What are you using ?

You only need to go as fast as your ego demands. On a flat tappet motor, it is much less expensive to use 10-30 or 10-40 with a zinc additive. My 67 Barracuda ran 11.08 on a hot day at Bakersfield in 02. My buddy ran 10.95 at Vegas in a 70 Dart this year. Both motors are 360's with 30 weight dino oil with Hughes additive. Both engines have 70 lbs when on it and 30 at idle hot