Differences in C10, 20 and 30 cabs??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Dustmaker65** · 09-08-2015, 03:13 PM

Work with a guy that wants to know if there are any differences on 1/2ton, 3/4ton, and 1ton cabs? Told him that you guys would have the answers...

Thanks!!

cypressbog · 09-08-2015, 04:07 PM

Not that I'm aware of. All the differences are during the model years.

To name a few:
67 Small back window, big back window option.
67-68 E-brake under steering wheel and wiring harness junction block 67-68 only
71 had rear view mirrow raised pad above wind shield.

cooperhw · 09-08-2015, 05:15 PM

Same cabs.

**special-K** · 09-08-2015, 05:22 PM

10-30 Chevy/1500-3500 GMC cabs are all the same

hugger6933 · 09-08-2015, 08:08 PM

Did all C30 cabs have clearance lamps on the roof? I know you could get them on the lighter trucks it was a big thing to have them around here. Also what about high humps? All of the C30's I seen had the high hump but then again so did the big block trucks and the 4X4's. My C2500 has a high hump but it was a big block truck from the factory. With the option exception the cabs will all be the same just as swapping from say a 1/2 ton to another 1/2 ton there very well could be option differences.

sean1969c10 · 09-08-2015, 08:47 PM

Now just to throw an odd ball into the mix, my 1969 C10 was a 307 3spd 2wd and it has a high hump cab, and really no real reason for it. The truck was built in Janesville.

**special-K** · 09-09-2015, 07:04 AM

A C/30 with a TH350 had a low-hump. All 69-72 dual rear wheel C/30s had clearance lamps, as required by ICC. Single rear were an option just as on anything else

**Dustmaker65** · 09-09-2015, 09:08 AM

Thanks guys! Told him you guys were on top of these trucks!

Thanks again for the info.

09-08-2015, 03:13 PM	#1
Dustmaker65 Senior Member Join Date: Jan 2015 Location: Marquette Heights, IL. Posts: 1,135	Differences in C10, 20 and 30 cabs??? Work with a guy that wants to know if there are any differences on 1/2ton, 3/4ton, and 1ton cabs? Told him that you guys would have the answers... Thanks!! __________________ Jimmy Hoelzel

09-08-2015, 04:07 PM	#2
cypressbog Go Pack Go! Join Date: Nov 2005 Location: Green Bay Posts: 2,669	Re: Differences in C10, 20 and 30 cabs??? Not that I'm aware of. All the differences are during the model years. To name a few: 67 Small back window, big back window option. 67-68 E-brake under steering wheel and wiring harness junction block 67-68 only 71 had rear view mirrow raised pad above wind shield.

09-08-2015, 05:15 PM	#3
cooperhw Registered User Join Date: Oct 2014 Location: Mesa AZ (Near Phoenix) Posts: 2,302	Re: Differences in C10, 20 and 30 cabs??? Same cabs. __________________ "Life is too short to drive a boring vehicle". Later, Wayne

09-08-2015, 05:22 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: Differences in C10, 20 and 30 cabs??? 10-30 Chevy/1500-3500 GMC cabs are all the same __________________ "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 ~

09-08-2015, 08:08 PM	#5
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,261	Re: Differences in C10, 20 and 30 cabs??? Did all C30 cabs have clearance lamps on the roof? I know you could get them on the lighter trucks it was a big thing to have them around here. Also what about high humps? All of the C30's I seen had the high hump but then again so did the big block trucks and the 4X4's. My C2500 has a high hump but it was a big block truck from the factory. With the option exception the cabs will all be the same just as swapping from say a 1/2 ton to another 1/2 ton there very well could be option differences.

09-08-2015, 08:47 PM	#6
sean1969c10 Registered User Join Date: Mar 2008 Location: Powhatan, Va. Posts: 376	Re: Differences in C10, 20 and 30 cabs??? Now just to throw an odd ball into the mix, my 1969 C10 was a 307 3spd 2wd and it has a high hump cab, and really no real reason for it. The truck was built in Janesville. __________________ Sean "If your gonna be dumb, you gotta be tough" 1960 Chevy Impala Sedan - my 25 year search is over!! 1969 C-10 longbed - Nice day DD 1970 Chevy Nova - Street and Strip Project 2002 Acura MDX my DD 2007 Honda Odssey - My Wife's "Mommy Van"

09-09-2015, 07:04 AM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: Differences in C10, 20 and 30 cabs??? A C/30 with a TH350 had a low-hump. All 69-72 dual rear wheel C/30s had clearance lamps, as required by ICC. Single rear were an option just as on anything else __________________ "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 ~

09-09-2015, 09:08 AM	#8
Dustmaker65 Senior Member Join Date: Jan 2015 Location: Marquette Heights, IL. Posts: 1,135	Re: Differences in C10, 20 and 30 cabs??? Thanks guys! Told him you guys were on top of these trucks! Thanks again for the info. __________________ Jimmy Hoelzel



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