Jeep Repair: engine swap, jeep cj5, transmission adapters

Question
have a 1983 jeep CJ5 and i just found out that i have to rebuild my engine....its an inline 6 258 4.2 liter with only 91000 miles on it. i was kinda wanting  to put a 305 in it or maybe a 350....but most likely the 305...my question is would i have to get a different transmission, it is a manual four speed.

Answer
Hey Kolby,

There are transmission adapters depending upon what transmission you have. A good resource for these is Quadratec or 4wheeldrive. Both have pretty good tech assistance and good catalogs. Spendy but good.
Not to tell you what to do....................are you sure you want to swap out your 258 for a 305? I'd definitely rebuild and keep the 258 if it were me. Way better torque for crawling and all around on or off road. If you're going to go V-8 go with the 350 for sure. You'll be happier in the long run.  


Kenji