Yeah, older trucks did it too,
I've had a 96 350 that shook, a 99 250 that didn't shake, a 00 350 that shook and have a 06 450 work truck with an 11 ft service body that shakes like a crack whore from 36-39 and 55-68
My 14 350 also has it at 44-45, I just try to not drive that speed.