Well in this video you can see the oil pressure gauge pretty well. It is the second to last gauge on the right. In the burnout and at the top end it is over 100psi. On the racepak generally we would see 110 or a bit more. Engine went 1000+passes this way with no ill affects and many while playing the game up top...

https://www.youtube.com/watch?v=bXBb9Jtatpk