Cylinder Head questions.
Thread Starter
Junior Member
Joined: Mar 2012
Posts: 34
Likes: 0
From: Virginia
Year: 2000
Model: Cherokee
Engine: 4.0L
I recently wrecked my awesome 2000 Sport via minivan. I had a 3" Rough Country lift, 31's and some other stuff.
I had to put a new head on my 2000 about a year ago, and only put about three thousand miles on it before the Jeep got smacked.
I have recently bought a 1997 Cherokee Country in need of a head.
It was owned by a little old lady, and the body and interior are in perfect shape.
Could I put the head from my 2000 on this '97? I know they have different casting numbers, but what's the difference?
Thank You
I had to put a new head on my 2000 about a year ago, and only put about three thousand miles on it before the Jeep got smacked.
I have recently bought a 1997 Cherokee Country in need of a head.
It was owned by a little old lady, and the body and interior are in perfect shape.
Could I put the head from my 2000 on this '97? I know they have different casting numbers, but what's the difference?
Thank You
CF Veteran
Joined: Jul 2013
Posts: 7,554
Likes: 17
From: Monett, MO.
Year: 1999
Model: Cherokee
Engine: 4.0
I would not do so as many people that need a head or complete engine for a 00/01 model just on here alone is a good reason to sell it and buy a new head for the 97. If you sold the complete engine you may have enough for a rebuild on your engine as well.
CF Veteran
Joined: Apr 2009
Posts: 4,734
Likes: 12
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
If the 2000 engine is overall better/less miles than the '97's, swap the whole long block over.
This is assuming there is no insurance company or settlement involved. If the other driver was at fault and had insurance, you might negotiate to swap your wheels and tires between the '00 and '97. That's about it.
This is assuming there is no insurance company or settlement involved. If the other driver was at fault and had insurance, you might negotiate to swap your wheels and tires between the '00 and '97. That's about it.
What head did you put on the 2000 when you swapped it out? Another 0331? Or a better quality head? That would be the question I would ask myself before making the change.
If the 2000 engine is overall better/less miles than the '97's, swap the whole long block over.
This is assuming there is no insurance company or settlement involved. If the other driver was at fault and had insurance, you might negotiate to swap your wheels and tires between the '00 and '97. That's about it.
This is assuming there is no insurance company or settlement involved. If the other driver was at fault and had insurance, you might negotiate to swap your wheels and tires between the '00 and '97. That's about it.
If you're insurance lets you, I'd buy the 00 back and sell the whole drivetrain. Maybe the axles if you had an 8.25. Could probably rebuild the 97 with that cash.
Apparently the best setup with all OEM stuff is 0669 head with 00+(?) intake manifold. It flows a bit better if IRC.
CF Veteran
Joined: Apr 2009
Posts: 4,734
Likes: 12
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
No, you just use the long block from the '00 and use all the peripherals from the '97.
Edit: Unless the '00 block has no prevision to install a distributor.
Edit: Unless the '00 block has no prevision to install a distributor.
Last edited by Firestorm500; Apr 22, 2016 at 07:32 PM.
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Thread Starter
Junior Member
Joined: Mar 2012
Posts: 34
Likes: 0
From: Virginia
Year: 2000
Model: Cherokee
Engine: 4.0L
I put another 0331 head on the 2000. But the company that manufactured it used a noticeably thicker casting.
Thread Starter
Junior Member
Joined: Mar 2012
Posts: 34
Likes: 0
From: Virginia
Year: 2000
Model: Cherokee
Engine: 4.0L
I think I may keep the 2000 and possibly fix it if possible. It got hit right at the passenger rear tire and smashed the door jam in and shoved the rear over a couple of inches.
For now, my best bet would be to buy the '97 and put a new head on it.
For now, my best bet would be to buy the '97 and put a new head on it.
I recently wrecked my awesome 2000 Sport via minivan. I had a 3" Rough Country lift, 31's and some other stuff.
I had to put a new head on my 2000 about a year ago, and only put about three thousand miles on it before the Jeep got smacked.
I have recently bought a 1997 Cherokee Country in need of a head.
It was owned by a little old lady, and the body and interior are in perfect shape.
Could I put the head from my 2000 on this '97? I know they have different casting numbers, but what's the difference?
Thank You
I had to put a new head on my 2000 about a year ago, and only put about three thousand miles on it before the Jeep got smacked.
I have recently bought a 1997 Cherokee Country in need of a head.
It was owned by a little old lady, and the body and interior are in perfect shape.
Could I put the head from my 2000 on this '97? I know they have different casting numbers, but what's the difference?
Thank You

The engine in the 2000 run well? correct?
Sell it as a complete runner for $800........leave it in the XJ so the buyer can hear it run.
Sell whatever good body parts......seats........trans........axles.......e tc........
You'll easily get $1200 or more.
Sell the carcass.........scrap........$150++
Now, take your proceeds and buy a new head for the 97........and related.........oil, gaskets........etc.......
You'll be $800 ahead.
I won't send you a bill for this advise.........saving you even more.
Thread Starter
Junior Member
Joined: Mar 2012
Posts: 34
Likes: 0
From: Virginia
Year: 2000
Model: Cherokee
Engine: 4.0L
CF Veteran
Joined: Apr 2009
Posts: 4,734
Likes: 12
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
I had two bad 0630s before I finally found a good one. Cost me a lot of money and time.
Any head can go bad. I'm beginning to think an inline six has more problems with the head than a V-8 or V-6 does. Maybe due to its length. Leverage principal.
Any head can go bad. I'm beginning to think an inline six has more problems with the head than a V-8 or V-6 does. Maybe due to its length. Leverage principal.
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
You might just need a gasket. No argument with F-Storm that a longer head might be more prone to cracking and warping. In my personal experience both my 4.0's are fine, and my 4 banger 2.5 head is what cracked. The replacement was warped a bit out of spec, but bolted it up with a new gasket and it's been fine.
I have two 2686...one Is over 280k, the other I can't say much of it's history, but over 200K on the odometer and it passed CA smog easily. Anyway I like to post this link of specks now and then> http://www.jeep4.0performance.4mg.com/tech_specs.html
Two minute Head Gasket test.
A quick head gasket check. Preferably with it warmed up; remove the radiator cap, fill it to the brim, and power-brake it with the cap off. Do please be careful. In drive, pressing on the gas, of course something could go really wrong. Your foot is firm on the brake, and no-one is in front of the Jeep! Give it medium throttle and watch the coolant at the filler. If the head gasket is really shot it will bubble, or even geyser out the filler as combustion gasses shoot past the gasket into the water jacket. This won't tell you it's OK, but it can be pretty clear if its bad. Sometimes some surging is normal. If it just comes up a little or spills a little you may still be OK.
I have two 2686...one Is over 280k, the other I can't say much of it's history, but over 200K on the odometer and it passed CA smog easily. Anyway I like to post this link of specks now and then> http://www.jeep4.0performance.4mg.com/tech_specs.html
Two minute Head Gasket test.
A quick head gasket check. Preferably with it warmed up; remove the radiator cap, fill it to the brim, and power-brake it with the cap off. Do please be careful. In drive, pressing on the gas, of course something could go really wrong. Your foot is firm on the brake, and no-one is in front of the Jeep! Give it medium throttle and watch the coolant at the filler. If the head gasket is really shot it will bubble, or even geyser out the filler as combustion gasses shoot past the gasket into the water jacket. This won't tell you it's OK, but it can be pretty clear if its bad. Sometimes some surging is normal. If it just comes up a little or spills a little you may still be OK.






