Question: Do I have this right?

[Car RamRod]

Weeeee.... fun with Mikey....

I would think a guy that tunes these truck would know this better than I would. The TCM is just a box that controls the trans to me, what goes on it there I could care less about. I'm not sure what your whole point is here, but if you really and truly want to know, ask someone who isn't asking about the same things. Maybe you can ask and get a strait answer. I tried what I have and it works. I figured posting the question here would get me a strait answer from a trans professional, I was wrong, but I did get the help I needed from someone willing to help rather that string out vague answers.

 

[jc1843]

Yes I did search...

I'm finally getting around to swapping the LBZ into my 03. My 03 is a 4wd and the doner truck is a 2WD. I've read on here about swapping the VB, NSBU and harness from a 6speed into a 5speed and it becomes a 6speed. Is that right? I'm trying to decide the best route to go here.

Make the 4wd 5speed into a 6speed

or

Make the 2WD 6speed into a 4WD


I'm also looking for a good deal on a 6speed 4WD....

NO, you cannot swap the parts into a 5 speed to make it a 6 speed. That requires a modified valve body and a moded TCM.

You will be better off using the 6 speed trans with the LBZ because the system operates on a different operating system. Mike L will give you assistance.

 

[SmokeShow]

NO, you cannot swap the parts into a 5 speed to make it a 6 speed. That requires a modified valve body and a moded TCM.

You will be better off using the 6 speed trans with the LBZ because the system operates on a different operating system. Mike L will give you assistance.

You clearly didn't finish reading the thread before posting...

 

[Cougar281]

NO, you cannot swap the parts into a 5 speed to make it a 6 speed. That requires a modified valve body and a moded TCM.

You will be better off using the 6 speed trans with the LBZ because the system operates on a different operating system. Mike L will give you assistance.

It's already been addressed, but YES YOU CAN swap a STOCK 6-speed VB & harness into a 5-speed trans and use it with a STOCK 6-speed TCM.

What you're saying only applies to trying to make a LB7 or LLY into a 6-speed.

 

[MMLMM]

Weeeee.... fun with Mikey....

I would think a guy that tunes these truck would know this better than I would. The TCM is just a box that controls the trans to me, what goes on it there I could care less about. I'm not sure what your whole point is here, but if you really and truly want to know, ask someone who isn't asking about the same things. Maybe you can ask and get a strait answer. I tried what I have and it works. I figured posting the question here would get me a strait answer from a trans professional, I was wrong, but I did get the help I needed from someone willing to help rather that string out vague answers.

Lol, you were giving me vague answers....

I have a pretty good grasp on this man, so it has nothing to do with whether I tune or not..

I had a simple question for you, you didnt have to get all sarcastic about it.

:beer2:

 

[Car RamRod]

You confirmed what I figured all along, you for whatever reason want to dick with me...I was just asking questions and passing on the info I found, my bad if that disturbs you buddy.

Lol, you were giving me vague answers....

You may want to bust out your reading glasses on this one dude. You asked how my TCM from a 2WD truck works in 4LO. I said I don't know, never tried it. How is that vague? Then you want to be a smartass and ask if I truck pull and get butthurt about the answer....hahahahaha

I have a pretty good grasp on this man, so it has nothing to do with whether I tune or not..
You have a good grasp on it huh? So why you askin again?
I had a simple question for you, you didnt have to get all sarcastic about it. No you didn't, you decided to be a jerk for whatever reason, so yes, I was sarcastic.

:beer2:

Mike, have a beer and relax, maybe tomorrow you can work on solving the troubles in your life. :hug:

For anyone that really does want to know, the 2WD TCM works fine even in 4low, I went ahead and tried it.

 

[MMLMM]

You confirmed what I figured all along, you for whatever reason want to dick with me...I was just asking questions and passing on the info I found, my bad if that disturbs you buddy.



Mike, have a beer and relax, maybe tomorrow you can work on solving the troubles in your life. :hug:

For anyone that really does want to know, the 2WD TCM works fine even in 4low, I went ahead and tried it.

Buddy your getting me wrong and taking this the wrong way.....I never had an issue with you? I still dont because I can see you are misunderstanding me.

Let me be a little more clear...

You wanted to know if the TCM would work. You dint really get a good answer so you tried it then posted "Works fine" <- that confused me knowing there are parameters in the TCM for 4lo. So asked if it worked in 4lo? And you came back with sarcasm I guess "for What?" Then to add to it I for some reason thought you did work stock sled pulling, and when I asked if you did any sled pulling, you ASSumed I was being a dick??? So you came back with another negitive post to me. I didnt get why you posted "If I did I prolly woulda dropped it in 4lo at some point huh?"....

So I gave up thinking maybe you dont like me or something and didnt feel like sharing w/ me or if you were screwing with me. I was pretty sure using a smile face and a beers cheers would help you understand I was tring to talk nice....

SO.. I posted my last post and trying to reason with you so you might be able to see what I am saying. IE: vague would be you saying "for what, and bla bla miles w/o 4lo, and you think I would put it in if I did" when you could have said, I dont know, I didn't check...

And just because I tune trucks, doesnt mean I tried a 2wd tcm in a 4wd? Why do you bring that into it??? What does that have to do with anything??

And how in the hell is "witha 2wd cal? What happens when you go into 4lo...." NOT A SIMPLE QUESTION????

So go on and again assume things about me dude. Maybe post some more insults about me if that's how you get off :thumb:

EDIT: Im done and putting this behind me. I wasnt trying to be sarcastic, If I was I apologize. Lets agree to move on..Im not looking to piss anyone off, or stir shit up.

