Strange ticking/rubbing noise
 

Hi All, Hope you guys can help me out....You have always been able to in the past. I just rebuilt the 454 mag in my boat(dropped the oil pump pickup and engine no likey no oil) After the rebuild I installed the engine and test ran it on the hose for about 20 min. Everything ran fine, great oil pressure, great temp, ran great. I changed the oil and filter and then headed for the water. I put the boat in and ran it around for maybe 10 min. I raised the engine hatch to see if I had any leaks of any kind to find a strange ticking/ rubbing noise coming from the rear of the engine. When revved up it speeds up and becomes more of a rubbing sound. Almost as if something is rubbing the coupler cover(bellhousing). I'm getting ready to tear into it, but wanted some possible problems to look at. I checked the alignment when I installed the engine, as well as a new gimbal bearing. Any thoughts? Thanks in advanced! Anthony

the tin cover plate on the bottom half of the bellhousing rubbibg the flywheel, did that once, had kind of the same sound.

Thanks for the reply, but I don't have the plate at the bottom of my coupler cover. I can look down towards the bottom and see the bottom of the flywheel.