[shawn macananny]

It doesnt matter where i got it, if it doesnt work then I'll tell you all and you can laugh at me. I am also considering swapping in a Cummins though as i have read of several successful swaps with the allison. I'm must more partial to that engine if i stay with a deisel. I wont know how to work on it but i know it will last.

 

[DURAtotheMAX]

ooooo secret stuff. Way Cool. I understand..............................................

 

[shawn macananny]

Not secret its a setup that supposed to run with EFI live from what i understand. I'm still reasearching it so theres not a whole lot of info to give you.

I really have no idea why you guys are so against me installing a 6.0L.

 

[Wolford]

its not the 6.0. i just dont think the alli is a good trans behind that motor. But, if you do it good luck and report back to us!

CYA

 

[Jasondt2001]

I can honestly say not one of these guys hates any series of the LS# motors... they're amazing, they really are.
What you're asking is just I don't know - weird?
You wanted heavy duty - and you got it. I'm sorry for your problems w/ the motor in your truck but honestly everytime I have to pull something I'm floored at how I'm sweating it 10 times more than the truck ever is...
You are right about going fast takes some money, and preparation with a diesel.
LS# parts are MUCH more readily available and mass produced so the production costs are alot lower.
I think all they are saying in their minds is with the reliability, power potential, and effeciency of the diesel in a pickup like yours you're taking a step backwards going to a lesser motor.
Sure it can put up some serious numbers, I've seen it... I love the transam my mom's got! But it's pushing around a much smaller lighter vehicle. The curb weight of your truck is probably 2 of those transam's at ALL times.
We get behind these trucks (or at least I do) and with all the power totally forget they weigh in at over 7200 lbs empty. They sure don't drive like it when you ask... That's where I think you'll lose ALOT of your effeciency. Take a look at the Chevy Trailblazer SS's and see what pigs those things are. They're THIRSTY
Whatever you do, I wish you the best of luck.

 

[shawn macananny]

Is an allison worth anything to sell? Will a 4wd 4l60e bolt to the allison transfer case?

 

[shawn macananny]

Yeah i understand The extra weight. For what i use my truck for its towing once every couple months. I drive the truck maybe once every 2 weeks just to keep the batteries charged. I've had too many problems in the 50,000 miles ive owned it to really want to keep the engine. Id sell the truck if i thought i could get the 9k i owe on it but i know i cant. If the motor last another year and a half until its paid off then i will gladly sell it.

The LM7 5.3L in your truck is also an LS1 based motor. They are great motors. I have an aluminum 2007 5.3L in my dining room right now. Just about every part from 4.8L up to the 6.2L are interchangeable along 6 engine series and even some from the 7.0L are interchangeable so performance from them is extrememly easy. I may end up going with the 4l80e if i think i can sell the Allisson and figure out what to do about the transfercase.

 

[got-h2o]

Shawn, do yourself a favor and look how many posts Ben has (Duratothemax). He knows his sh!t. Take the time to view some of his posts. He is one of the most inteligent GM guys on this forum for God's sake. If what you are saying was possible, he'd have prolly been the one to figure it out.

No one here so far is against the 6.0's that I've seen. They're good motors, able to produce large HP #'s. My buddie has a Z06 Vette with one built and it's insane! It's just the point of what you want to do and why. If you can't afford to fix your truck, then you probably can't afford to do this swap in the long run, if it was even possible. Cool down and realize that there's a reason for everyone telling you not to get involved in such a mess. If you do a swap, consider building a 4L80. They can stand behind way more HP than what I feel your giving them credit for (although you never mentioned them here).

**edit, you beat me to the 4l80......

 

[DURAtotheMAX]

Shawn I only know what I have read and taught myself, dont take my word as the gospel. All im doing is giving you my opinion and why I (myself) would never do it and think it wouldnt work the way you think its going to. Its your truck, that is just what I think of the idea...

run a 4L80. 4L60 would cry in the application you are putting it in.

ben

 

[got-h2o]

Also, if you work on this stuff all the time, you are prolly skilled enough to do your own HG's and save a lot of $ doing so. Your truck would then be worth at least what you owe on it.
It sucks that you have an 01 that headgaskets went on, but you can't claim the Dmax to be unrelaible b/c of it. Had you properly flushed the coolant since new, it prolly would have never happened. There's a select amount of 01's that are starting to experience this. The issue was resolved by 02 anyways. Yes, there's issues with them as there are in every vehicles, but nothing IMHO that makes them unreliable. I don't think it's us not giving the 6.0 credit, it's you not giving the Dmax credit. You're frustrated with your truck having issues, but don't jump on us for giving honest opinions when after all, it's what you asked for .

