hey guys, maybe you can help.. I've been running my savage x and when I do I get a weird clicking noise. I thought it was the diffs so I rebuilt them, it didn't go away, I thought it was the tranny, so I swapped it out, the noise is still there.. it won't do it on the workbench, only when running...

is it possible to have a rod knocking? I'm drawing a blank.. seems to me, I've pretty much replaced the drivetrain and nothing is helping.. any help would be appreciated.. thanks!