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: 8.1L-->Cummins swap: crazy talk? Chevy454 08-26-2009, 05:11 PM Just thinking out loud...got the '01 2500HD in my signature, ccsb, 8.1L/Ally...the simplicity of the 8.1L is a breath of fresh air compared to the drama of my LB7, but honestly, the mileage SUCKS. How ludicrous is the idea of a Cummins/Ally combo in my 2500HD? And just how salty would this be parts-wise? Any shot of the dash/guages/etc working when it's all said and done? Tanc Crusher 08-26-2009, 05:58 PM You have to change to a stand-alone controller for the Allison. http://www.beansdieselperformance.com/store/cummins-conversions/electronics/allison-stand-alone-transmission-controller/prod_274.html Gauges I have no idea there. But probably work out if worst case crack it open and section each off. But do believe the cluster is pretty seperated at the plug. Oh it can be done and sure it has. Might try google searching. for 8.1 to cummins swap or something like that. Brian GetSome8.1HD 08-26-2009, 06:07 PM You can olny drive one truck at a time so I say make that 8.1 breathe some fire and use it as a toy :D Chevy454 08-27-2009, 12:59 PM An 8.1L-->Dmax swap seems straightforward enough, except everyone recommends staying within the same generation, which means LB7...but I'm kinda down on the whole *LB7 experience* after the 2nd round of injectors in my dually...if an LLY or newer swap was possible would be great, but everyone says it's next to impossible on the '01-'02 trucks. Just my luck...! GetSome8.1HD 08-27-2009, 02:30 PM Do an LB7 with LLY heads woodchuck2 08-27-2009, 09:23 PM :bow: if you stuff a Cummins in that truck. Great torque and much better fuel milage. The Cummins is known to have the best fuel milage of the diesels. SlammedLLY 08-27-2009, 09:36 PM have just spent looking on DP for about 30 minutes and someone beat me to it...i have a 6.0L gmc...would a cummins even fit in the bay...how much modification or fab would have to be done along with a sick tune googled it and not much showed up Chevy454 08-28-2009, 06:47 AM have just spent looking on DP for about 30 minutes and someone beat me to it...i have a 6.0L gmc...would a cummins even fit in the bay...how much modification or fab would have to be done along with a sick tune googled it and not much showed up I ran across a thread a couple nights ago where a guy put a Cummins (I think it was even a 24v? can't remember...) in a 2000 or 2001 light duty 2500...so, it'll fit. Try google to find it, and I'll see if I can dig it up... Chevy454 08-28-2009, 10:33 AM Here you go...24v into a 2000 2x4 2500 rclb... http://www.4btswaps.com/forum/showthread.php?t=6591 got-h2o 08-28-2009, 11:15 AM I've been wanting to do this too. Anything is possible. It was actually done quite a while ago. There was an 01 HD for sale in a local trader here about 5 years ago. It was an SFA lifted white reg cab. I'm an idiot............5 years ago they only wanted $12k for it!!!!!!! Chevy454 08-28-2009, 11:24 AM I've been wanting to do this too. Anything is possible. It was actually done quite a while ago. There was an 01 HD for sale in a local trader here about 5 years ago. It was an SFA lifted white reg cab. I'm an idiot............5 years ago they only wanted $12k for it!!!!!!! There's a burgandy '03-'04 for sale I ran across somewhere...sat the GM body (and rear) on the Dodge chassis...think he was trying to get $9k for it. SlammedLLY 08-28-2009, 10:06 PM haha anyone have a 5.9 they wanna get rid of...that would sound so badass powerstar23 08-29-2009, 02:29 AM yup I know Ima put a 12v Cummins in my 01 one of these days. It would be so sick screamin seeman 10-14-2009, 02:41 AM Here you go...24v into a 2000 2x4 2500 rclb... http://www.4btswaps.com/forum/showthread.php?t=6591 I know the guy that built that truck...lol. I'm working on another truck now. This time it's a 05 HD2500 4x4. Let me know if you guys have any questions. | ||