Easiest swap to six over 2.5 "four angry squirrels"? - JeepForum.com
LinkBack Thread Tools
post #1 of 7 Old 08-17-2011, 02:48 PM Thread Starter
Registered User
1990 YJ Wrangler 
Join Date: Jul 2011
Location: Coshocton
Posts: 61
Easiest swap to six over 2.5 "four angry squirrels"?

OK, I have the four angry squirrels in my 90YJ, TBI, stock 4.10 gears, 31 inch tires. I am getting tired of looking at Peterbuilt radiators in my rear view mirror on the highway.

What would be the easiest swap to a Jeep 6? I like the simplicity of the TBI over a carb and would like to keep it if possible. What about the ICM, clutch and bellhousing?

USMC3531 is offline  
Sponsored Links
post #2 of 7 Old 08-17-2011, 03:44 PM
Registered User
1994 YJ Wrangler 
Join Date: Dec 2009
Location: Monroe
Posts: 386
I'm currently swapping my 94 2.5 over to a 95 4.0. So far, I've got $450 invested in the motor, trans, tc, wiring harness, rear driveshaft.

I just ordered new frame side motor mounts for $95...and I'm not really sure what else I'll be needing at the moment. For simplicity, I went with an ax15 so I wouldn't have to be concerned with wiring the aw4 controller.

I could have likely had it done in 3 solid days if I wasn't waiting on the mounts. Everything else went sooooo smooth until that.

1994 Wrangler...4.0 AW4 swapped, sye'd, 5.5" lift and 33's
Hghgrad is offline  
post #3 of 7 Old 08-17-2011, 04:04 PM
Web Wheeler
1991 YJ Wrangler 
Join Date: Dec 2010
Location: 14304 Niagara Falls
Posts: 2,537
I would look for an XJ Cherokee (the cherokee sport) in a junkyard. Get the whole motor, transmission, and transfer case. Probably also the wiring and ECU. Its almost identical to what they put in the 4.0 Wrangles anyway. But like highgrad says, the only new parts you *really* need is a new pair of engine mounts, because you'll have to cut the 2.5 mounts off the frame.
oldtime_ironman is offline  
post #4 of 7 Old 08-17-2011, 04:05 PM
Registered User
1995 YJ Wrangler 
Join Date: Dec 2005
Location: Livingston
Posts: 1,134
Do a search. Lots of write ups on 4.0 swaps.
dadstoy is offline  
post #5 of 7 Old 08-17-2011, 07:14 PM
Registered User
1990 YJ Wrangler 
Join Date: Jun 2011
Location: billings
Posts: 14
i swapped my 2.5 to a 4.0. it was a 90 originally, and i have all of the wiring harness out of a 94 and my engine, transfer case and transmission are out of the 96 cherokee sport. i cut and rewelded moter mounts and trany mounts, and almost everything else went into place. i also snagged a set of 93 guages and those all bolted up and wired up as well. i still have the 4.10s out of the 90 so i have plenty of power!
ridgeghost is offline  
post #6 of 7 Old 08-17-2011, 09:08 PM
Registered User
1990 YJ Wrangler 
Join Date: Nov 2009
Location: The southern armpit of California
Posts: 2,098
The 4.2L can be fitted with the Howell TBI kit or the junkyard equivalent from a 4.3L V6. The 4.0L ('91 and newer) will have MPFI.

The Howell kit for the 4.2L comes with everything you need, including the ECM programmed for the 4.2L. It will set you back over 1000 clams though.
NonRubicon is offline  
post #7 of 7 Old 08-19-2011, 04:39 AM
Registered User
2004 TJ Wrangler 
Join Date: Jul 2010
Posts: 3,584
Originally Posted by USMC3531 View Post
What would be the easiest swap to a Jeep 6?

Sell the 4cyl Jeep and buy one with a 6cyl allready in it.
SLADE is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Nv 3550 On 4 Angry Squirrels. moonshinefuel YJ Wrangler Technical Forum 337 07-09-2012 11:46 AM
4.56 vs 4.88 gears- 4 angry squirrels- Destr0 YJ Wrangler Technical Forum 16 08-28-2010 09:24 PM
Leaky Angry Squirrels Finsup TJ Wrangler Technical Forum 1 05-11-2010 08:26 PM
Angry Squirrels? or...trak Loc? gregdean13 TJ Wrangler Technical Forum 4 01-12-2010 04:57 PM
How to TAX your four angry squirrels Thee_Nickster YJ Wrangler Technical Forum 16 06-16-2009 07:22 PM

Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome