440 break in noise from timing cover....we think....be gentle!

Muswagon said
I should have mentioned the dizzy shaft but it didn't hit me until I watched a few installs and they go in like butter

There's a tool to install and size a new bushing correctly. Check the FSM.
A backward oil slinger will make a lot of racket if the concave side is installed inward as it would have contact with the timing chain.