Crossmember differences between F150-F250-F350?

Gentlemen,

I know that the heavier trucks have heavier frames, but what about the crossmembers? The one I'm curious about specifically is the crossmember that the rear cab mounts are attached to. There is an angled bracket on each side, directly below each cab mount.

Would one of these crossmembers and the L&R brackets be the same between an F150 and an F350?

And, is it safe to assume that this crossmember was the same through to 1996?

Good question. I can compare my F150 and F350 but I won’t be home again until Monday. If no one else chimes in I will try to get you an answer.

I'm pretty sure they were all the same.  But you can look at the parts lists here: Suspension & Steering/Crossmembers.  Go to the Illustrations tab, and I think the part you are talking about is 5025.  Then go to the Part Numbers tab, pick the truck and the parts list #, and then go to the parts list and see what the part # is.

I did a spot check and found two instances of E0TZ 5025-A.

Rembrant wrote

Would one of these crossmembers and the L&R brackets be the same between an F150 and an F350?

Probably.  It might have also been used on Broncos, though possibly in a different location.

Rembrant wrote

And, is it safe to assume that this crossmember was the same through to 1996?

Probably

Steve83 wrote

It might have also been used on Broncos, though possibly in a different location.

I took a quick look at the body mount page in the LMC catalog, which is all I had for a quick reference, and it looks like the Bronco body mounts are all either outside the frame rails, or on top of the frame rails, is that right? For the pickup rear cab mounts, they are located inside the frame rails (while the front mounts are outside the frame rails, like the Bronco).

The crossmember in question also has the contour in it for the front end of the mid-ship fuel tank.

The reason I asked about the F350 crossmembers is that I forgot that there were a couple F350's out at the closest junkyard. BUT...Gary's links above reminded me that the cab/chassis trucks are not necessarily going to have similar frame parts as all of the other regular trucks. Still...there are a few 1992-1996 F150's out there, and I'm going to have a look at them...I'm just not holding my breath as the reason they are there in the first place is that they're rusted into oblivion.

Cory - We have body mounts on here: Suspension & Steering/Body Mounts.  But, as you'll see and get a chuckle out of, there's an excerpt from the LMC catalog in there.  And, there was no illustration for Broncos

But, I've added the illustration for Broncos, which does show the rear mount outside the frame, as you said.  Hope that helps.

Rembrant wrote

...Bronco body mounts are all either outside the frame rails, or on top of the frame rails, is that right?

Yes.

Rembrant wrote

The crossmember in question also has the contour in it for the front end of the mid-ship fuel tank.

Broncos have a crossmember made for a midship fuel tank, even though no tank was ever installed or available.  But now that I specifically look at it (far Right of this pic), that Xmbr does NOT have body mount holes, so it's probably the same as the first under-bed Xmbr on a pickup frame.