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  • Engine Opinions???

    Well Gents Gettin Ready To Rebuild My 85 From The Ground Up And I Need A Engine Im Buildin It For Crawlin Any Ideas Or Recomendations I Though About Droppin In A 350 But Not Sure What Do You All Think?

  • #2
    You'll get a lot of opinions. But for the price you can't beat a 350 especially with the reliability and parts out the wazoo. Also, you can use the readily available 2.8 to 350 motor mounts.

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    • #3
      Crawlin is all about gears, not horsepower, im a mud guy but all the guys around the trails i run into all run a 4.0 motor,stock auto tranny(with a cooler), and a twinstick D300. i fully agree with them that its a bulletproof setup. take to mind they also are runnin Dana 60's, locked with a full 4-link setup. but if i were you, smaller motor, stout drivetrain. big motor and low gears break things, and its usually a big break

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      • #4
        I agree with brooks. I would rather stall the motor than bust a shaft or something.

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        • #5
          I think you have two options. In this day and age, MPG means alot. As fun as a V8 would be in an XJ, I think I'd go a different route. I'd either go with the stock 4.0L, or if you wanna go GM, go with the 4.3L Vortec. That'll give you some nice power with some decent gas mileage.

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          • #6
            cool

            well by the way everyone sounds on this matter i think i will try to scrounge up a 4.0 i think with and auto trans and a d300t case and maybe dana 60s yea i think i will start there thanks for the input now that you all mention it i got the 258 in the cj and i love it so yea 4.0 it is. thanks all

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            • #7
              personally I would go for the vortec v-6... not as big as the v-8, still produces pleanty of power, and parts are easy to get... not to mention the nice fuel injection.

              I know a few guys that have done this with their XJ's and have loved it... they are running the auto with the d300 and 4:1 gears in it...

              but honesstly.. in the end it is your rig, and your choice!!

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              • #8
                what size tires do you plan to run?

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                • #9
                  i got a s10 with the vortec, bone stock and cant beat my jeep with 33's in a race. Id personally stick with the 4L. theres lots of available upgrades as well. if your doing low RPM crawling think about getting a different cam to drop the peak power. my stroked 4L is going to have peak power at 2grand, instead of the stock 3. meaning its gona be alot more usable.

                  as well a big downside to V8's is they tear up the unibody, lots of torque to pull things apart.


                  OH and if you want to do the 4L swap, you will need a new hood, hood release equipment and the rad support(these can be from 87-96 cherokees), and rad (from a 91 is probbally the best year). these are essencial to getting the long motor in that engine bay.

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                  • #10
                    tires

                    well I thought about 35 or 37 I know a little chop chop but im gonna make it into a crawler so who knows

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                    • #11
                      you could always spend the 5-6G like me and build a custom stroked and bored 4.7L. a very powerful inline six

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                      • #12
                        personally, id stick with the 4.0. straight six motors make alot of torque, and im a fan of keeping jeep motors in jeeps, just my $.02 though

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                        • #13
                          jeep power all the way!

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                          • #14
                            Originally posted by brooks93xj View Post
                            and im a fan of keeping jeep motors in jeeps, just my $.02 though
                            Unless your CJ came with a GM motor, then you just stick with GM.

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