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Old August 15th, 2011, 12:58 PM   #1
DhG
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Default Newbie looking for advice

Im new to the jeep world , but not to 4x4 . I recently p/u a 1989 Wrangler YJ that needs lots of help. its going to go through a complete tare down and rebuild
It has a 4.2 six in it with Chrysler auto , I intend to do a V8 swap my question is what is a good combination to go with as far as motor,transmission , transfer case, My intention is for a everyday driver , play in the sand and trails I would like some input from the veteran jeep owners on what a good combo would be and yes there is a budget I have to keep too . I know there's lots that go into these projects just need a starting point for the power plant.
thanks for any input
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Old August 15th, 2011, 01:14 PM   #2
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do a search. Start reading. Tons of info.
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Old August 15th, 2011, 01:14 PM   #3
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btw welcome to site!
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Old August 15th, 2011, 01:52 PM   #4
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I just did a 350 TBI Chevy V8 with a 700R4 trans and 231 T-case in my 89 Wrangler. Set up was pretty easy and there is a ton of aftermarket support. Also keep in mind that if you are going with a more powerful drivetrain, you'll probably want to upgrade your axles and so on.
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Old August 15th, 2011, 02:22 PM   #5
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As far as a motor ive rebuilt a few 350's im thinking this is what i will start with , what is a better way to go as far a transmission auto or Manuel ?
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Old August 15th, 2011, 03:49 PM   #6
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It's all personal opinion and you can start an argument of auto versus manual. Personally, with a V-8 I prefer an auto. You can't hardly shift a manual fast enough when you are in low range.

The real question is why you want a V-8. What do you plan to do with it? That will impact your decision on which trans to use. If you are doing it just to be cool, stick with the 6 cylinder.
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Old August 15th, 2011, 04:00 PM   #7
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I have one piece of advice. Get the motor, tranny & tcase from the same donor vehicle if at all possible, no matter what combo you go with.
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Old August 19th, 2011, 10:30 AM   #8
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After thinking it threw and looking at the engineering factor and budget I think I will just rebuild the six and keep the drive line , but I do need a transfer case , the one in there is what im told out of a AMC eagle , what transfer matches up with the stock chrysler auto ?
Dana 300?
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Old August 19th, 2011, 10:55 AM   #9
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If you do decide to do a conversion check these guys out. http://www.novak-adapt.com/index.htm Very nice products. At the very least, they have a lot of good information of strength/weakness of certain trans/motors and good combos.

One of our dealers in California specializes in LS1 conversions and uses Novak parts almost exclusively for everything he builds. Everything from Jeeps to high-end hot rods.
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Old August 26th, 2011, 10:56 AM   #10
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I dont know what your budget is but you can build a nice SBC for cheep. Then if your budget permits it then get a 9" for the rear and a Dana 44 for the front. Eventually thats what I'm going to do with my ranger, minus the SBC of course. The SBF I'm planning on building shouldn't cost me more then $3000, and thats for a 347 Stoker. You could go with a stock small block, or even the route your going by staying with the striaght 6 easily just by switching gears. The question is what size tires do you plan on running? I think this would be very fun with some 33's, 4.56's, and some lockers. Doing that you will still maintain your daily drivability. As of now I have 31's, 4.88's, and lockers, but I have a stock 3.0 V-6 and it will do fine. Of course I'm not conscerned with the daily drivability too much though cause I have 2 cars to drive everyday. But as far as everything is conscerned you should get a set of gears and lockers and you'll be fine. Those are cheap mods that will increase your power to the ground tremendously. If the Jeep in your picture is the one that you are building, it looks like its in great shape and good luck with the build. I'll definately keep eyes on this build to see how it goes.
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