hydraulic lifters

Not sure, they are the ones that came with the edelbrock cam.

If I do need to replace them what will I need to know?

I know for pushrods you need to measure when ordering but not sure about lifters.

Any recommendations?

I'm not very experienced on cams and lifters, but I thought I would ask the questions to keep your post up and possibly help you get someone that is. :-)

I know one of our members went through this with his not long ago and had to change a few out.