LB7: Allison 5 speed to 6 speed conversion

[sam_rork]

Thinking about building my 5 speed transmission to handle my current modifications to my truck then ran across the 6 speed conversion kit. Would this be the better option over a built 5 speed tranny? I’m mainly looking for fuel mileage On the highway and not tearing up my tranny when I want to have some fun.


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[rfletes79]

The 5-6 speed conversion will not allow you to put any more power down without building the trans. If you need a built trans to handle your power then build it, if you want the 6 speed then add the conversion to the built trans. Then you’ll have both.

I just did the 6 speed conversion in my 02, should have done it 10 years ago.

 

[sam_rork]

Thank you that was my next question. I think that’s the route I’ll go. Conversion then rebuild.


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[Mike L.]

Thank you that was my next question. I think that’s the route I’ll go. Conversion then rebuild.


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You're doing this backwards.

 

[DAVe3283]

You're doing this backwards.

X2, make the trans hold the power, then do the 6 speed conversion. The 6-speed conversion doesn't require removing the transmission, just the valve body, and can be done fairly easily at any time.

It is also possible to build the transmission and do the 6 speed kit at the same time, and you will save a little bit on labor this way. That is what I did in my Suburban.

 

[sam_rork]

What would cost be for building the 5-speed? I believe for my mechanical abilities I could do the conversion kit but how intense would the rebuild be for an individual that doesn’t work on Allison Transmissions every day be?


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[torqued2dmax]

What would cost be for building the 5-speed? I believe for my mechanical abilities I could do the conversion kit but how intense would the rebuild be for an individual that doesn’t work on Allison Transmissions every day be?


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If everyday means that you never did rebuild an Allison and you might have the ability to bolt on a valve body , you might wont to contact one of the great transmission guys on this site. Unless you love a challenge , then go for it !

 

[sam_rork]

Still wondering on cost ($) valve of the project? Anyone have any recommendations on who to go with doing a project like this in the Kansas area?


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[torqued2dmax]

Still wondering on cost ($) valve of the project? Anyone have any recommendations on who to go with doing a project like this in the Kansas area?


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Call the guy in sheeps clothing !

 

[trjanousek0802]

Call the guy in sheeps clothing !

Ok I do not find this comment very helpful? He is wanting to know if you do a 6 speed conversion. Can you then rebuild it as a six speed? Because a 6 speed rebuild is a lot cheaper then a 5 speed. Again looking for help not sarcasm. Thanks



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[Chevy1925]

Ok I do not find this comment very helpful? He is wanting to know if you do a 6 speed conversion. Can you then rebuild it as a six speed? Because a 6 speed rebuild is a lot cheaper then a 5 speed. Again looking for help not sarcasm. Thanks



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use the search function and start reading.

 

[Mike L.]

Ok I do not find this comment very helpful? He is wanting to know if you do a 6 speed conversion. Can you then rebuild it as a six speed? Because a 6 speed rebuild is a lot cheaper then a 5 speed. Again looking for help not sarcasm. Thanks



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There was no sarcasm posted. Who ever told you that a 6 speed was cheaper to build than a 5 speed?

 

[TheBac]

Still wondering on cost ($) valve of the project? Anyone have any recommendations on who to go with doing a project like this in the Kansas area?

Conservatively $5-6K if you have a shop build it. LOOK IN OUR VENDOR SECTION for MikeL (Inglewood Transmissions) or Evan (Limitless Diesel Perf) for their phone numbers and call them about your options. Evan sells a kit if you want to do it yourself. I am not sure if there are any competent shops near you to do the build.

Ok I do not find this comment very helpful? He is wanting to know if you do a 6 speed conversion. Can you then rebuild it as a six speed? Because a 6 speed rebuild is a lot cheaper then a 5 speed. Again looking for help not sarcasm. Thanks

How about you do some searching and reading around here before opening your mouth? "The guy in sheeps clothing" is MikeL. So torqued's post was helpful.

 

[trjanousek0802]

Conservatively $5-6K if you have a shop build it. LOOK IN OUR VENDOR SECTION for MikeL (Inglewood Transmissions) or Evan (Limitless Diesel Perf) for their phone numbers and call them about your options. Evan sells a kit if you want to do it yourself. I am not sure if there are any competent shops near you to do the build.



How about you do some searching and reading around here before opening your mouth? "The guy in sheeps clothing" is MikeL. So torqued's post was helpful.

So then explain the Statement “The guy in sheeps clothing” because that was very confusing and misleading to us that had no idea what that means and for being new to this “Tapatalk”. But thanks for explaining who it is and about the “Vendor Selection”.


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[TheBac]

Its a long time joke concerning Mike, so leave it at that. Not our problem that you dont understand it.

 

[trjanousek0802]

Its a long time joke concerning Mike, so leave it at that. Not our problem that

If it’s a long time joke then the Average Jo would have no idea what you were talking about. It came off kinda sarcastic because he was asking for someone in the Kansas area.


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[six5creed]

Its a long time joke concerning Mike, so leave it at that. Not our problem that

If it’s a long time joke then the Average Jo would have no idea what you were talking about. It came off kinda sarcastic because he was asking for someone in the Kansas area.


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"He" doesn't have a problem with it, you shouldn't either.

 

[Mike L.]

Its a long time joke concerning Mike, so leave it at that. Not our problem that

If it’s a long time joke then the Average Jo would have no idea what you were talking about. It came off kinda sarcastic because he was asking for someone in the Kansas area.


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How long are you going to continue with this stuff?

 

[sam_rork]

First off I’ll add is wow!!! And I’ll also add I had no clue what the sheep phrase meant either I just simply went on with life and didn’t respond to your bs end of story. Ok it’s a joke between you guys that’s fine but I didn’t know that neither did tjjanousek guy end of story. Now let’s move on!! This is to “thebac” for your information I have been doing my research in a search bar and getting ideas and this forum was part of my research and you guys are not really giving much useful information thus far. But I will be sure to keep keying away in that search bar and find that next crappy website that said a 6 speed rebuild is cheaper, thus proving my point, everything on the internet isn’t true! Thanks everyone I’ll keep looking lol!!


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[Trimox]

But I will be sure to keep keying away in that search bar and find that next crappy website that said a 6 speed rebuild is cheaper, thus proving my point, everything on the internet isn’t true! Thanks everyone I’ll keep looking lol!!

A 6 speed conversion is cheaper than a rebuild. $1600-2300 depending on who you buy from. This will not replace any clutches or steels.


You can go with an upgrade kit which will have clutches and steels with other assorted parts but still not a full rebuild. Does not get you the 6 speed conversion.


Full rebuild will replace all clutches, steels, springs and other wear parts in transmission. This still will not get you the 6 speed conversion.


Like TheBac said $5k-6k will get you a good rebuild. That will still not get you the 6 speed conversion. So $6.6k-8.3k for both.


Just so you know the 5 speed and 6 speed are the same transmissions are the mechanically the same. The valve body and electronics are different. That is put very simply.