JohnRR thats exactly what I did, set it to 800 and dont really hear it anymore. Transmission could def be a possibility, its an unknown unit I bought many years ago. It does operate and shift normally from idle on upwards. How to test if its the noise?

PCV is new, but I can def look at that. I can try another one.

Good suggestions so far, thanks, keep them coming.

Mike

2008 Challenger SRT8
1940 Chrysler Royal coupe