Cummins 4bt Engine Swap - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > General Jeep Discussion

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 12-14-2012, 11:38 AM   #1
Jmhu228's Avatar
Join Date: Jul 2012
Posts: 55
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.

Jmhu228 is offline   Quote
Old 12-14-2012, 01:13 PM   #2
derf's Avatar
Join Date: Oct 2012
Location: Aurora, CO
Posts: 2,156
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 - 401/700R4/NP208/D44HD/D60FF - Truck Norris

My gear ratio calculator
derf is offline   Quote
Old 12-14-2012, 01:50 PM   #3
lynn's Avatar
Join Date: Jul 2011
Location: York, PA
Posts: 1,179
HubJeep put one in his YJ7... good write up, excellent fab work:

4BT in Jeep YJ-7 NV4500, Atlas II..
'05 LJ
lynn is offline   Quote
Old 01-04-2013, 07:20 AM   #4
youngjeeper11's Avatar
Join Date: Dec 2011
Posts: 73
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.

youngjeeper11 is offline   Quote
Old 02-14-2013, 09:11 AM   #5
Join Date: Apr 2010
Posts: 4
Jeep should start offering this. All the kits are so over priced
H1Recovery is offline   Quote

4bt , cummins , diesel , engine , swap

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 05:01 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC