Is there a t-case that fits a 4he1 with 5 speed auto Aisin trans? Setting up a 4x4 conversion

Instyle555

New member
I am buying either a:
2009 w4500 with a 6.0l gas
or a 2006 npr with 4.8l diesel

I know I can get a transfer case for the gas truck, but is there one that will work with the diesels Aisin? I need the109" wheelbase so a divorced tcase isn't an option.

Thanks in advance.
 

SkiFreak

Crazy Person
As an aside... it is useful to know where you are located, as different locations have different options.
 

javajoe79

Fabricator
I don’t know about the aisin but if something custom needs to be made, I can help. Otherwise the GM options are easy like you said.
 

mainer0311

New member
Please correct me if I’m wrong, I’ve been doing some research on this same topic. I’m in the US so years and options might be different?

The 4he1 was discontinued in 2004 and replaced with the 4hk1 in 2005?

The AW450-43LE 4 speed automatic was used until 2006.

In 2006 the AS68RC/A465, 6 speed automatic, was introduced. This transmission was also used in 09-13 dodge 3500/4500 cab chassis, and later, in a wider range of trucks, as a slightly different AS69RC.

The dodge AS68RC or AS69RC 4wd extension housing and output shaft should bolt to the Isuzu transmission. This gives you the option to use a dodge driver drop 29 spline NV/NP 271 or 273 (manual/pushbutton 4wd) transfer case.
 

nic.lac

New member
Please correct me if I’m wrong, I’ve been doing some research on this same topic. I’m in the US so years and options might be different?

The 4he1 was discontinued in 2004 and replaced with the 4hk1 in 2005?

The AW450-43LE 4 speed automatic was used until 2006.

In 2006 the AS68RC/A465, 6 speed automatic, was introduced. This transmission was also used in 09-13 dodge 3500/4500 cab chassis, and later, in a wider range of trucks, as a slightly different AS69RC.

The dodge AS68RC or AS69RC 4wd extension housing and output shaft should bolt to the Isuzu transmission. This gives you the option to use a dodge driver drop 29 spline NV/NP 271 or 273 (manual/pushbutton 4wd) transfer case.
Reviving a bit of an old thread here, but do you by any chance know if the AW450 and AS68RC would be interchangeable?
IE coult the AS68RC be bolted onto a 4HK1 that had the AW450 previously?

I assume I would need the ECU of a truck having that 6sp transmission as well to do the swap.

Thanks!
 

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