Help wanted for 24v Swap in Indiana

[Brayden]

Here's some more pics. I tossed that skinny tire on there to look at the width difference front & rear. I'll be about 3" wider on each side after it's all done. The rear is sitting at ride height on 40" tires. I didn't have jackstands tall enough to get the front up that high.







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[Brayden]

Here's some pics. . I cut the rear half of the frame off and I'm replacing it with 3x5 . 250" wall box tubing. . The new framerails will be on here tomorrow







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[onestackdram]

Looks like things are really clicking along, I am excited to see everything start coming together, keep posting away and take all the pics you can



Russell

 

[Brayden]

Now here's the best pic yet. A damn near brand new Allison 1000 series transmission. It's set up for 2wd config but that'll change in a couple days. Enjoy !!! :--)







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[nickleinonen]

cool i look forward to seeing/reading about your progress on this project... looks great so far...

 

[TxDieselKid]

Now that is one bad azz truck with a 24v p-pump, and that transmission.

 

[cjohnson1]

Ok, So you've got a stupid pump on the 24 valve Cummins,and an Allison 1000 smart transmission to go behind it. All this in a custom chassis S 10 Chebby 4 wheel drive.



Now let the cat outta the bag.



How you gonna control the transmission?



Enquiring minds want to know. Are you going to build a stand alone computer for it or modify an engine computer.



OR, is there a way to make the Allison Stupid too?

You know where I'm going with this. Don't ya?



Curtis J





Hey,I'm hopeing to follow your lead someday!

 

[Brayden]

Ok. . Everybody who wants to know about an Allison have a seat



Here goes. .



All Allison's require a standalone computer. . Allison calls it a TCM, or transmission control module. It comes with all Allison transmissions. This computer does everything you need it to do. No need for a standalone computer, per say. . It already has one.



SO, all you have to do, if you were to stumble across one in a junkyard, is to just pull the transmission and the Allison TCM. On GM trucks they are located on the drivers side, on the fan shroud. It has a cast aluminum housing w/ an Allison logo on it, you can't miss it.



The only thing you need to do to retrofit an Allison to a mechanically injected diesel engine is to add a throttle position sensor to the pump. These can be ordered directly from Allison and hook up easily to a p-pump. Now that you have a TPS on the motor, you wire it into the Allison TCM and voila. That's all you need to do. The rest of the data that it needs is gathered from the various sensors on the transmission, i. e engine speed, turbine speed, and output speed.



Now you do have to have the correct calibration, but that can be had at any Allison Distributor.



I know which one, and i'm not telling



Curtis, when I get back from school, you're gonna have to come up and we'll slap a 2000 series in that motorhome of yours

 

[cjohnson1]

NOW that's the answers I'm looking for. Now I have some idea of what to look for on my next junk yard visit. Look out ,I'm dangerous. I actually have a truck yard not too far from here.

Curtis, when I get back from school, you're gonna have to come up and we'll slap a 2000 series in that motorhome of yours

In anticipation of doing just that, I built my engine mounts so that I can pull the AT 542 transmission out of the motorhome with out disturbing the engine. It hangs off the back of the Cummins ,out there in mid air. Just like the big school buses. My biggest worry will be the driveshaft length, and we know that's a no brainer!

Maybe I should consider the 3:56 gears in the Dana . Don't want to step it too tall for the 2000's overdrive.



Too cool. Brayden, We're definitly gonna have to do some wheeling in Moab together sometimes.



Curtis J

 

[Brayden]

Sounds good to me buddy, I'm up for whatever.



I'm actually going to try to incorporate repower/retrans into the business I want to start when I get back.



Should be

 

[curatchko]

More pics!!!!!! This is very cool!!!!!!!!!!!!!!!!



Oo. Oo. Oo.

 

[onestackdram]

do you get a price for starting a thread that has been seen over 5000 times?



Russell

 

[Brayden]

I hope the prize is money. . 'Cause I need it



More pics are on the way. . been too busy to post them. . I'll post about 20 tomorrow. . Including pic's of the Allison disassembled while it gets "reconfigured"

 

[Brayden]

Here's some of the recent progress pics. .



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[Brayden]

My boss is doing all the final welding of the framerails into place. I trust him a lot more than myself when it comes to very critical welds.



It's coming together... Notice the parallel that's clamped to the front two bed mounts. Look at the frame compared to it. . it's about perfect. . Suprisingly perfect actually



Enjoy!



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[Brayden]

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[bgilbert]

Looking good Brayden. I'd like to come and check it out when you get closer to finishing it or when complete. Bill

 

[Brayden]

Thanks!! I'm getting to the good part. . I've got all the parts I need except for an SAE #3 flywheel housing which is on it's way from texas. (Thanks John Edwards/Curtis Johnson)



I "reconfigured" my allison today. I changed bellhousings, the output shaft, rear cover and cooler manifold. I've got all the adaptation parts that I need... I think



It's not cheap, but I'm sure it will be worth it.



I'll have to have a TDR rally @ my house sometime. . Cook some burgers/drink some beers. Check out my/others trucks.



Stay tuned

 

[JakeGMCHD]

Brayden



While you had the Allison open did you beef up the guts? Did you also purchase an aftermarket Torque Converter? Just curious as it would be a good time to do it and it wouldn't hurt.

 

[Brayden]

To my knowledge there currently aren't any internal "beef" parts for the allison 1000 series. I did not change the torque convertor either. I'm going to use the big block gas convertor that came with it, since it has a higher stall . I'm going to try to rough up the reaction plates in the 5 clutch packs, but I that will be down the road. . I'm sure it will hold up to 400hp especially in my light truck. I'm using a medium duty (topkick etc) truck calibration, that shifts firmer than the light duty (silverado HD) which translates to less clutch slippage.