What are these #'s on the frame? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pritch · 03-14-2009, 09:20 PM

I was taking a look at this chunk of frame from a parts donor that I kept for the automatic trans crossmember, and I noticed these numbers. No, they are not the VIN number. Are they like the part number? I got curious and checked my Panel and it has similar numbers in the same place. They are in the blue circle on the frame chunk, for reference.

The parts donor was a '68 C20 'Burb and that number is: 3935815-430 and under that is: 2-8-68-3

The one on the Panel, a '68 C10, is: 3935809-420 and under (really above-these are upside-down on the frame) is: 11-9- -2. I wonder if these lower #'s are a date, but they just didn't stamp the '68'?

Just wondering.

Longhorn Man · 03-14-2009, 09:28 PM

i know that's where the part number is on my one ton. I googled the number and it was verified as the p/n

pritch · 03-14-2009, 10:49 PM

Thanks, Andy. I figured that's what it was-just wanted to know for sure. So that means there is a difference between 1/2 and 3/4 ton frames? I've heard both ways-same or not same-but if there is different part numbers between 2 68's there must be.

Longhorn Man · 03-14-2009, 10:52 PM

been my understanding that there wasn't any difference either... not on the bare frame rails.
Would one of them happen to have the power steering indentation and the other one doesn't?

72armyswbtruck · 03-15-2009, 10:02 AM

Wow another Date Code location!!
Knew one had to exist but never paid any attention to it.

Longhorn Man · 03-15-2009, 11:01 AM

frames can seit around there for ages stacked up like fire wood. Although, I guess if the numbers are close together.....
I'll look into that this summer when I have the cab off the longhorn

pritch · 03-15-2009, 09:31 PM

Quote:

Originally Posted by Longhorn Man

been my understanding that there wasn't any difference either... not on the bare frame rails.
Would one of them happen to have the power steering indentation and the other one doesn't?

IIRC, the 'Burb did have power steering, but I'm not 100% sure-I didn't save that part of the frame. I'll have to look at some old pictures and see. My Panel, on the other hand, has the indentations for P/S, but didn't come with. Some PO put it on at some point.

jbristo67 · 03-15-2009, 10:50 PM

Quote:

Originally Posted by Longhorn Man

frames can seit around there for ages stacked up like fire wood. Although, I guess if the numbers are close together.....
I'll look into that this summer when I have the cab off the longhorn

I bet thats one thing you do miss about texas......You could work on your truck year round

Longhorn Man · 03-16-2009, 12:06 AM

actually, I had no roof nor shade where I worked... so from june through september, I couldn't work on my junk unless I had to.

03-14-2009, 09:20 PM	#1
pritch Registered User Join Date: Mar 2004 Location: Hoytsville, Utah Posts: 3,365	What are these #'s on the frame? I was taking a look at this chunk of frame from a parts donor that I kept for the automatic trans crossmember, and I noticed these numbers. No, they are not the VIN number. Are they like the part number? I got curious and checked my Panel and it has similar numbers in the same place. They are in the blue circle on the frame chunk, for reference. The parts donor was a '68 C20 'Burb and that number is: 3935815-430 and under that is: 2-8-68-3 The one on the Panel, a '68 C10, is: 3935809-420 and under (really above-these are upside-down on the frame) is: 11-9- -2. I wonder if these lower #'s are a date, but they just didn't stamp the '68'? Just wondering. __________________ '68 Panel Project Boogie Chillin' '68 C-10 Ol' Green

03-14-2009, 09:28 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What are these #'s on the frame? i know that's where the part number is on my one ton. I googled the number and it was verified as the p/n

03-14-2009, 10:49 PM	#3
pritch Registered User Join Date: Mar 2004 Location: Hoytsville, Utah Posts: 3,365	Re: What are these #'s on the frame? Thanks, Andy. I figured that's what it was-just wanted to know for sure. So that means there is a difference between 1/2 and 3/4 ton frames? I've heard both ways-same or not same-but if there is different part numbers between 2 68's there must be. __________________ '68 Panel Project Boogie Chillin' '68 C-10 Ol' Green

03-14-2009, 10:52 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What are these #'s on the frame? been my understanding that there wasn't any difference either... not on the bare frame rails. Would one of them happen to have the power steering indentation and the other one doesn't?

03-15-2009, 10:02 AM	#5
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Re: What are these #'s on the frame? Wow another Date Code location!! Knew one had to exist but never paid any attention to it. __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

03-15-2009, 11:01 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What are these #'s on the frame? frames can seit around there for ages stacked up like fire wood. Although, I guess if the numbers are close together..... I'll look into that this summer when I have the cab off the longhorn

03-16-2009, 12:06 AM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What are these #'s on the frame? actually, I had no roof nor shade where I worked... so from june through september, I couldn't work on my junk unless I had to.

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