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Old 12-14-2012, 10:38 AM   #1
Jmhu228's Avatar
Join Date: Jul 2012
Posts: 47
Cool Cummins 4bt Engine Swap

Anybody done anything like this? I have interned at Cummins the past two summers and drive a TJ and think this would probably be the coolest thing ever. Obviously I would prefer to do the swap myself. Anyone done the swap personally or done something similar? I'd love to hear your input.

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Old 12-14-2012, 12:13 PM   #2
derf's Avatar
Join Date: Oct 2012
Location: Cedar Rapids, IA
Posts: 1,285
I've been thinking about doing a 4BT swap in my J10. The 6BT is just a little too long to do it without major surgery. I figure I could build up a 4BT with a good intercooled turbo to make enough torque to move the truck around with my CJ on a trailer behind it. Sure it wouldn't win in a race with a modern diesel truck but I bet it could hold its own heading out I-70 to Moab.

2012 JK - 3.6/NSG370/NP241/D30/D44 - Grimm Jeeper
1986 J10 - 360/700R4/NP208/D44HD/D60FF - Truck Norris

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Old 12-14-2012, 12:50 PM   #3
lynn's Avatar
Join Date: Jul 2011
Location: York, PA
Posts: 1,156
HubJeep put one in his YJ7... good write up, excellent fab work:

4BT in Jeep YJ-7 NV4500, Atlas II..
'05 LJ
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Old 01-04-2013, 06:20 AM   #4
youngjeeper11's Avatar
Join Date: Dec 2011
Posts: 72
I did it to my YJ! Best engine swap I have ever done. I can even help you out with the engine mounts if you decide to do it!

Here is my ongoing build
Jeep 1: 93 YJ, TBI Chevy 350, SM 465, NP 231 SS SYE, 3.5" BDS, 33" BFG AT, 0 rust. Sold due to College.... Jeep2: 91 YJ, 4BT Cummins TD, NV4500, NP 231 SS SYE, 2.5" OME, many mods in progress. DD: 2001 Cummins 24v ext. Cab short bed, NV4500 5spd.

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Old 02-14-2013, 08:11 AM   #5
Join Date: Apr 2010
Posts: 4
Jeep should start offering this. All the kits are so over priced
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4bt , cummins , diesel , engine , swap

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