Small Block & Big Block Chevy Specific - rockers

hi i just got some vortec heads and they sent me stamped rockers. I was planning on getting 1.5 roller rockers but since i have these rockers i might not...Is it worth getting the roller rockers? and are the stock rockers 1.5:1? I have a comp cam 270H..

Stock rockers are 1.5's.
If you got roller rockers they need to be self aligning, unless you had guideplates installed.
You probably won't notice any gain in swapping.

alright thanks for the help....will the rockers be good enough for the cam i have?

.470 lift?
Shouldn't be a problem at all.