Quote Originally Posted by speedminded
How did you get 10.65:1?

instead of gsr bock with b16 head i swapped them around and tossed some p30's in the mix

Block = b16
Head = b18c1
Piston = p30
Head Gasket Thickness = OEM B-series 3-layer
Piston-to-Deck Height = OEM b16

Compression Ratio = 10.657