340 Static Compression Numbers and Test Procedure

340inabbody said
Early forget what years pre 67? timing marks were on a bracket on the passenger side. That definitely would require a different mark on the damper. Way different not 6 degrees different.

Since we're already in the weeds here's my two cents. Pictured is a 360 mopar and 350 chevy crank. It appears the standard ( if there is one) is to line the keyway up with the crank pin. The timing marks are probably placed where it is convenient to get a line of sight ( right or left side ,etc.). Then the balancer is marked accordingly.