What will my 68 Dart 408 run in 1/4 mile?

68Dart500 said
How often do you have to fill them up? They Sportsman Pro's are on there way and I'll be running them tubeless (or at least I'll try).

Once a year when I take it out in the spring

Or after I air down for the strip. I run 18 or 19 at the strip. 25 on the street. 40 up front.