Race fuel like 110 or 112. At the pumps next to my house I have 94. Works well in my Camaro with 11.8:1.
I know if I put the N47 on as is should be around 10.4:1 This is what I found with Google.
How can I calculate compression ratio? F54 block with flat pistons and Felpro gasket. This is stock bottom end. Want to shave the head to be in the 11.5:1 / 12:1 ratio.