Originally posted by techinspector1
Tom, that 10/1000 rule of thumb came from Smokey Yunick, God rest his soul. I'm sure that by the time he passed, he'd forgotten more about internal combustion engines than you and I together will ever know.
I respect Smokey as much as the next guy (gotta love the 15/16ths Chevelle!), but more engineering went into the big threes cars than Smokey could ever have dreamed of. Watch the oil pressure guage on any car you are in. My Ranger, even at 90 MPH won't be less than 35 psi or more than 55 psi.

I can see upping the pressure on an engine built 'loose', but when running normal clearances this extra pressure is not needed. Check with NASCAR teams running engines at 9000 rpm's and I'll guarantee you they are not running 90 psi.

The LS1 style engine going in the Stude is being set up with the stock clearances as a guide, and I don't plan on raising the oil pressure any.