72 GMC Sierra K2500 - New Project - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Dieselwrencher** · 10-23-2015, 08:12 PM

Here's another thing to add. There were never, ever, any big block production 4wd trucks in 67-72. With the SPID saying it's a 127" wheel base leads me to believe a short bed frame has been swapped in, or some one cut it down and did a really nice job if you can't see it easily. Also, IMO your rear axle is too far back to be a SWB from the pics you've shown. That flat bed sure looks like an 8 footer to me. It looks like it has had a shackle flip in the rear too. It still looks like a great truck though. And with a 396 already added in it too boot! It looks like you have a very nice truck IMO!

scgmc72 · 10-24-2015, 10:26 AM

I'm not exactly sure where to find the frame VIN, but stamped on the frame under each door are the below numbers:

Under Driver Side Door: 3998723 262 5 26 34

Under Passenger Side Door: 3998724 262 6 9 34

Not sure why these numbers don't match, but I'm new to all of this.

Thanks for everyone's help in trying to figure out exactly what this is. I think you are probably correct on the wheel base. I haven't pulled a tape, but am betting it is the 127" LWB.

**LockDoc** · 10-24-2015, 11:19 AM

Quote:

Originally Posted by scgmc72

I'm not exactly sure where to find the frame VIN, but stamped on the frame under each door are the below numbers:

Under Driver Side Door: 3998723 262 5 26 34

Under Passenger Side Door: 3998724 262 6 9 34

Not sure why these numbers don't match, but I'm new to all of this.

Thanks for everyone's help in trying to figure out exactly what this is. I think you are probably correct on the wheel base. I haven't pulled a tape, but am betting it is the 127" LWB.

As mentioned in a previous post above, the frame # would be on top of the frame by the steering box. You may have to sand or wire brush the area a little bit.

I like the truck and I wouldn't worry too much about it. I would just drive and enjoy it....

LockDoc

**Ol Blue K20** · 10-24-2015, 11:36 AM

Being a GMC it may nt have a VIN stamped in the frame. The frame I bought for Blue is a GMC and has no VIN #

scgmc72 · 10-25-2015, 07:36 PM

Anyone know how to find out more about what this engine originally came out of?
Codes on Block are: T10I3IV 18L120797

I scrubbed & cleaned for the frame VIN. There looks like there may have been something there (very tiny), but was not legible. I'm not sure if this was it or not.

**BlazerBill** · 07-20-2018, 03:42 PM

I have numbers 3998724 on the left side of frame. 72 K20

**68350** · 07-21-2018, 12:13 AM

Here are possible motors it could be

**Steeveedee** · 07-21-2018, 08:23 PM

OP hasn't posted in almost 3 years. I wonder what ever happened?

10-23-2015, 08:12 PM	#26
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,142	Re: 72 GMC Sierra K2500 - New Project Here's another thing to add. There were never, ever, any big block production 4wd trucks in 67-72. With the SPID saying it's a 127" wheel base leads me to believe a short bed frame has been swapped in, or some one cut it down and did a really nice job if you can't see it easily. Also, IMO your rear axle is too far back to be a SWB from the pics you've shown. That flat bed sure looks like an 8 footer to me. It looks like it has had a shackle flip in the rear too. It still looks like a great truck though. And with a 396 already added in it too boot! It looks like you have a very nice truck IMO! __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

10-24-2015, 10:26 AM	#27
scgmc72 Registered User Join Date: Oct 2015 Location: Aiken, SC Posts: 13	Re: 72 GMC Sierra K2500 - New Project I'm not exactly sure where to find the frame VIN, but stamped on the frame under each door are the below numbers: Under Driver Side Door: 3998723 262 5 26 34 Under Passenger Side Door: 3998724 262 6 9 34 Not sure why these numbers don't match, but I'm new to all of this. Thanks for everyone's help in trying to figure out exactly what this is. I think you are probably correct on the wheel base. I haven't pulled a tape, but am betting it is the 127" LWB.

10-24-2015, 11:36 AM	#29
Ol Blue K20 Proprietor of Dale's Corner Join Date: Nov 2012 Location: Vacaville , CA Posts: 16,245	Re: 72 GMC Sierra K2500 - New Project Being a GMC it may nt have a VIN stamped in the frame. The frame I bought for Blue is a GMC and has no VIN # __________________ "Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man R.I.P. FleetsidePaul

10-25-2015, 07:36 PM	#30
scgmc72 Registered User Join Date: Oct 2015 Location: Aiken, SC Posts: 13	Re: 72 GMC Sierra K2500 - New Project Anyone know how to find out more about what this engine originally came out of? Codes on Block are: T10I3IV 18L120797 I scrubbed & cleaned for the frame VIN. There looks like there may have been something there (very tiny), but was not legible. I'm not sure if this was it or not.

07-20-2018, 03:42 PM	#31
BlazerBill Senior Member Join Date: Apr 2013 Location: Northern ca. Wine country Posts: 405	Re: 72 GMC Sierra K2500 - New Project I have numbers 3998724 on the left side of frame. 72 K20

07-21-2018, 12:13 AM	#32
68350 Senior Member Join Date: Jan 2002 Location: Williston, ND Posts: 2,999	Re: 72 GMC Sierra K2500 - New Project Here are possible motors it could be Attached Images __________________ 68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi

07-21-2018, 08:23 PM	#33
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,723	Re: 72 GMC Sierra K2500 - New Project OP hasn't posted in almost 3 years. I wonder what ever happened? __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA



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