We have a noise that sounds like a piece of sheet metal resonating at about 3200 to 3400 rpm. I can actually feel the vibration thru the floor under my feet. I'm sure that it is a heat shroud of some sort that rattles and I just use it as another que as to what the engine is doing. I'm still growing my "trust" in the Ford V10 because I came from the diesel world of pulling a fifth wheel with a Duramax Chevy dooley.
Begs to question: How good would our unit be with a DurmaxlAllison combo for a power plant? Just a thought.....
2011 Georgetown 378TS in FireMist
2013 Jeep Wrangler Toad
Kirby the Old Dog, passed but still in our hearts
Max E. Dog, the new pup
Eureka the Old Cat, still hangin' on