IIRC "blueprint" is 9:1...if you actually do the math (~63cc chamber, ~10cc dish on piston .060-.070 in the hole, .040-.050 head gasket), real-world compression is more like 8.25-8.75....

1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)