Details matter.
For giggles, for a .030 over 426W
90 cc head, .039 head gasket, .050 deck...... less than 9 to one.
88cc head, .025 head gasket, 010 deck....... slightly over 10 to one.
75cc head, 039 hg,.050 deck...... 10.16 to one.
75cc head, .025 hg,. 010 deck......11.58 to one.
All above...