 

[bluessmax]

Ramrod- you get alot more help here and respect if your just nice man, I did not see any sarcasm or anything from Mike besides trying to help you a little bit..this is a laid back Dmax forum with guys just wanting to help...let's keep it all laid back and friendly..I was looking at the forum and nearly posted until I seen the sarcastic comment to mike...no need for that let's keep this thing laid back and helpful.

 

[Car RamRod]

Buddy your getting me wrong and taking this the wrong way.....I never had an issue with you? I still dont because I can see you are misunderstanding me. Really? I never said there was an issue.

Let me be a little more clear...

You wanted to know if the TCM would work. You dint really get a good answer so you tried it then posted "Works fine" <- that confused me knowing there are parameters in the TCM for 4lo. So asked if it worked in 4lo? And you came back with sarcasm I guess "for What?" I've put a alot of miles on my truck and never needed 4low. Upon swapping in a new engine and trans I get asked if it will work, so I asked what I would use it for.Then to add to it I for some reason thought you did work stock sled pulling, and when I asked if you did any sled pulling, you ASSumed I was being a dick??? No, you ASSumed...I said you were dicking with me not being a dick...AKA screwing with, big difference...So you came back with another negitive post to me. I didnt get why you posted "If I did I prolly woulda dropped it in 4lo at some point huh?"....
What do you expect when you ask me if I use a function of my truck, I say no, then you ask about using my truck to perform an activity that would utilize said fuction? So I gave up thinking maybe you dont like me or something and didnt feel like sharing w/ me or if you were screwing with me. I was pretty sure using a smile face and a beers cheers would help you understand I was tring to talk nice....

SO.. I posted my last post and trying to reason with you so you might be able to see what I am saying. IE: vague would be you saying "for what, and bla bla miles w/o 4lo, and you think I would put it in if I did" when you could have said, I dont know, I didn't check...giving you a detailed explanation is not vague by any means.

And just because I tune trucks, doesnt mean I tried a 2wd tcm in a 4wd? Why do you bring that into it??? What does that have to do with anything??
pretty simple as stated, the TCM program is a file or tune the same as what's used in the ECM right?

And how in the hell is "witha 2wd cal? What happens when you go into 4lo...." NOT A SIMPLE QUESTION???? :happy2: when did I didn't say it was? how is " I don't know" a vague answer?

So go on and again assume things about me dude. Maybe post some more insults about me if that's how you get off :thumb:I would have to post some first to post some more....

When I detailed cars on the side one of my customers didn't listen to the radio in his truck, he was tone deaf. He told me he never turned it on, I didn't ask him if he listened to 91X...

I like to modify stuff, sometimes I have questions, I share the answeres I find...

 

[Car RamRod]

In conclusion: I bought a $550 six speed allison and installed it with my LBZ. I used a TCM from a 2WD truck and it works fine. I tried 4lo and it works too.
I had a LB7/5speed alliand it was awesome, now I have a LBZ/6speed alli and its awesomer...:thumb:

 

[SmokeShow]

Did you have to change the TUNE in the TCM in order for things to work or do you mean the TCM still has the 2wd tuning in it and it controls the 4lo as such???

I *think* that is what Mike was wondering? If not, I am. And no, I am not being sarcastic or picking or anything... Just trying to udnerstand exactly how you are setup to have the truck perform appropriately.

Thanks for sharing. :beer

 

[bluessmax]

In conclusion: I bought a $550 six speed allison and installed it with my LBZ. I used a TCM from a 2WD truck and it works fine. I tried 4lo and it works too.
I had a LB7/5speed alliand it was awesome, now I have a LBZ/6speed alli and its awesomer...:thumb:

Good price on the tranny! Also good to know the tcm works too, thanks for sharing!

 

[Cougar281]

Did you have to change the TUNE in the TCM in order for things to work or do you mean the TCM still has the 2wd tuning in it and it controls the 4lo as such???

I *think* that is what Mike was wondering? If not, I am. And no, I am not being sarcastic or picking or anything... Just trying to udnerstand exactly how you are setup to have the truck perform appropriately.

Thanks for sharing. :beer

I THINK 2wd & 4wd TCM's have the same programming. All 4lo is on the TCM is a grounded input to tell the TCM that it's in 4lo, H5061 that tells the TCM what the gear ratio is for 4lo, and 4lo shift tables. Having those tables in a TCM in a 2wd truck won't hurt anyting as the input will never get grounded, so the TCM will never think it's in 4lo and those shift tables will never get used. They'll just be there.

 

[Mike_S]

Where is your VSS located?

 

[SmokeShow]

I see, thanks cougar

 

[Car RamRod]

Did you have to change the TUNE in the TCM in order for things to work or do you mean the TCM still has the 2wd tuning in it and it controls the 4lo as such???

I *think* that is what Mike was wondering? If not, I am. And no, I am not being sarcastic or picking or anything... Just trying to udnerstand exactly how you are setup to have the truck perform appropriately.

Thanks for sharing. :beer

There were no programing changes on mine. The I used an engine from a 70 classic, trans from a 06 4wd, wiring and computers from 2WD 3500 C&C, I tried the 4lo and it worked fine.

Good price on the tranny! Also good to know the tcm works too, thanks for sharing!

Yeah I'm happy with what I got for the price, it just needed a small part to fix it, the fluid was nice and clean too.

Where is your VSS located?

the tail housing of the T-case

 

[Mike_S]

There were no programing changes on mine.

(the VSS is located in) the tail housing of the T-case

These two statements make me believe that the programming and the wiring are the same. On the 4x4 trucks the TCM needs to know when the t case is in low because it compares the input and output shaft speeds and taking into account the gear that is engaged it calculates the relative speed that they should be turning. When the t case is in low, the output shaft will be spinning slower than what the TCM calculates it should be, therefore it will think that the trans is slipping and go into limp mode.