Have a 61 Vette with a newer totally rebuilt 327 block, Edelbrock top end stuff. It seemed to be running high oil pressure for awhile (55-60 cold, 35-50 hot)...higher than it did right after rebuild.

Last week I noticed big oil leak under car (never leaked before). There was oil sitting up on the intake manifold as well. I retightened valve covers, filled with oil and it doesn't seem to leak up top...having a hard time see where leaking is coming from.

There is a NEW tapping sound...checked lifters and they seem tight. Any easy way to check to see if it's in a rod somewhere?

Here's video so you can hear it:https://youtu.be/35-uWjpaKYY

any ideas appreciated....hate to break it down to much as it's pretty newly built.