That combo is actually a 461" .060 over is a 468. We're running a similar setup in a 3700 LB plus Biscyne, but better heads and bigger cam (.660) roller. We have run 10.56@126mph.
I'm thinking you can run 11.30 to 11.70, i did a little over 20yrs. ago with the same setup in a 65 chevelle.
JMO
Zip.