this is my 1st time installin double valve springs...does anyone got any advice or info on this..thanks

 

They aren't any more difficult to install than single springs. It may take a bit longer if you're swapping out your seats and/or seals, but that isn't a difficult thing to do.

Josh

 

Having the right valve spring tool will make it easier. After numerous (too many to count) valve spring swaps, we worked with Crane Cams to build a tool to ease the r&r of the dual springs. If interested, here is a link to the tool.
http://www.vincihighperformance.com/...TS%20PAGE.HTML