1999 GMC 2500 4x4 12V cummins swap - Diesel Bombers
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Hello, I'm considering swapping my 6L vortec out for a 12V cummins i have in my 92 dodge. I have done a small amount of research and found i can almost buy everything to make it a bolt in process(motor mounts, adaptor plate, flywheel, transmission ... JOIN NOW TO REMOVE TRACER

1999 GMC 2500 4x4 12V cummins swap

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Old 09-14-2011, 06:58 AM
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Default 1999 GMC 2500 4x4 12V cummins swap

Hello, I'm considering swapping my 6L vortec out for a 12V cummins i have in my 92 dodge. I have done a small amount of research and found i can almost buy everything to make it a bolt in process(motor mounts, adaptor plate, flywheel, transmission controller, ect...). I haven't actually located any threads that had someone doing a swap on my style truck, so i'm wondering on what fab issues i may run into. It seems a lot of people change the transmission along with the motor, but i plan to keep mine the same(4L80). I'm wondering if i buy a duramax front bumper and intercooler if it should work? Will i have to modify some of the cross-members? Any information would be greatly appreciated! thanks!
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Old 09-14-2011, 11:10 AM
geddy's uncle's Avatar
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Never letting Port LaVaca Dodge see my truck again. Long story.

   

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Don't know about the various frame/mount mods, but, there's a company that makes just about every possible bell-housing imaginable for bolting up a tranny to the back of a Cummins. You might also source one from the worldfamous "bread truck" that's often powered by a 4BT and has a TH400 trans.

somebody's probably already done it, though...maybe he'll happen along and give more (better) information.

geddy's uncle's Sig:My truck: "Tiny" '98 QC LB 2500 12-valve, G56, hybridized t-case (long story).
Son's truck: "Da Beast" '90 RamCharger, 12-valve from a '92, NV4500/NP205, matched D-60s, RhinoCoat inside and out.
Daughter's baby beast: '06 Liberty CRD, nearly bone-stock except for an oil-mist trap between the "hockey puck" and the turbine inlet's airhorn
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Old 09-22-2011, 04:13 PM
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you might go an look into autoworld with there motor mounts. and is it 4x4 or 2x4?
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Old 10-15-2011, 05:01 PM
tltruckparts's Avatar
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Trucks gettin body/Paint!!!

   

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is the 99 the 88-98 square body style still or the 2000 up body style

tltruckparts's Sig:1995 Chevy K2500, 1993 Cummins P Pumped 12 valve Turbo Diesel IC, Getrag 5 speed w/ southbend clutch, NP205 Transfercase, SAS w/ GM Dana 60 front. custom fabbed coil suspension, AAM 11.5 rear, BFG MT 35's. SDX 5x14 injectors, PhatShaft 62, airdog II 165, Autometer EGT, Boost, & Fuel Pressure, hydraulic steering. and a few moore goodies
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