How much oil is up inside a running engine ?
This situation is certainly a plus...
"...our Performer RPM, valve placement and port size limited the space for oil drain-back holes," says Garcia. "The Performer D-port drain-back holes were modified slightly.
Performer D-port valve spacing is the same as an original Pontiac casting, so we were able to lengthen the oil return trough, giving oil a quicker path back to the pan."
https://www.motortrend.com/how-to/hp...ylinder-heads/
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE