ehrhartc

I bought a 1999 FRC with a 6.0 motor with a spun #3 rod bearing. After tear down and cataloging all my parts, I am scratching my head on the cam specs.
On the front of the cam, it is inscribed with 3715R / 3712R HR 112 CCx 2870G 909612
In trying to determine the specs I came up with a Hydraulic Roller Comp Cam 2870G cam core prior to grinding
the duration sequence baffles me
3715R converts to 224 duration and 568 lift at 1.7 this is listed first
3712R converts to 218 duration and 563 lift at 1.7 this is listed second separated by a slash

is it possible the stamp is backwards? is the intake duration greater than the exhaust duration?
I know a common grind is 218/224....but I have not seen one like this.
if correct, what value in performance might there be? should I reuse the cam or go for a different grind.