Difficulty decoding a VIN# - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Nima** · 11-05-2018, 10:11 PM

Hi guys:
I saw this GMC truck at junk yard for sale. It is 3/4 ton but the frame looked shorter than my long bed. It didn't have a bed and I didn't have a measuring tape. Anyways, this is the VIN # CM20DZA14022.

So, what is the "M" and "D" stand for? I don't see these letters on the decoding thread. Do 3/4 tons come short bed? It has 10 bolt read and glove box sticker says it is 127 wheel base.
Thanks

**Getter-Done** · 11-05-2018, 10:29 PM

The M stands for V6 gas The OD stands for wide bed.
I will post the link I found it.

**Getter-Done** · 11-05-2018, 10:31 PM

Here is the link

http://67-72chevytrucks.com/vboard/s...ght=vin+decode

**Nima** · 11-05-2018, 10:41 PM

Thanks.
A V6?? I even didn't know they came with V6! How the V6 compare with inline6? And why a 3/4 ton has a V6?

**Getter-Done** · 11-05-2018, 10:46 PM

This V6 is the real deal.
If I remember right they told me it is 292 cid.
I have only heard of them.
The people I know that had them love them.

Killer Bee · 11-05-2018, 11:09 PM

regarding 292, look which engine had highest hp rating on this '65 C20 placard

**Getter-Done** · 11-05-2018, 11:13 PM

Quote:

Originally Posted by Killer Bee

regarding 292, look which engine had highest hp rating on this '65 C20 placard

Wow
That is the one I would pick.

**Nima** · 11-05-2018, 11:15 PM

Are they rare? How about the wheel base of 127? I even don't know my 67 C20 wheel base! Are they short bed?

**too much stuff** · 11-05-2018, 11:16 PM

Quote:

Originally Posted by Nima

Thanks.
A V6?? I even didn't know they came with V6! How the V6 compare with inline6? And why a 3/4 ton has a V6?

The V-6 was used until 69 and would probably be a 305 or maybe a 351. I think you could even get it in a 1 ton.

127" wheelbase is a longbed. No short bed 3/4 tons

**Getter-Done** · 11-05-2018, 11:25 PM

Here is some info I have on WB on cab and chassis trucks
Name: Cab and Chassis.JPG
Views: 113
Size: 100.0 KB

**Nima** · 11-05-2018, 11:59 PM

Thank you. This has been very informative.
Is there a production number for these V6 engines? I did a google search and came up empty.

11-05-2018, 10:11 PM	#1
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	Difficulty decoding a VIN# Hi guys: I saw this GMC truck at junk yard for sale. It is 3/4 ton but the frame looked shorter than my long bed. It didn't have a bed and I didn't have a measuring tape. Anyways, this is the VIN # CM20DZA14022. So, what is the "M" and "D" stand for? I don't see these letters on the decoding thread. Do 3/4 tons come short bed? It has 10 bolt read and glove box sticker says it is 127 wheel base. Thanks __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner Last edited by Nima; 11-05-2018 at 10:32 PM.

11-05-2018, 10:29 PM	#2
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,935	Re: Difficulty decoding a VIN# The M stands for V6 gas The OD stands for wide bed. I will post the link I found it. __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

11-05-2018, 10:31 PM	#3
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,935	Re: Difficulty decoding a VIN# Here is the link http://67-72chevytrucks.com/vboard/s...ght=vin+decode __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

11-05-2018, 10:41 PM	#4
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	Re: Difficulty decoding a VIN# Thanks. A V6?? I even didn't know they came with V6! How the V6 compare with inline6? And why a 3/4 ton has a V6? __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

11-05-2018, 10:46 PM	#5
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,935	Re: Difficulty decoding a VIN# This V6 is the real deal. If I remember right they told me it is 292 cid. I have only heard of them. The people I know that had them love them. __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

11-05-2018, 11:09 PM	#6
Killer Bee Registered User Join Date: Jan 2016 Location: Barber City, CA Posts: 4,770	Re: Difficulty decoding a VIN# regarding 292, look which engine had highest hp rating on this '65 C20 placard __________________ *I started out with nothing - and I still have most of it*

11-05-2018, 11:15 PM	#8
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	Re: Difficulty decoding a VIN# Are they rare? How about the wheel base of 127? I even don't know my 67 C20 wheel base! Are they short bed? __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

11-05-2018, 11:25 PM	#10
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,935	Re: Difficulty decoding a VIN# Here is some info I have on WB on cab and chassis trucks __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

11-05-2018, 11:59 PM	#11
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	Re: Difficulty decoding a VIN# Thank you. This has been very informative. Is there a production number for these V6 engines? I did a google search and came up empty. __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner



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