V6 in a 1/2 ton? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68C15 · 05-01-2006, 10:35 PM

this morning I got to looking at my 67 stepside VIN plate. granted this thing has been messed with more than a 65 year old prostitute but what I found interesting is its starts with CM15.
I wonder what kind of gear it may actually have. its a low hump floor with no shifter holes. I got excited when I saw 4.10 posi listed in the glovebox.........until I saw the vin there didnt match the plate.

as a matter of fact I'm not even sure this thing was originally a stepside, a short fleet or what.

Longhorn Man · 05-01-2006, 11:47 PM

well, my old 69 GMC 1/2 ton was a 305/TH400, and it had a stock 3.07 gear as standard equipment.

**Bob B.** · 05-02-2006, 04:17 AM

CM15 means 1/2 ton GMC V-6, no question. Low hump floor means 3 speed column shift or automatic (which could be a TH400 or a 'Glide, even with the V-6) 4X2.

Longhorn Man · 05-02-2006, 05:33 AM

Bob, actually in a 1/2 ton with a V-6, I am 99% positive you got a high hump. Seena few that way. (2 wheel drive)

**Bob B.** · 05-03-2006, 01:22 AM

Yes, maybe so, because I have seen 1/2 ton short box 4X2 automatic Big Blocks with big hump floors in them. BTW- in '67 most GMC's didn't have the glove box equipment/options sticker.

68C15 · 05-03-2006, 06:54 AM

Quote:

Originally Posted by Bob B.

BTW- in '67 most GMC's didn't have the glove box equipment/options sticker.

the same is true for my 68 GMC. not to mention how it has 66 style armrests.

Andy, this is definately a low hump floor. do the rules get thrown out the door when it comes to GMC? you guys simply MUST see the mirror above the windshield in my 68. I'll have to post a pic if I can find it.

Longhorn Man · 05-03-2006, 02:44 PM

The normal rules on the hump seems to be the same, but the V-6 1/2 ton is added to that list of rules.... from what I've seen... and it has only been 2 or 3 plus my old one.

**Bob B.** · 05-03-2006, 06:42 PM

My '67 has '66 armrests, too. The CM15 we have been discussing mast have been a 3 speed column shift.

05-01-2006, 10:35 PM	#1
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	V6 in a 1/2 ton? this morning I got to looking at my 67 stepside VIN plate. granted this thing has been messed with more than a 65 year old prostitute but what I found interesting is its starts with CM15. I wonder what kind of gear it may actually have. its a low hump floor with no shifter holes. I got excited when I saw 4.10 posi listed in the glovebox.........until I saw the vin there didnt match the plate. as a matter of fact I'm not even sure this thing was originally a stepside, a short fleet or what.

05-01-2006, 11:47 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: V6 in a 1/2 ton? well, my old 69 GMC 1/2 ton was a 305/TH400, and it had a stock 3.07 gear as standard equipment.

05-02-2006, 04:17 AM	#3
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,369	Re: V6 in a 1/2 ton? CM15 means 1/2 ton GMC V-6, no question. Low hump floor means 3 speed column shift or automatic (which could be a TH400 or a 'Glide, even with the V-6) 4X2. __________________ 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.

05-02-2006, 05:33 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: V6 in a 1/2 ton? Bob, actually in a 1/2 ton with a V-6, I am 99% positive you got a high hump. Seena few that way. (2 wheel drive)

05-03-2006, 01:22 AM	#5
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,369	Re: V6 in a 1/2 ton? Yes, maybe so, because I have seen 1/2 ton short box 4X2 automatic Big Blocks with big hump floors in them. BTW- in '67 most GMC's didn't have the glove box equipment/options sticker. __________________ 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. Last edited by Bob B.; 05-03-2006 at 01:24 AM.

05-03-2006, 02:44 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: V6 in a 1/2 ton? The normal rules on the hump seems to be the same, but the V-6 1/2 ton is added to that list of rules.... from what I've seen... and it has only been 2 or 3 plus my old one.

05-03-2006, 06:42 PM	#8
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,369	Re: V6 in a 1/2 ton? My '67 has '66 armrests, too. The CM15 we have been discussing mast have been a 3 speed column shift. __________________ 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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