1998 jeep Cherokee 4.0 cyl head interchange - Moparts Forums

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1998 jeep Cherokee 4.0 cyl head interchange #1677180 09/26/14 10:30 AM 09/26/14 10:30 AM
Joined: Oct 2003 Posts: 1,244 Eastern,NC 6 68GTS383 OP pro stock
68GTS383 OP pro stock 6 Joined: Oct 2003 Posts: 1,244 Eastern,NC	I recently purchased a 1998 Cherokee Classic 4.0 with a cracked cylinder head. It is a clean 2wd with only 118K miles.What years of heads will directly bolt on? I am fixing this for my 16yo son who just got his license last week. Thanks!

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: 68GTS383] #1677181 09/26/14 02:32 PM 09/26/14 02:32 PM
Joined: May 2003 Posts: 1,722 Chicagoland Cooter top fuel
Cooter top fuel Joined: May 2003 Posts: 1,722 Chicagoland	Both '91-95 (casting #7120) and '96-98 (#0630) will work. #7120 is said to be a little beefier.

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: Cooter] #1677182 09/26/14 06:20 PM 09/26/14 06:20 PM
Joined: Oct 2003 Posts: 1,244 Eastern,NC 6 68GTS383 OP pro stock
68GTS383 OP pro stock 6 Joined: Oct 2003 Posts: 1,244 Eastern,NC	Thanks!

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: 68GTS383] #1677183 09/26/14 06:54 PM 09/26/14 06:54 PM
Joined: Jan 2003 Posts: 8,022 Tulsa OK Bad340fish master
Bad340fish master Joined: Jan 2003 Posts: 8,022 Tulsa OK	I believe the later model stuff will also work, only difference being there is provisions for the coil on plug setup. I don't believe it is in the way though. 68 Barracuda Formula S 340

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: Bad340fish] #1677184 09/26/14 10:09 PM 09/26/14 10:09 PM
Joined: Jan 2010 Posts: 1,088 st.cloud fl D d-150 Smarter than a 5th grader?
d-150 Smarter than a 5th grader? D Joined: Jan 2010 Posts: 1,088 st.cloud fl	u need the 0630 head and before bolting on change freeze plugs

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: d-150] #1677185 09/26/14 11:13 PM 09/26/14 11:13 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	Great vehicles. My daughter's '01 has around 135k and she loves it.

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: ahy] #1677186 09/26/14 11:26 PM 09/26/14 11:26 PM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power master
bigblock340power master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	My '98 has been great too. Only thing is now I can't get the heater to blow hot. I've flushed out the heater core, and the other water parts. It will get hot till I start the blower, then it just blows cooler and cooler till it's all cold. I've been told about an air direction door that could be not working right.

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: bigblock340power] #1677187 09/27/14 03:22 AM 09/27/14 03:22 AM
Joined: May 2003 Posts: 1,722 Chicagoland Cooter top fuel
Cooter top fuel Joined: May 2003 Posts: 1,722 Chicagoland	How did you flush out the heater core? Also, are both hoses to the heater core hot with the heat on? As for later heads on the '98, pretty sure that the '99-04 #0331 heads require a different exhaust manifold. Plus they are known for problems with cracks.

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: Cooter] #1677188 09/27/14 06:00 AM 09/27/14 06:00 AM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power master
bigblock340power master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	Quote: How did you flush out the heater core? Also, are both hoses to the heater core hot with the heat on? As for later heads on the '98, pretty sure that the '99-04 #0331 heads require a different exhaust manifold. Plus they are known for problems with cracks. Took the heater core lines off at the nipple fittings (on the engine). Flushed them with semi-high pressure water, back and forth till the water ran clean and open. I think the both heater hoses are hot.

Re: 1998 jeep Cherokee 4.0 cyl head interchange [Re: bigblock340power] #1677189 09/29/14 11:16 PM 09/29/14 11:16 PM
Joined: May 2003 Posts: 1,722 Chicagoland Cooter top fuel
Cooter top fuel Joined: May 2003 Posts: 1,722 Chicagoland	Yeah, sounds like an air door issue.

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