454cid
Sooper Pooper
All my trucks have that upper hose support bracket. Maybe it's time to investigate the motor mounts. I found that discussion from eons ago, it was started by @454cid but he caved and installed a new radiator. I have one more radiator in my possession and it's much newer, then I just have 2 broken radiators to swap into my 1500. Trying to be a cheap ass here, I already lit all my money on fire and then some with my racing addiction this summer.
I'm on my 3rd radiator in 300K miles.... Original, a US (Lockport. NY) made Delphi that was identical to the OEM except for no drain, and a TYC. I still have the original in the corner of my garage. That's the one that I had the tank replaced and a couple of years later the oil cooler popped inside. Theoretically I could probably still use it since I plugged the oil cooler ports on the block. The first two were 3 row, and the TYC is a two row with wider cores, so it should cool better. I was impressed when I got. It's made in China, but it looked fantastic... and I've built OEM radiators when working for a Tier 1 supplier. The only issue is that TYC made the neck a little too tall, so it rubs on the insulation. It's in between the proper height, and the HD neck height.
I'm in the process of cleaning my garage... when I get to the original radiator, I'll probably recycle it unless someone here really wants it.
My theory is that the upper hose bounces on the support bracket. After the second radiator cracked, I used zip ties to secure the hose to the bracket.