Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > ls1 YJ transplant

Join Wrangler Forum Today

Thread: ls1 YJ transplant Reply to Thread
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the Jeep Wrangler Forum 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 email 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.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
09-15-2011 10:01 AM
Hemi YJ I put one in my 1990 4.2L YJ and one in my wires 2002 Dakota Quadcab. I don't regret it one bit.
09-15-2011 09:31 AM
borrowedeye i think you just made up my mind! always been a fan of the hemi's, about got me disowned, since my family is die hard ford but i still like them.
09-15-2011 12:37 AM
Hemi YJ I use a 5-45RFE. Strong as Hell and has a double overdrive. If I had $25,000.00 sitting around I might throw a "real" Hemi in mine too. But I'll settle for 18-20mpg and 450hp. No complaints here.
09-14-2011 02:58 PM
borrowedeye "all out" implies i have money lol
09-14-2011 02:27 PM
Ibuildembig I say go all out and put a real HEMI in it
09-14-2011 02:20 PM
borrowedeye what tranny did you use? Auto or manual? I am leaning more toward hemi now that I think about it and there are people doing it.
09-14-2011 09:32 AM
Hemi YJ I did it and the aftermarket is big enough. But like any major build there is a lot that you're going to have to do yourself.
09-14-2011 08:53 AM
borrowedeye thanks for all thehelp, keep it coming.
As for putting a hemi in, that hit me on my drive home last night. itd keep it all mopar and id like that. who has done that and is the after market as big for the hemi?
09-13-2011 06:23 PM
Hemi YJ Put a Hemi in it.
09-13-2011 02:46 PM
amoujaffar ahh this looks familiar. i really wanted an LS1 too, but it really isnt that neccessary.

Many guys bore and stroke the 4.0 and keep everything the same, some guys change out axles, and mix and match all over. you may wanna check out my thread, a lot of guys weighed in on my decision, and i finally came up with my plan. also you may look deeply into novak-adapt's website, as they have just about everything you need to know for any GM (and most other) swaps.

believe it or not my economical MPG came out best with a 5.3, 4 spd, and 373 gears, but to each his own, check mine out here.

my final setup is on the last page, but theres a lot of good info in there
09-13-2011 02:35 PM
Ibuildembig My guestimate would be about 5-8K by the time your done if you have nothing to start with.
09-13-2011 02:33 PM
ls1 YJ transplant

I just graduated from college and need to replace the jeep i sold to put me through college. I figured I would by a newer tacoma but then got to thinking, why spend 20,000 grand on a "family" truck? I dont have a family, so why not build a jeep? So I am thinking of doing another YJ '94 or '95. I want to go LS1 for power, after market availability, MPG's etc.
so I had a few questions for my fellow jeepers.
1st. what does a swap cost?
2nd. best year LS1 to get?
3rd. What standard tranny should I use?
4th. What kind of MPG's should i expect with 33's
5th. I can do this all in my garage correct?
6th. If there is a better V8 swap let me know.
All help will be greatly appreciated and i can't waite to get this under constuction.
thanks for you help.

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

All times are GMT -5. The time now is 12:01 AM.

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