 

[DURAtotheMAX]

If you really want to try it. It might work. Get an 8.1 TCM. It has the capability to work without the dmax high speed J1939CAN bus. The 8.1 allison TCM has the ability to understand and send torque reduction and delivered torque requests over the two PWM circuits/wires that exist on every LSx gas ECM. If you get a 6.0 calibration that supports torque reduction via the two PWM cirucits (get a calibration from a 2007-2008 chevy 6.0 express van, they have Stabilitrak, and therefore support desired/delivered torque requests from an external source/module), wire up the 8.1 allison TCM to those two circuits, it will most likely work. THe TCM will just think its talking to an 8.1 ECM.

 

[shawn macananny]

yeah the 4l60 is not worth it. I have a built 4l60 sitting here that was built for a 383 but i still wouldnt put it behind a truck this heavy.

The swap will be much cheaper in the long run. If the $2200 would fix me problem 100% i would do the head gasket swap and be perfectly happy. I just dont trust the engine nor my first time deisel head gasket / injector cup replacement skills. There's alot that could go wrong and i would be out head bolts, gaskets, and pretty much everything i just spent money on. If i buy a take out engine thats about $5k at minimun and there's no guaranteeing how long that motor will last either.

 

[got-h2o]

Yeah i understand The extra weight. For what i use my truck for its towing once every couple months. I drive the truck maybe once every 2 weeks just to keep the batteries charged.

From Sig:

2001 Duramax/Allison 2500 HD crew cab, 4x4, Knapheide Utility body, some massive helper springs, straight pipe exhaust, modded intake box hauls 9klb+ daily, HPP3.



On edit, hauling and towing.............is your bed full with 9k? If so, good luck getting more than 3mpg's out of the 6.0 if this all works out for ya.

Which is it?

 

[shawn macananny]

Thats a great idea about the 8.1 TCM i hadnt though of that. I really dont honestly know too much about them (the allisons) yet as my high speed internet is down and has been been all week and im using dial up to research this so that makes it all the more frustrating to me.

I'm sure i could do the head gasket swap but from what i've read head gaskets are about $600, head bolts are about $250, various other gaskets are around $300, a new water pump was like $300 and i forget what else. I had a post a while back here that a member came up with the number $2,200 If i were to do it myself. I would also have to send the heads off to be milled (i know they cant be more than like .005" or something) and i may end up having to buy new cylinder heads.

 

[shawn macananny]

Was a typo, meant it tows haha. I dont tow any machinery with it anymore though. Record haul to date was a 22,000lb dump trailer full of wet clay haha. I really like the Duramax its jsut frustrated me beyond reason so far. Maybe i'll atleast teardown the duramax and have a look at it. Are there any write ups on the head gasket and injector cup seal swaps? I've heard i need special Kent more Tools and such which are going to cost me even more money.

 

[DURAtotheMAX]

Im not going to get into explaining the details, because trying to explain how to do something complicated like this without being right there will make me go insane. I have 30 new PM's in my mailbox about people with nav unit questions (when the answer they are looking for is clearly stated in the instructions)

but if someone put a gun to my head and said "make it work" thats how I would go about it. If you have experience tuning/making harnesses/knowledge of the LSx style PCM's, you should be able to figure it out using the base idea I stated above.

ben

 

[DURAtotheMAX]

I've heard i need special Kent more Tools and such which are going to cost me even more money.

meh GM and a lot of people say you do. Ive never had to use the injector pulling tool. Just yank on it, or use a big screwdriver.

 

[Wolford]

Is an allison worth anything to sell? Will a 4wd 4l60e bolt to the allison transfer case?

I will buy your trans if you decide to sell

 

[shawn macananny]

Im not going to get into explaining the details, because trying to explain how to do something complicated like this without being right there will make me go insane. I have 30 new PM's in my mailbox about people with nav unit questions (when the answer they are looking for is clearly stated in the instructions)

but if someone put a gun to my head and said "make it work" thats how I would go about it. If you have experience tuning/making harnesses/knowledge of the LSx style PCM's, you should be able to figure it out using the base idea I stated above.

ben

I understand I'll be reaserching alot more into it tonight. I dont really know alot but i can learn very easily and remember how to do things for ever once ive done them. Things like reflashing a new hitach drive to work in an Xbox 360 (which would seem easy) or getting a rear wheel drive trans behind the front wheel drive LS4 (say it cant be done), or just things at work. I'm positive if i spent a night reasearching, reading and planning i could figure how it works and how i could make it work.

Dont feel bad im getting bashed on 2 other forums as well by the LS1 guys haha

http://www.performancetrucks.net/forums/showthread.php?p=4102622#post4102622

http://www.ls1tech.com/forums/conve...0-who-has-swapped-6-0l-4l0e-into-01-duramax-allison-silverado.html#post10852510

 

[allisondan]

I know one thing you hook an Allison up to a Cummins and turn it up. Hang on, has been tested at the factory years ago but was cut by Dodge.