Go Back  DodgeForum.com > Dodge Trucks > Dodge Ram > 3rd Gen Ram Tech
Reload this Page >

Hemi to 12 valve Cummins swap

3rd Gen Ram Tech 2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Hemi to 12 valve Cummins swap

Old 01-15-2010, 11:57 AM
JoeHemi's Avatar
JoeHemi is offline
Record Breaker
Join Date: Nov 2008
Location: Pierce County, Wa
Posts: 2,273
Old 01-16-2010, 02:55 PM
aftbig is offline
Join Date: Jan 2010
Posts: 56

The first gen and second gen cummins up until 98 I believe can be started on a tire with a jug of diesel and a jumper box/battery...their roughly a 5 wire hook up. You can put one in anything with a battery and a fuel tank. Only way to kill a 12v cummins is to cut the fuel off...the fuel cut off is a simple solenoid...some people use a wire if the solenoid goes out...as it's a pricey piece to replace. The pump is mechanical...therefore...as the starter turns the engine...it pumps fuel...which runs the motor. Adjustments to the motor are made by a few screws on the pump...its as basic as it gets...pretty much a tractor motor in a truck. Now when you get into the 24v it gets alot more complicated...pretty much youd need a donor truck with all the wireing. If not...good luck.

Last edited by aftbig; 01-16-2010 at 03:06 PM.
Old 01-16-2010, 03:08 PM
02Steve1990's Avatar
02Steve1990 is offline
Record Breaker
Join Date: Jan 2008
Location: CT
Posts: 2,343

Originally Posted by oefootball_70 View Post
There is someone who dropped a 24 valve into a reg cab short bed 1500. So I'm guessing its possible, just gonna take time and a good chunk o change.
Holy crap I wanna check that out lol

EDIT: Just saw Joe's post...I wonder how fast that sucker is.
Old 06-23-2014, 06:41 PM
450rider18's Avatar
450rider18 is offline
Registered User
Join Date: Jun 2014
Posts: 1

this is pretty old but it can be done one sitting here with it already done pretty simple setup if you ask me 10 times more power than a hemi and great fuel economy at that get the new body style at half the cost with a better motor what more could you ask for? saw some guy saying you cant do it because of the air bag cluster why are you even in there guess what power locks work great on this truck you dont mess with the bcm so why are you talking about that if anyody is still looking into this hit me up ill snap some pics. swapped with a 5 speed as well no more auto used 97 12 valve with nv4500 have to move the tranny forward a little bit but nothing (not doable) like previously stated

Thread Tools
Search this Thread
Quick Reply: Hemi to 12 valve Cummins swap

Featured Sponsors

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: