Have you done a 4.0 Engine Swap? - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Have you done a 4.0 Engine Swap?

RIGID LED Light Blowout Sale - All Sizes, All Series, all End of Summer Sale, 20% OFF!The Original 3/8" Ruffstuff Diff Cover!

Unread 05-21-2001, 11:21 AM   #1
Registered User
Join Date: May 2001
Location: KY
Posts: 3
Have you done a 4.0 Engine Swap?

My 88 Wrangler has a worn out 258 six w/5 speed. Rather than rebuild and continue with carb and emission system woes I am thinking about a later model engine. Will the 4.0 six bolt in, and what problems will I have? What year engine should I look for? What components outside the engine (computer etc) do I need to make sure are included with the engine purchase? I have the weak transmission and have some transfer case woes, so what about bolting in the entire package... engine, transmission, and transfer case? Will the driveshafts connect without modification?

'88 Wrangler
KyJeeper is offline   Reply With Quote
Unread 05-24-2001, 01:48 PM   #2
Registered User
1987 YJ Wrangler 
Join Date: Mar 2001
Location: Eastern Shore of Md
Posts: 1,381
Yes we have. You have mail . . .
'87 YJ- - D44's, 8" SOA , 5.38's, Locked f/r, 36" IROK's and a bottle opener...
clicky-->Maryland Wheeling spots
clicky-->Maryland OHV Trails Info
HUBDEEP is offline   Reply With Quote
Unread 07-04-2001, 08:44 AM   #3
Registered User
Join Date: Mar 2001
Location: Detroit, MI USA
Posts: 3
So this can be done, correct? What else would be needed to convert 258 w/auto to a newer 4.0 FI with auto?
2000 XJ 0 miles, Husky liners.
linuxrick is offline   Reply With Quote
Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.