Hey guys, i just bought a set of Comp Cams 1.85 ratio roller rockers, guide plates and studs. I just want to know what else i will need to install these. Do I use my stock push rods and lifters? Will my springs be too weak, is it absolutely necessary to change to a stiffer spring?

 

I don't know about your comp cams, but my crane 1.8's came with pushrods.