2000-2500 rpm vibration 5.0 L GL

[mbram]

We bought a different boat last fall. 04 Caravelle with a 5.0 L GL. It seems to have a slight vibration in a certain RPM range 2000-2500 RPM. I have had older V8 cars with things like this, kind of normal quirks for certain manufacturers. Is this normal?

 

[gbeltran]

How is the prop? Bent/nicked blades can cause vibration. How many hours? Gimbal bearing, ujionts, could be those also, especially if they weren't regularly serviced.

 

[Augoose]

X2 on the u-joints

 

[mbram]

It is at about 380 hours. Prop is ok- it is worn. I need to get a back up and I could check it by switching it out.

 

[mbram]

I have paid more attention to the vibration. It seems to vibrate more when turning. Am I correct in saying this points more toward U Joints?