Ive had my 300I6 in my truck for several months now. No problems at all. Ive recently started to have a really weird vibration around 1700rpm though...but Ive thought nothing of it until reading that the 302 flywheel I used should not be used on the 300. Ive got roughly 3000k miles on it since assembly...so Imma make this right ASAP.

If I kept driving like it is...how badly can it screw things up? We talking bearing replacement or what? Ive been keeping it limited to low rpm use and I usually cruise just under 2000, about 1800-1900.

Its really not a BAD vibration...but you can tell somethings not right.

This...SUCKS. Mostly cause I have to spend money...and I have to take it all apart again. And I thought I did such a good job too on this swap.

 

The vibration is there all the time, you just don't notice it until a certain RPM is reached.

Sooner or later, usually sooner, the vibration will tear the center from the flywheel. Not pleasant!

 

Uh huh...well than. Thank you for that.

Im set to drive essentially 140 miles round trip this saturday and now Im wishing I didnt know all this until sunday. Poo...