What is the difference between a 42RH and 44RH

pishta said
maybe a 998/999 based OD? But they were 904 based...dunno.

It is a 904 based OD trans. 42rh is 904 based. 46 rh is 727 based. They are also known as A500 and A518's.

Revhendo said
OK, I'll play. What's a duty rating? Maybe a 44RH is for a 4wd? Just call me clueless in Costa Mesa......

The torque handling capacity. The higher the 2nd number the more power it'll handle.