How to ID tranny for build.....

[dmaxfireman]

What do I need to find to identify if a tranny is a 5 speed or a 6 speed?

I have already gone to the allison website and ran the serial number and it did not say. Can I tell by dropping the pan and looking at the valve body?

SN: 6320028075
Date: 01F06

would the date be jan 06 or june 01 or am I way off?

I'm all excited at what I found :happy2: So far all it needs is a bell housing (cracked kindof like ben's) and a nsbu (rolled on side and broken). other than that looks ok on outside and even came with tc core. plus the best part, it was free i'll try to tear into it this afternoon if i have time and see what the guts look like. all i know so far is that its a 4wd and aside from the bellhousing the case looks good.

 

[Brian1]

Never mind on this post. Thought you referred to your own in the truck. Not a core one.

Brian

 

[Kat]

If you can see the nsbu I would guess 5 speed. Iirc the nsbu is internal on 6 speeds. Mike correct me if i'm wrong.

 

[A_T_Ver]

I believe Kat is right

 

[dmaxfireman]

just checked my trans, no visible nsbu bummer

so to make this work in my truck (six speed) i would have to do a full transgo, and swap valve bodies? what about the nsbu?

 

[ripmf666]

Have to get Mike or George to answer that one but I dont think it will work for you.

 

[dmaxfireman]

that sucks that thing was like a magnet, just hopped in the back of my truck this morning and begged me to take it home.

anybody need a 5 speed core and converter or want to trade for a 6 speed core?

 

[ripmf666]

Send George BigDipper a pm he might take that one and have a core or something laying around hard to tell.

 

[03 D-max]

send it to george and he can build it for me that way my truck wont have much down time