I was bored so i was reading up on what the about cr will be of my gsr and i put thi info in

block b18c
head b16b
crank b18c
piston pct
connecting rod eagle
headgasket 2 layer
head milling .0
rpm 9400

and my static was 13.4:1 as was the effective

 

did you input your elevation? If you're above sea level your effective CR will be lower.

SCR is your compression @ sea level.