How can I find out what the original Engine was on my 68 GMC 1/2 ton? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rwilhi · 03-09-2008, 01:35 PM

I know there is a way to find out, but I am having no luck. It is pretty easy on my 70 442 Convertable, But I am stuck.. Does anyone know how to find out using my VIN, Someone told me that it is a 327, But Then someone told me it was a 350.. Any help?

Thanks Rodrigo

**El Jay** · 03-09-2008, 02:07 PM

Look @ the SPID on the inside of the glove box door

**special-K** · 03-09-2008, 03:32 PM

If you don`t have the SPID label,you can only determine if it was a 6cly or V8 by the second letter in the VIN...S for 6cyl and E for V8.I`ve never done the GM restoration packet thing.Is the specific info in those?

Longhorn Man · 03-09-2008, 06:38 PM

Your SPID (option sheet) will show any optional engine... if nothing is listed, then it is one of the 3 base model engines.
Being a GMC, your vin will start with either;
CS
CM
CE
CS would be an inline ... 250, standard, 292 optional.
CM would be GMC only V-6 engines... 305 standard, and possibly a 351 optional (i'm not sure when they dropped the 351 on 1/2 ton trucks)
CE would be the V-8, 307 is standard, 327, and 396 bug block were optional.

If your spid is missing, then there is no way of knowing your truck's history unless the build sheet is stuffed into the seat cuishons, or you start tracking down previouse owners.

rwilhi · 03-09-2008, 07:59 PM

THanks for he info.. I will try to see if the SPID is there.. You Guys are great!

CG · 03-09-2008, 10:38 PM

Quote:

Originally Posted by Longhorn Man

...bug block were optional.

Hey I have one of those in my dune buggy

Longhorn Man · 03-09-2008, 10:52 PM

lol... cood catch mark!
I know I have many typos, and my spelling sucks, but there was an actual reason for that typo... band-aid on my middle finger..which is my main typing finger.

CG · 03-10-2008, 12:17 AM

Quote:

Originally Posted by Longhorn Man

lol... cood catch mark!
I know I have many typos, and my spelling sucks, but there was an actual reason for that typo... band-aid on my middle finger..which is my main typing finger.

Im just goofin with ya Andy...LOL...I have no room to talk when it comes to spelling and typing.

03-09-2008, 01:35 PM	#1
rwilhi Registered User Join Date: Jan 2008 Location: Bay Area, California Posts: 67	How can I find out what the original Engine was on my 68 GMC 1/2 ton? I know there is a way to find out, but I am having no luck. It is pretty easy on my 70 442 Convertable, But I am stuck.. Does anyone know how to find out using my VIN, Someone told me that it is a 327, But Then someone told me it was a 350.. Any help? Thanks Rodrigo

03-09-2008, 02:07 PM	#2
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: How can I find out what the original Engine was on my 68 GMC 1/2 ton? Look @ the SPID on the inside of the glove box door __________________ '69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck

03-09-2008, 03:32 PM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: How can I find out what the original Engine was on my 68 GMC 1/2 ton? If you don`t have the SPID label,you can only determine if it was a 6cly or V8 by the second letter in the VIN...S for 6cyl and E for V8.I`ve never done the GM restoration packet thing.Is the specific info in those? __________________ "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 ~

03-09-2008, 06:38 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: How can I find out what the original Engine was on my 68 GMC 1/2 ton? Your SPID (option sheet) will show any optional engine... if nothing is listed, then it is one of the 3 base model engines. Being a GMC, your vin will start with either; CS CM CE CS would be an inline ... 250, standard, 292 optional. CM would be GMC only V-6 engines... 305 standard, and possibly a 351 optional (i'm not sure when they dropped the 351 on 1/2 ton trucks) CE would be the V-8, 307 is standard, 327, and 396 bug block were optional. If your spid is missing, then there is no way of knowing your truck's history unless the build sheet is stuffed into the seat cuishons, or you start tracking down previouse owners.

03-09-2008, 07:59 PM	#5
rwilhi Registered User Join Date: Jan 2008 Location: Bay Area, California Posts: 67	Re: How can I find out what the original Engine was on my 68 GMC 1/2 ton? THanks for he info.. I will try to see if the SPID is there.. You Guys are great!

03-09-2008, 10:52 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: How can I find out what the original Engine was on my 68 GMC 1/2 ton? lol... cood catch mark! I know I have many typos, and my spelling sucks, but there was an actual reason for that typo... band-aid on my middle finger..which is my main typing finger.



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