Bigger Engine for my '88 MJ

[88WISHLIST]

I want to put a bigger engine in my '88 MJ.

Right now I have a 4.0 inline 6. 4x4. Automatic transmission. What would you guyssuggest?

[Pete M]

what size tires do you have?  what gear ratios?

[johnj92131]

I would want to know more about your truck and how you use it.  What is it about your current setup that makes you think a bigger engine would be better?  Honest questions that need to be answered.

 

At some point you have to tell us how much money you have ready to spend right now for the "bigger engine".  That will ultimately determine what you are able to do.

 

For $10K, there is a place in Washington that will do a turnkey rebuilt Mercedes 3.0 diesel conversion in a Cherokee or Comanche.  That engine will run 500K miles with no problems for years.

[omega_rugal]

Stroke thaT 4.0

[Marine1Texas]

Stroke it out to 4.5 or 4.6 is straight forward. any other engine will require motor mounts and got change a tranny or adapters to tranny.

If you have the Dana 35 it would be advice to upgrade to more beef, since to much torque will make life span go fast.

There are a crap load of engines you can drop in it however wiring and fab work may make you go more then you like.

 

Easy to change the rear ends dana 35 and new ring and pinion on front dana 30 from 3.55 to 4.11. your notice a seat of the pants, also needed if you want much larger tires. Rebuild the 4.0 in to a stroker 4.5 or 4.6 with all the bells and whistles. HO intake With the large throttle body, the larger injectors and if you want a turbo would add a big jump as well. The Renix 4.0 takes well to upgrades.