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As many of you may know, I recently picked up a '75 GMC C35 dually which is in really good shape. I"m gonna buy a GN trailer and tow my junk around with it.
The PO installed a gooseneck hitch and it appears that it's NOT bolted/welded to the frame. It's just bolted to the bed.
Is that correct? I see lot's of GN hitches online that appear to be the same..
There is a structure bolted to the frame. What you are seeing is the bed being sandwiched between two plates or two rails or something like those. But, there should most definitely be something bolted to the frame.
1977 Cherokee S, Ford 5.0, 5 speed, BW 1356, 33 x 10.50 BFG's. No longer my DD.
2007 Mercury Milan, 2.3L, 5-speed, now my DD. 29 mpg average.
Derf is correct, look under the bed at the frame. Is it a steel square with ball? The frame mount will be directly under. With frame mount it is very solid, but you loose use of bed space. "Hidden" hitches were very spendy and hard to work when your rig was new.
If your mount has ball on large plate attached to tracks in bed then you may have a 5th wheel hitch with gn conversion kit. Still should be mounted to frame.
79 Cherokee WT QT Golden Eagle white with gold windows "Pigger" only blows hubs the night before a road trip or the clodest night of year. Has only been towed cause of stupid.
Ok so the dually came with a bed mat installed which was covering the GN hitch. I removed the bed mat and power washed the bed. Sure enough, 100% rust free
Anyways - the GN hitch is a bed mounted unit that has 4 1/2" bolts that go through the top of the frame. Grade 5 bolts at that. It seems the plate has bent / crushed the bed a little bit from the GB pin weight. The ball itself said max of 6000lbs.
Thats probably ok for a light trailer, but more modern hitches are much more robust than that. None of the weight should be applied to the bed with a newer hitch.
My old F150(yes, 1/2 ton) had a GN hitch on a MASSIVE plate that occupied most of the bed mounted only to the bed. Not sure what they towed but did a number on the metal and was not reinforced to the frame.
As for the B & W hitches.....they work
82 J10
77 J10 Golden Eagle 401
88 GW
You know it's bad when your car is on the EPA's 10 most wanted list!