4.2 crank in a 4.0 block??? - JeepForum.com
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Unread 01-29-2012, 04:47 PM   #1
whiteys_red_XJ
Registered User
1996 XJ Cherokee 
 
Join Date: Oct 2009
Location: Fall River MA.
Posts: 214
4.2 crank in a 4.0 block???

hi tring to get some info on a swap my buddy put into my head i have a 4.0 complete motor and was thinking bout putting the the crank and connecting rods from a 4.2/258 in the 4.0 block has anyone seen this done and is it worth it in the long run as far as gains along with this swap i was goin the port n polish the heads and intake any info ill be helpful

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96 xj 3.5 rustys lift, 33x10.50x15 BFG MT, t case skid plate, front tow hooks, open front and rear diff, NP-242 T-Case 1 in drop, AW4 transmission, dana 30HP, chyrsler 8.25 stock gears, K&N drop in air filter, flowmaster 40 series, poweraid throtle body spacer
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Unread 01-29-2012, 05:28 PM   #2
foggybottombob
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1984 CJ7 
 
Join Date: May 2008
Location: Monument Colorado
Posts: 5,833
It's been thought of before. I have a 4.6 liter stroker in my XJ.

http://www.jeepstrokers.com/forum/
http://jeep4.0performance.4mg.com/stroker.html
http://www.angelfire.com/my/fan/stroker.html
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