Echlin #VC-1810 advance can or equilivant

34 + 24=58*
Wouldn't that be too much ? The reason I don't use it now as it is Pinging.
I don't know as much as you think but wouldn't I need less travel say 34 + 12 ? That vac can is my weakest link on the subject . I read 50 max with can but also read that Bigger motors want more ? Motor is a 10-1 500 stroker with Eddy heads.