For a 361, not unusual... Didn't we have this "discussion" with Ben Walker a while back???
If it was a 440, I'd be giving it more gas..
Edit - oh, you weren't asking me!
ROFL!! I almost put in there for everyone else to hold off, figured I didnt need it...I guess I did!!!
That plug came out of the 361 while it was turning about 11,000....rich..