12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

reg cab to ext cab conversion?

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Old Mar 10, 2010 | 06:32 PM
  #1  
monster12valve's Avatar
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From: willowick, ohio
Default reg cab to ext cab conversion?

is a long bed reg cab the same length as a short bed ext cab? kinda wanna ext cab... but i dont want to sell my truck. any done this?
 
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Old Mar 10, 2010 | 08:25 PM
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From: Tulia, TX
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haven't done this but im almost sure the wheelbase is the same. u will have to weld different cab and bed mounts to the frame but it should work
 
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Old Mar 10, 2010 | 08:37 PM
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can be done but you will probably be better off just buying one, theres plenty of nice extended cabs out there
 
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Old Mar 10, 2010 | 08:45 PM
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1999 Sport Cummins's Avatar
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From: Iredell Texas
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true it would prolly be easier to sell n buy a new one.. but if your like me its hard to do when you modified it just the way you like... and im nearly positive the whell base is the same, qoute me if im wrong, but when i was ordering my 5in turbo back there was no option for a short bed, i think it was just x-cab or single cab but not sure, But I am 100% positive there was no option for short bed
 
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Old Mar 11, 2010 | 08:44 AM
  #5  
Hammer's Avatar
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The Regular Cab/Long Bed frame is what is used when you buy a Ext Cab/Short Bed.
 
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Old Mar 11, 2010 | 08:05 PM
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so sounds the same to me have fun and post some pics and let us know the details on the change
 
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Old Oct 15, 2010 | 07:48 AM
  #7  
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alright i actually have done the swap and i had a 94 reg. cab longbed and changed it to a 97 ext cab shoty 1500 body ( still have the 1500 badges on it). the wheel base is exactly 4 inches longer for the newer body. yes you do have to change a bunch of bodymounts and you WILL have to put a 3 inch body lift onto it because the cab WILL NOT clear the sending unit on the tank... i have done the swap and love it.. only took me a weekend and 2 days cuz i work full time... stotally worth the swap shitty thing was the wiring but if i could figure it out then you can..the hardest part is welding your mounts on correctly so that your body and cab line up straight as you are looking down the side. any other questions get at me.....
ps. i moved my axel back exactly 4 inches and used grade 8 hardware and re attached it and tackwelded the nuts on. i had a driveshaft made for $90 with a new tube and balanced... good luck

the wheelbase is only 4 inches diff.. but the frame is only 1/10th of an inch longer or shorter but that doesent matter. with the body lift you can still clear 33s before moving theaxel but you dont wanna haul a whole lot.
 

Last edited by customcummins; Oct 15, 2010 at 02:03 PM. Reason: more info.
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Old Feb 25, 2018 | 11:24 AM
  #8  
Tyler Rowland's Avatar
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Default Whats the difference

Originally Posted by customcummins
alright i actually have done the swap and i had a 94 reg. cab longbed and changed it to a 97 ext cab shoty 1500 body ( still have the 1500 badges on it). the wheel base is exactly 4 inches longer for the newer body. yes you do have to change a bunch of bodymounts and you WILL have to put a 3 inch body lift onto it because the cab WILL NOT clear the sending unit on the tank... i have done the swap and love it.. only took me a weekend and 2 days cuz i work full time... stotally worth the swap shitty thing was the wiring but if i could figure it out then you can..the hardest part is welding your mounts on correctly so that your body and cab line up straight as you are looking down the side. any other questions get at me.....
ps. i moved my axel back exactly 4 inches and used grade 8 hardware and re attached it and tackwelded the nuts on. i had a driveshaft made for $90 with a new tube and balanced... good luck

the wheelbase is only 4 inches diff.. but the frame is only 1/10th of an inch longer or shorter but that doesent matter. with the body lift you can still clear 33s before moving theaxel but you dont wanna haul a whole lot.
Should i buy 1500 body lift mounts for 2500/3500
 
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