Rear Crossmember Dimensions

Hello, I’m building a new frame for an intermediate (1975) CJ5 and I need a rear crossmember. I’d prefer to fabricate my own, but I don’t have an original to pull dimensions from. If someone could measure an original and send the specs it would be immensely appreciated!

 

I have a bare frame in the shed. I’ll get a measurement and photo in a bit.

Jon B.

 

Outside frame rails


Overall length of crossmember


Inside frame rails

Jon B.

 

Overhang - beyond frame rails


Width of crossmember


Attachment detail

Jon B.

 

Jon, thank you so much! That’s exactly what I needed. If I could ask for one more favor, could you measure the thickness of the top flange of the crossmember? I mean the width of the surface that the body mounts sit on.

Also I remember that there’s a spot in the middle where the crossmember narrows slightly. What’s the width of that area?

 

Stand by…

Jon B.

 

OK…

Yes, the center is ‘shallower’ than the outsides, measuring just under 3”. Let’s call it 2-15/16”.

That portion is 12.5” wide where it begins, and is 10.5” at the ‘bottom’. It’s centered in the member.

The flange is 1.5” wide on the top; the bottom also.



Jon B.

 

You’re the man! Thanks again