What is the difference between a 42RH and 44RH

[64ValiantConv]

Does anyone know the difference? I've searched high and low...

 

[67Baccaruda]

42RH AKA A-500 AKA 904 based O/D trans
4 forward gears
2 duty rating
R rear drive
H Hydraulic valve body (control)

Never heard of a 44RH

46RH AKA A-518 AKA 727 bases O/D trans

 

[fishy68]

I haven't heard of a 44rh either but as baccaruda pointed out the 2nd # stands for the duty rating so if it exists it must be a beefy version of the 42rh. Or maybe it's the Jeep version of a 42rh and they rate the duty differently? Just a thought.

 

[Dorian]

2?

 

[fishy68]

2?

LOL ops:

 

[pishta]

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

 

[Revhendo]

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

 

[fishy68]

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.

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.