Turbo parts #'s

[LowTech]

Could use some help here :-/
Seems like the "C" turbo we sold has a dif part # than what is suppose to be on it.
I'm told that the "C" has the part #3LJ-319, and ours is #3LD-305. I'm not looking to sell this guy something that's not what I said it was.
Does anyone know these part #'s, or where I might find the info?
As far as I know this was a "whistler", based on the sound that we listened to for a year and the photos comparing "C" & "D" turbos.

Thanks,

(it seems that the # matches up w/ the "old style". Is that still a whistler and what would be the difference between "old" & "new"?)

 

[stb64]

The 3LD305 is the first turbo model, used only on early LDT465-1C engines.
The the common whistler ist the 3LJ 319, factory original on LDT465-1C AND -1D
The non-whistler 3LM39 was used only on the LDT465-1D.
All turbos were used by the military as a replacement on both LDT models and even on LDS engines.
The C & D turbo designations have been used for many years by many people, but are made-up designations, and are not used by the government or schwitzer, so you will not find them on the data tag or in the manuals.

 

[LowTech]

Thanks, so does that make it an "early whistler"?
I sold it as a whistler based on what we listened to for a year and now I may have to reimburse the buyer. Does it have a dif value? is it something special, or rare? . . . or maybe not wanted at all?

 

[stb64]

If you sold it as a whistler, and it does whistle, you are good.
The 3LD305 is definitely special and rare, why it was replaced by the 3LJ, i don´t know, it may just have been discontinued.
However, this turbo can be seen in most LDT pictures in the manuals.
I would love to have one for my collection.

 

[gimpyrobb]

In addition, many have reported higher boost levels with that turbo. If the deal goes "south", Let me know.