How to tell what year frame I have - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RustMaster87 · 08-12-2007, 08:10 PM

I purchased a frame and body from two different people so I have no idea as to what year my frame is. All of my body panels are 73-80. My frame has the cross members that have the round cutouts for reduced weight. Other than the cutouts, how can I determine what year my frame is? I am trying to avoid wasting money on the incorrect body mounts and checking to see if I have to modify anything else. I searched but came up with lots of information that was hard to sort through. Thanks for the help.

f.monroe · 08-12-2007, 08:22 PM

The front frame horns on a 73-80 are rounded and follow the contour of the bumper a little . 81-87 frames are cut straight and at an angle if that helps . Frank

RustMaster87 · 08-12-2007, 08:36 PM

Just looked at the frame and the front frame horns are not rounded, they are straight and at an angle. From what I have read, I guess I have to do some work on that front section of the frame to get my 73-80 body and bumper to fit right.

**N2TRUX** · 08-12-2007, 09:42 PM

The original vin number should be stamped in the frame. It's an elusive little devil, but start by looking on the drivers side between the front suspension and the front cab mount. If it's not buried under a layer of gunk get those numbers and we can tell you exactly what year it started life.

bent · 08-13-2007, 12:41 AM

My apologys fo butting in but when i read this i realised that it would be a good idea if knew a little more about my truck. For starters I have 2 different numbers on my front horns and after reading this i realised that the horns say it is a 73-80 but the front clipp was a 82ish and bolted right up. Any how the numbers on the driverside of the horns are 80613 and on the other side the numbers are 70612 so any information would be great.

dooce · 08-14-2007, 08:36 AM

I've got the same problem. I know I've got the early style frame, but I don't know the exact year. I have T8S517353 on the pass side, top of frame rail, between cab mounts. I also have 7S483 on the driver's frame horn. Someone has told me it was a 78 model, but I would really like to know for sure. Thanks

bent · 08-19-2007, 06:20 PM

well this didnt go far

08-12-2007, 08:10 PM	#1
RustMaster87 Registered User Join Date: Jan 2007 Location: NH Posts: 25	How to tell what year frame I have I purchased a frame and body from two different people so I have no idea as to what year my frame is. All of my body panels are 73-80. My frame has the cross members that have the round cutouts for reduced weight. Other than the cutouts, how can I determine what year my frame is? I am trying to avoid wasting money on the incorrect body mounts and checking to see if I have to modify anything else. I searched but came up with lots of information that was hard to sort through. Thanks for the help.

08-12-2007, 08:22 PM	#2
f.monroe Senior Member Join Date: May 2004 Location: Caldwell,Tx. Posts: 3,648	Re: How to tell what year frame I have The front frame horns on a 73-80 are rounded and follow the contour of the bumper a little . 81-87 frames are cut straight and at an angle if that helps . Frank __________________ Born and proudly residing in a Red State !

08-12-2007, 08:36 PM	#3
RustMaster87 Registered User Join Date: Jan 2007 Location: NH Posts: 25	Re: How to tell what year frame I have Just looked at the frame and the front frame horns are not rounded, they are straight and at an angle. From what I have read, I guess I have to do some work on that front section of the frame to get my 73-80 body and bumper to fit right.

08-12-2007, 09:42 PM	#4
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: How to tell what year frame I have The original vin number should be stamped in the frame. It's an elusive little devil, but start by looking on the drivers side between the front suspension and the front cab mount. If it's not buried under a layer of gunk get those numbers and we can tell you exactly what year it started life. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

08-13-2007, 12:41 AM	#5
bent The master of disaster Join Date: Nov 2006 Location: Warsaw Texas Posts: 249	Re: How to tell what year frame I have My apologys fo butting in but when i read this i realised that it would be a good idea if knew a little more about my truck. For starters I have 2 different numbers on my front horns and after reading this i realised that the horns say it is a 73-80 but the front clipp was a 82ish and bolted right up. Any how the numbers on the driverside of the horns are 80613 and on the other side the numbers are 70612 so any information would be great.

08-14-2007, 08:36 AM	#6
dooce Registered User Join Date: Aug 2007 Location: Tinker, OK Posts: 369	Re: How to tell what year frame I have I've got the same problem. I know I've got the early style frame, but I don't know the exact year. I have T8S517353 on the pass side, top of frame rail, between cab mounts. I also have 7S483 on the driver's frame horn. Someone has told me it was a 78 model, but I would really like to know for sure. Thanks

08-19-2007, 06:20 PM	#7
bent The master of disaster Join Date: Nov 2006 Location: Warsaw Texas Posts: 249	Re: How to tell what year frame I have well this didnt go far

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