Can anybody tell me the end compression with 9.5 and / or 10.5 pistons when using unworked SE heads (9.5-1)??

 

Try this,

http://www.bigboyzcycles.com/TwinCamComp.htm

 

I noticed in a previous thread you were talking about using an EV-27 cam. Don't use that cam with high compression pistons. It builds up too much cranking pressure. Send Andrew's an email asking them what cam they prescribe for your build. If I remember correctly they told me an EV-48 but I went with a Crane cam instead.

 

I'm going to use Comp's Vthunder once I figure out the end CR #'s probably the 3030

 

I looked up the v thunder 3030. Sounds like a good choice.

 

that calculator is out of my league..

 

My suggestion is to not worry about the final compression ratio. As long as you pick the right cam for your piston choice, you'll be fine.