Compression numbers are all real close this is good and leakdown is less than 10% also good. I'd say compression is not 10:1 for only 140 PSI. My 9:1 451 pumps up much more than this.

Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451