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BrandonV
10-16-2012, 07:26 PM
gentleman I'm sure someone on here has done an engine swap on a CJ. mine is in need and I'm debating upgrading from the 4 cy I have now to the 6. Anyone know what's involved? I'm not sure if it'd be worth it to me if I have to changed to many parts out I've always been pretty happy with the 4, it sure isn't fast but I'm not drag racing it.

ecurbthims
10-17-2012, 07:25 PM
I have owned and rebuilt 98 small jeeps ,and have done many swaps .What year and type is your cj as they made them with 4 cylinders for 40 years ?auto or manual ?
Anyways ,the easiest way to accomplish what you want is to pick up a complete 6 cylinder jeep of the same general vintage and swap what you need.Assuming its a newer cj ,the next easiest way is to swap in a 4 litre from a 91-up yj ,or cherokee ,but you will need the wiring harness and all the bits and pieces .The front driveshaft is on the wrong side from the newer trucks ,but can be overcome easily .
The last way would involve a gm 4.3 swap .You would either swap the engine,tranny and transfercase as a unit ,or you can buy an adapter from somebody like advance adapters who specialise in engine swaps .
Theres probably hundreds of combos that can be made to work ,some easy ,some not so much ,and joining a jeep site or two [jeepkings ,or pirate4x4 ] will get you many nights of reading an unbeleivable amount of info .
Good Luck !

knox gsl
10-17-2012, 07:35 PM
Swap in a cummins 4BT and get some fuel milage out of it.

ecurbthims
10-17-2012, 07:35 PM
Sorry ,I just re-read your posts title ,did you honestly say jeep scrambler ?as in cj8 ? if so check around before cutting up a scrambler ,they have a huge premium as they are very rare and desirable ,the last one I had sold for $24000.00 and if it was a cj7 in the same condition might of fetched$10000.00 .I left the jeep word 3 years ago so prices are probably not quite the same ,but check things out very well before doing anything .

jsslawncare
10-17-2012, 08:16 PM
I'm thinking AMC 401! There's no replacement for displacement.

BrandonV
10-17-2012, 09:07 PM
1981 jeep scrambler 4cyl, manual. my grandfather bought it back in the day, it's the same age as me. I won't be selling it I just want to get it to the point I can do more than drive it around the farm.

ecurbthims
10-17-2012, 09:40 PM
I am drooling !
For something that nice ,find yourself a cj7 6 cylinder rotted out and swap the drivetrain .Keep everything you remove from yours ,you might want to restore it in the future ,or your kids might and the original parts would make that easier .This would be a very easy project ,jeeps of that vintage are very basic .
Not sure if you know ,but collins brothers jeeps have pretty much the best assortment of cj8 parts around ,new or used ,and quadratec is like a jeep wallmart ,order the catalogues and start having fun .Also ,your cj is really just a cj7 with a little more wheelbase and cargo space ,other than the rear driveshaft length ,the tops, and the extra frame and body length ,pretty much everything from a cj7 will be a direct bolt on .Most suppliers dont have listings for the cj8 ,so order cj7 stuff for it and you will be fine .

BrandonV
02-28-2013, 08:54 PM
we opted to drop in a 350 chevy that we had in another truck that was falling apart... of course the engine was rebuilt recently and had a great transmission as well. also ordered an Air Conditioning kit :-)

southern79
02-28-2013, 09:12 PM
Dropped a 350 with Howell fuel injection in mine. Also upgraded to TH350 trans. 8 years ago. Not a single problem since. Awesome.
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ecurbthims
02-28-2013, 09:20 PM
youre going to want a brake booster with the engine swap .

BrandonV
02-28-2013, 09:29 PM
youre going to want a brake booster with the engine swap .

i'll mention that

southern79
02-28-2013, 09:31 PM
I'll second the brake booster!
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southern79
02-28-2013, 09:34 PM
Check this out:

http://howellefi.com/tbi-kit-universal-v-8.html
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ecurbthims
02-28-2013, 10:12 PM
Another great thing about a scrambler with a v8 ,is the fact its the only cj with enough room under the body for a fuel tank big enough to go anywhere .

BckYrdLmbrJk
03-01-2013, 10:20 AM
Thats a beautiful old Jeep! I love my straight six! 220k on mine. Great engine.

BrandonV
03-01-2013, 02:03 PM
Orderd a brake booster as well.. Y'all can stop making me spend my limited funds
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Cooter
03-03-2013, 09:19 PM
That's crazy. I have an 81 Scrambler w same paint scheme. Nice Jeep.
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BrandonV
03-19-2013, 10:59 PM
got a question: so with the addition of AC and auto transmission we thought it a good idea to get a bigger radiator... the only one I've found is this :http://www.jeep4x4center.com/radiator-aluminum-transmission-cooler-built-in-gm-v8-aa-716690-aa.html

anyone know of a non-alumninium one? seems real steep and I'd think steel would be 1/2$

BrandonV
05-09-2013, 10:11 PM
who wants progress photos?

southern79
05-09-2013, 10:22 PM
That is going to be a nice ride! Did you look into the Howell fuel injection? Worth every penny! (If you have the pennies)
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BrandonV
05-09-2013, 10:30 PM
i'm running out of pennies. I may look into that later as it seems like it's not a ton of work to put in. between all the adapters and etc i'm getting tired of spending :-) that and I haven't even started on the body work!!!

southern79
05-09-2013, 10:37 PM
Not a ton of work. If you are doing any work to the fuel tank, go ahead and add a return port. Other than that, about 5-6 hours to install. Had mine for approx 10 years. Not a single adjustment or hiccup. Adjust mixture in the mountains and doesn't stall on steep slopes. Plus a lot more low end torque. My suggestion would be get your jeep running and enjoy it before starting the body work. Don't want to lose interest with one long project. Break it up into two or more parts.
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BrandonV
05-10-2013, 06:58 PM
i have few rust spots and the poor thing has never had a paint job since it was new. as much as I like to paint it original I'm thinking of making it match the rest of the fleet. I'm planning on using it as a run about when I'm not in one of the big trucks... that and I'm a little OCD about things matching

BrandonV
05-10-2013, 06:59 PM
not my jeep just a one I pulled off the web and changed to colors to play around with.

BrandonV
05-19-2013, 10:57 AM
That is going to be a nice ride! Did you look into the Howell fuel injection? Worth every penny! (If you have the pennies)
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surprise! the gentleman doing this actually pull out the fuel injection system of my donor truck and tinkered with it getting it to work again in the jeep. happy happy happy. Actually got to drive it a little friday (one and off the trailer) in order to get an exhaust system put on because it has proven a little loud with just the headers. Pretty much just have to tune it up and put things back together and then we're off to body work.