what do i have hydraulic or solid lifter?

sorry i guess i should add more info.

I have the heads off and i will be putting them back on in a week or so. the motor has the edelbrock rpm performance kit. It cam with their rpm cam, lifters, intake, and carb. Also has Comp cams roller rockers.

I was not sure with my set up if i needed valve lash or not. when i pulled them out they all seemed to have no play.