Accelerator pump size

Depends on the cubic inch. My 318 gets by with dual 30s but the 390 has a 30 primary and a 50 secondary. You can change jets up and down to accommodate. The truck goes to an immediate 11.0 as soon and it is at WOT. But then settles in to a 11.8-12.2 once the rpm come up. With the 50cc secondary it would bog to a 10.0 and never really recover much past a 10.9.
Just use what works the best. Read the plugs.