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5.0 motor swap

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Old Sep 11, 2009 | 09:31 PM
  #31  
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The only question i have is why are you wanting to install a 5.0 in the first place.

Unless your going to run something bigger then 35's daily the 4.0 will do everything you need. Plus if you do go bigger then 35's your going to need a good size lift and new axles since the dana 30 front axle wont handle the tourqe of the 5.0 with anthing bigger then 35's unless you do some decent build on the dana 30 then you might as well just swap it out with a dana 44 front axle.

I have a cousin that has a 1994 cherokee sport with a 5.0 out of a 93 gt and he is always have major issue on the trail with breaking axles and also overheating all the time.

I can ask him what he used to hook everything up like what adaptors he used.

But to learn from his mistakes make sure you spent good money on bigger axles if you plan to run anything over 35's and also get a good size radiator upgrade and you will need to run a electric fan and waterpump do to fitment issues.

His is a nice build but it not a budget build by any means i think he spent about 6,000 after finally upgrading the cooling system and putting a dana 44 up front and also having to install a 5" lift to clear the pan.

If you want more info i can get it from him.

As for installing a 5.0 vs a 350 chevy both will have some plus's there great aftermarket for both of course but the chevy will have great jeep aftermarket adaptor wise since alot of wrangler/cj7 had 350 swapped in them but you will still be able to find adaptors for the 5.0 with out a issue also the 350 does have the advantage of no oil pan issues's but if your more comfortable with a 5.0 then go with what you know.

Last edited by jeepxjho; Sep 11, 2009 at 09:35 PM.
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Old Sep 11, 2009 | 09:34 PM
  #32  
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I ran a 302 with a 4brl crab and cam in my cj2a with 5.38 gears on 33" tires
and it got as good of mileage as my 91 Cherokee with the 4.0
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Old Sep 11, 2009 | 09:37 PM
  #33  
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and I used the stock Dana up front and the d41 in back
just need to use the skinny peddle right
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Old Sep 11, 2009 | 09:43 PM
  #34  
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Originally Posted by jusper88
So first, your calling me a liar saying no 4.0 will make 25 mpgs? Second, I know strip driving is rough on an engine...but how about mudbogging in deep mud? About as rough...wouldn't you say?
x2, and having mud and dirt constantly making its way into the motor and all the elements beating onto the 4.0s, id say they live hard lives
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Old Sep 11, 2009 | 09:48 PM
  #35  
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Also as for mpg dont expect anywhere near 25mpg he gets about avg 16 mpg if he doesnt romp it all the time.

If you want a good idea look at a 1995 ford explorer with the 5.0 option they get around 14 to 17 mpg and are alot more aero dynamic then the cherokee is, granted it is about 500lbs heavier but you get the idea.
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Old Sep 12, 2009 | 01:00 AM
  #36  
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well i didnt want this to happen. sorry i caused a fight, everyone has there own preferance for a motor..but you cant argue that a 302 is a much more powerful motor all around. and will get better gas mileage...ive read up on some other 5.0 swaps from a 4.0 and everyone said the gas mileage went up....MIKE H said it all in his post..you cant argue with those numbers especially with those horrible stock heads that are on a 302.

Originally Posted by mike37
I ran a 302 with a 4brl crab and cam in my cj2a with 5.38 gears on 33" tires
and it got as good of mileage as my 91 Cherokee with the 4.0
theres your proof right there that 302 will get better gas mileage. if ur running a carb and a 5.38 gear and ur gettig the same gas mileage as a motor one liter smaller thats just sad.

and i think everyone will agreed a cammed 302 sounds much better then a 4.0 will ever sound lol..i say go big or go home lol

anyway lets stop asking why and just get back to the basics of the swap. i really appriciate all your guys help on this subject and sorry again i caused a debate
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Old Sep 12, 2009 | 08:30 AM
  #37  
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what year is the 5.0? i was wanting to do the same thing with an 84 carbed 302. w/ high rise and 4 brl.
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Old Sep 12, 2009 | 09:22 AM
  #38  
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Originally Posted by jusper88
So first, your calling me a liar saying no 4.0 will make 25 mpgs? Second, I know strip driving is rough on an engine...but how about mudbogging in deep mud? About as rough...wouldn't you say?
Easy now... I said it's rare...
Never though about mud bogging... ya I'd say it's comparable if you beat the rig in the bog.

Last edited by Mike H.; Sep 12, 2009 at 09:31 AM.
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Old Sep 12, 2009 | 09:29 AM
  #39  
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Originally Posted by Cherokee 4.0
actually 4.0s motors can make comparable power that mustang motor, turbo the 4.0 and put a computer in with an exhaust and throttle bot=dy and intake and youll pull 300 + horsepower with comparable torque
put a turbo on the 5.0 and make 400+... bore/stroke the 5.0 add the turbo and 500+hp is within reach.
Just say'n.
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Old Sep 12, 2009 | 09:32 AM
  #40  
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Originally Posted by mike37
I ran a 302 with a 4brl crab and cam in my cj2a with 5.38 gears on 33" tires
and it got as good of mileage as my 91 Cherokee with the 4.0
Not to knock you BUT 5.38's on 33's?

That's why you got crappy gas mileage.

At best with a V8 and 33's you'd want to be running 4.56 to 4.88 gears.

You lost your gas mileage cause you went for a torqy set-up not a gas mileage setup.

In a wheeling rig that's great but if you wanted mileage you'd run a different gearing.

Just my $.02 on the topic.

I'm also a die hard 302 fan.
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Old Sep 12, 2009 | 11:08 AM
  #41  
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I would rather build a 4.6L stroker than do a 5.0 swap myself.
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Old Sep 12, 2009 | 11:10 AM
  #42  
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put a turbo on the 5.0 and make 400+... bore/stroke the 5.0 add the turbo and 500+hp is within reach.
Just say'n.
Sure you can make the horsepower, but you cant match the torque line of a stroked and supercharged straight six. Look at the 4.9 Stroker...
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Old Sep 12, 2009 | 11:39 AM
  #43  
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Originally Posted by nick_n_ii
Not to knock you BUT 5.38's on 33's?

That's why you got crappy gas mileage.

At best with a V8 and 33's you'd want to be running 4.56 to 4.88 gears.

You lost your gas mileage cause you went for a torqy set-up not a gas mileage setup.

In a wheeling rig that's great but if you wanted mileage you'd run a different gearing.

Just my $.02 on the topic.

I'm also a die hard 302 fan.
I'm not saying it got crappy mileage it got good mileage for the setup
as good as my current Cherokee dos now but double the power about 14mpg

Last edited by mike37; Sep 12, 2009 at 11:41 AM.
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Old Sep 12, 2009 | 11:47 AM
  #44  
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Originally Posted by (Eckks-Jay)
Sure you can make the horsepower, but you cant match the torque line of a stroked and supercharged straight six. Look at the 4.9 Stroker...
you have ben reading to many 4.0 tabloids

4.0 is a good motor
but a SBF is better I would be running one now if I wasn't in California
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Old Sep 12, 2009 | 01:11 PM
  #45  
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Originally Posted by thurobred1320
anyway lets stop asking why and just get back to the basics of the swap.


i kinda think this needs to be brought up cause he is not asking opinions on the 4.0's gas mileage in comparasion to the 5.0, he is asking if the swap has been done and what to use for adapters, it seems like his mind is already made up on the SBF so why discuss the 4.0

just thought id butt in
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