I'm doing a LT4 chain install as well as some other stuff, and noticed my bearing was a little rough so I chose to replace it. I went around town and saw that the replacements were sealed with the black thing on the side that covers the center of the bearing, and the stock one had it exposed. Should I find one like the stocker that's open, or will I be fine with an enclosed bearing? I'm worried that lubrication may be a problem with the enclosed bearing.

 

Get the one with the seals and just pop the seals out..There very easy to pop out!!