88cc 906 to a 72cc AL head?

[tooslow]

I am replacing a pair of 88cc 9o6 heads with 72cc Al heads.
My dynamic CR should increase aprox a point and 1/2 correct?
Ex Was 9 to 1 with 88cc heads
Will be 10.5 to 1 with 72cc heads
Heads have 10Deg locks but only running a MP 528 lift cam
Will 10Deg be Ok?

 

[Leadfoot]

http://www.csgnetwork.com/compcalc.html

 

[tooslow]

Thanks 'LEADFOOT"