, MD
Posts: 85,859
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Re: C40-c70? 67-72
That`s pretty much what the GMCs had.Find one of those.
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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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#18 |
Registered User
![]() Join Date: Oct 2007
Location: Fairfield, PA
Posts: 503
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Re: C40-c70? 67-72
I just found a cab and chassis along side the road in a farmers field with most everything still on the truck. So I stopped to see what was left since it had been retired many years ago...I noticed it still had the dash cluster...Then I noticed it was the detroit under the hood...The dash cluster had the factory air gauge and a factory diesel tach which went up to 4k. Way cool! It also had the radio delete...I could not find the owner so maybe I will check it out on my next trip.
A good friend of the family bought a 70 GMC 2 ton and 70 GMC 1/2 new for his business. The 2 ton had a 350 2bbl with governer. Excellent motor for hot rodding as it had the 4 bolt mains and even thought it had the 2 bbl it had large valve heads. Only problem with the small blocks in the bigger trucks is they worked there ass off and rarely saw 50k miles before needing a rebuild or replacement as the rods tended to exit the oil pan when the engine was done. ![]() |
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#19 |
67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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Re: C40-c70? 67-72
So the c40 is a 1.5ton? or a 2 ton? And im seeing a few diferent length of trucks, dose anyone know the diferent wheelbases. Also ive seen alot of 4 speed trucks and a few 5 speeds, are there any tree speeds?
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#20 |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: C40-c70? 67-72
To my knowledge there were no three speeds, unless some of them got Autos. I have seen an auto in one though. I actually couldn't tell what the different wheelbases are, but I'm pretty sure there nhever any of the made short enough to put a pickup box on directly.
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#21 |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: C40-c70? 67-72
Here's a Napco 4X4 GMC dump.
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! Last edited by 67_C-30; 11-24-2007 at 08:53 PM. |
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#22 |
67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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Re: C40-c70? 67-72
Did the truck come stock with 4 wheel drive?
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#23 |
Registered User
Join Date: Mar 2006
Location: USA
Posts: 21,020
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Re: C40-c70? 67-72
Nope..no 4wds in one ton or larger trucks..That truck being a NAPCO means its a converted to 4wd truck using NAPCO's conversion.The NAPCO 4wd trucks are rare.
Last edited by 1969k10stepside; 11-24-2007 at 09:14 PM. |
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#24 |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: C40-c70? 67-72
They were converted when they were new by a company named NAPCO. Here's some history on them.
http://www.napco4x4.org/
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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#25 |
Senior Member
Join Date: Feb 2005
Location: Maynardville, Tn
Posts: 3,030
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Re: C40-c70? 67-72
One of our neighbors bought one of these years ago (mid 70's) that had swallowed a valve. Remarkably, there was no damage to the cylinder wall. They replaced the piston and both valves in that cylinder and ran it for years until it finally spun a rod bearing. Slow as snot but didn't know what a load was.
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