67-72 frame side cab mount bracket differences?

[CC69Rat]

I have a 67 SWB about to go to paint. Dad and I have already cleaned, and detailed the chassis, and I am really trying keep it that way.

So, a couple weeks ago I found another 67-72 SWB chassis. Talked to the wife, fast forward .. 4.5Hr drive, in the pouring rain to go get it.

We get there, I knew it was a 67-72 chassis. It hadnt been cut down, the frame horns matched up, 69 VIN stamp. (9Pxxxxxx) Pretty decent chassis. 69 narrow 6 lug housing, HA stamp (3:73) Non posi.

But -- it needed some love. Somebody at some point in it's life had knocked the cab mounts, the bed mount / stand things and the core support mount brackets off of the frame rails. It is just bare. I asked him about it, and he said it had a 50s model cab on it when he got it. It hadnt been hacked on, and I just needed a roller frame. I want an Auto Cross C10 anyway .. So, .. Hum? Maaayybe ?? After the 67 gets back from paint, I see a race truck in my life? It would be a good frame to convert to Hotchkis / Ridetech kit at some point.

He told me he had another LWB frame too, but someone had cut it in half with a plasma cutter. If I wanted the SWB chassis, he would give me the LWB frame, just to get the brackets off of it. I'll just bolt them back on the SWB frame, and go with it.

Here lies the issue..

The brackets arent lining up with the bolt holes where the original C10 Frame side cab mount brackets were. You could still tell where they were originally, the old rivet heads were still in the frame.

The frame holes are wider than the brackets I have worked for 4 days to get off the LWB frame pieces he gave me.

??? I thought they were all the same? The LWB frame has a trailing arm cross member in it..

If you measure across the bottom rivet holes of the front cab mount bracket I took off the LWB frame, it is 4 11/16" center to center.

The holes in the 69 SWB frame where it is supposed to go are 5 1/4" center to center ?

But, measuring my 67 chassis -- they are 4 11/16" !


The rear cab mount brackets arent working either. The frame holes are too wide for the bracket spacing. Same deal, 5 1/4" spacing between the holes

Are the cab mount brackets wider in 69-72? The top two holes in the front cab mount bracket line up fine.


If there is anyone out there with a 69-72 frame, that wouldnt mind measuring this for me I would really appreciate it. I just need to know if the lower two rivet holes in the front cab mount are 4 11/16" center to center? Or are they closer to 5 1/4"?

I cant figure it out.
Thanks.