Power - Lok ID???

Have a 19 spline D44 power-lok that I need a quick ID on.
Case is marked D44 STD followed by C30761
Rollstamped on the perimeter: 3 7 80 AH 21920X

Need to know if this is for 3.73 and up ratios (up to 5.38)
Thanks in advance.

 

STD marked cases work with 3.73, and numerically lower gears, AUTO marked cases work with 3.92, and numerically higher gears

 

After a search, I found this:
Dana 44 19 spline Series 3 (Auto) 3.73 and higher
One #23116X posted on forum DOM = 12-9-68
One #22017X posted on forum DOM = 12-18-0

Dana 44 19 spline Series 4 (STD) 3.92-5.38
One #23181X of mine DOM = 4-29-63
One #21920X of mine DOM = 2-17-83

Which is contrary to the info you just posted........................?

 

That's backwards John. STD marked is for 3.92-5.38 gears and AUTO is for 3.73-2.54 gears on a Dana 44.


Sent from my iPhone

 

^^^Thats what I meant...