Help: Special Tools Needed to Build 5spd/6spd Allisons

Bdsankey

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Feb 1, 2018
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I am wondering what all is recommended to go about building these transmissions in terms of special tools?

We own a shop in the Upper Peninsula of MI and recently got setup with Goerend for all of our transmission needs due to customers asking us to build transmissions.
 

Hambone

Always learning
Jan 24, 2016
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Dude... people stuff parts in transmissions and call themselves builders,
Same thing with motors. Do yourself and the customer a favor and just call up someone like Mike or Evan etc... some things are better left to professionals:thumb:
 

Bdsankey

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Feb 1, 2018
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Dude... people stuff parts in transmissions and call themselves builders,
Same thing with motors. Do yourself and the customer a favor and just call up someone like Mike or Evan etc... some things are better left to professionals:thumb:

I mean yes, I wouldn't disagree. But I also would say it isn't hard to build a trans.

Evan or Mike had to start somewhere.




Obviously you don't immediately just start slamming them out the door. You work through improvements and getting better on your own stuff first before you even attempt to build a trans for a customer.
 

Evan@InglewoodTrans

yerp
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Aug 5, 2010
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I mean yes, I wouldn't disagree. But I also would say it isn't hard to build a trans.

Evan or Mike had to start somewhere.




Obviously you don't immediately just start slamming them out the door. You work through improvements and getting better on your own stuff first before you even attempt to build a trans for a customer.

Yes we did and to save people a lot of time when you start as a dealer with me you get all the part numbers for those tools and I walk you through your first builds and I’m always there for a text or call after so I know you’re building something I’d allow my name on.
 
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THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
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I'm not a big name builder, but I've done a few. I can tell you that you NEED to sit down with somebody who knows how to BUILD one as there is more to it than just putting a kit in or throwing parts into one. It's also about knowing what not to put in, what to upgrade, where to customize, what needs special attention, where to source what to get your desired goal, and it's different depending on which clutches you use or how you interchanged parts. And be carefull because there is some builders to stay away from as well.

Most anybody can drop a kit in one, but it's the extra's that have been learned through building them that have allowed us to hold the power they can now hold for any length of time.
 

Ne-max

I like turtles
Nov 15, 2011
3,361
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Lincoln, Ne
It's hard to beat Evan's customer service and kits. The man has helped me a lot. The trans in my race truck is clicking off 9 second passes without skipping a beat using his parts and knowledge. Find another kit that will do that. Don't get me wrong. Dave with Goerand is damn good and has a solid reputation. But once you use evan you'll know why people suggest him.
 

Bdsankey

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Feb 1, 2018
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Dude... people stuff parts in transmissions and call themselves builders,
Same thing with motors. Do yourself and the customer a favor and just call up someone like Mike or Evan etc... some things are better left to professionals:thumb:

I completely agree. I get this feeling that people believe I want to start cranking these bad boys out like hot cakes and not take the time to learn what I'm doing.

I may be 24 but I have learned a lot throughout my life thus far on my career path to being a mechanical engineer and diesel enthusiast. My father and I own/run an auto shop. He has been a mechanic for 40+ years and isn't one to cut corners on anything, especially if our business/name is tied to it.


I understand leaving some things to the "professionals" but everybody has to start somewhere. I chose to build my engine myself as opposed to going to a "professional" because most said it wouldn't work for what I wanted. Well, the longer rod theory paid off resulting in gobs more torque per hp than most standard builds.

Just because someone isn't a "professional" doesn't mean someone else can't get to that level or can't build a quality product. I live in a diverse area that has NOBODY doing any sort of work on diesels, let alone building a good transmission.


There will be bumps along the road, that I am sure of. Minimizing the bumps/setbacks is key as well as practicing on your own stuff before pushing something to a market.

Yes we did and to save people a lot of time when you start as a dealer with me you get all the part numbers for those tools and I walk you through your first builds and I’m always there for a text or call after so I know you’re building something I’d allow my name on.

Sounds good, I sent you a PM.

I'm not a big name builder, but I've done a few. I can tell you that you NEED to sit down with somebody who knows how to BUILD one as there is more to it than just putting a kit in or throwing parts into one. It's also about knowing what not to put in, what to upgrade, where to customize, what needs special attention, where to source what to get your desired goal, and it's different depending on which clutches you use or how you interchanged parts. And be carefull because there is some builders to stay away from as well.

Most anybody can drop a kit in one, but it's the extra's that have been learned through building them that have allowed us to hold the power they can now hold for any length of time.

I completely agree. I've personally got a built trans from someone else in my area right now in my "toy" but I don't like paying people to do things that I am more than capable of doing.

It's hard to beat Evan's customer service and kits. The man has helped me a lot. The trans in my race truck is clicking off 9 second passes without skipping a beat using his parts and knowledge. Find another kit that will do that. Don't get me wrong. Dave with Goerend is damn good and has a solid reputation. But once you use evan you'll know why people suggest him.


I 100% agree. Evan has been a MAJOR revolutionizing factor in the Allison world. I got hooked up with Goerend due to their converters and parts for the dodge guys. Dave does offer very very very very well put together kits for the Allison as well and does give you your choice of clutches (BW, GPZ, or Alto Reds).

I personally have a friend who put together his trans behind his S480 single motor with one of Evan's kits. I was extremely impressed with the level of detail that was provided.

I am working on getting on board with Red Diamond Diesel for all my ford needs.
 

PureHybrid

Isuzu Shakes IT
Feb 15, 2012
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Central OH
Well to answer your question, a basic tear down will need to have a way to mount the trans to an engine stand (make an adapter for the PTO cover), and make / buy a tool to compress the return springs for the c3 / c4. There are also tools for the return springs on the 5spd drums. If you want EVERY tool that is made for an Allison ( including bushing drivers / seal drivers) you better start saving! They're generally over priced. I made my own for the c3 / c4 and then bought the actual adapters for the clutch hub return springs.

Good luck. Don't let anyone tell you that you can't do it, but it sure does take practice! The actual chore of rebuilding one is easy, but as Ferm said, all the little tricks have to be right when you want them to hold power!
 

Bdsankey

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Feb 1, 2018
4,152
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Larsen, Wisconsin
Well to answer your question, a basic tear down will need to have a way to mount the trans to an engine stand (make an adapter for the PTO cover), and make / buy a tool to compress the return springs for the c3 / c4. There are also tools for the return springs on the 5spd drums. If you want EVERY tool that is made for an Allison ( including bushing drivers / seal drivers) you better start saving! They're generally over priced. I made my own for the c3 / c4 and then bought the actual adapters for the clutch hub return springs.

Good luck. Don't let anyone tell you that you can't do it, but it sure does take practice! The actual chore of rebuilding one is easy, but as Ferm said, all the little tricks have to be right when you want them to hold power!

Thank you for the input! Bushing driver's don't worry me along with seal drivers. Worst case I will buy the Merchant trans seal drivers to go with my matching front/rear main set.

Evan's kits seem to have all of the information needed to get it right the first time as well as providing a basis for repeat ability.