putting an amc 258 in my cherokee.
02-10-2010, 09:01 PM
#1
CF Veteran
Thread Starter
Join Date: Dec 2009
Location: Oxford NC
Posts: 1,882
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L
putting an amc 258 in my cherokee.
really thinking aobut this right now. what all would i need. the motor is out of a 1980 jeep cj7 its carbed. bored .60 over
02-10-2010, 09:15 PM
#4
CF Veteran
Thread Starter
Join Date: Dec 2009
Location: Oxford NC
Posts: 1,882
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L
because i've rebuilt the 258.. it sounds better. it runs better. it doesnt burn oil.. its bored .60 over its carbed.. has a holley 390 4 barrel on it. thing is beast.
02-10-2010, 09:40 PM
#7
CF Veteran
Join Date: Nov 2009
Location: New Jersey
Posts: 1,261
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 HO
You could search for a bellhousing adapter so you can stick with the auto trans in your Jeep. It's a lot more work than people think to convert an auto to a manual. It's not as easy as just slappin a trans in. Need to cut holes and what not for the shifter, fab brackets for the pedal assembly, run the clutch cable or hydraulic lines, etc. So if you can find a bellhousing adapter, it shouldn't be impossible.
Trending Topics
02-10-2010, 09:44 PM
#8
CF Veteran
Thread Starter
Join Date: Dec 2009
Location: Oxford NC
Posts: 1,882
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L
where do i start to look and who wants to help me do this swap lol? are my gas lines and everything going to go ok because mines fuel injected and the others carbed
02-10-2010, 09:53 PM
#9
CF Veteran
Join Date: Nov 2009
Location: New Jersey
Posts: 1,261
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 HO
Well considering the AMC 258 is an older engine, it probably has a mechanical fuel pump and your Jeep has an electronic fuel pump. Just google a 258 to 4.0 swap and it should give you some insight. You're just doing the reverse swap, so it shouldn't be impossible.
02-11-2010, 08:04 PM
#10
Seasoned Member
Join Date: Nov 2009
Location: sarasota Fl
Posts: 279
Likes: 0
Received 0 Likes
on
0 Posts
Year: 91
Model: Cherokee
Engine: 5.9
I put an AMC 360 in mine and with a mechanicle fuel pump all you have to do is cut the wires to the fuel pump to avoid floding the engine, big pressure difference from fuel injected to carb.
02-11-2010, 08:24 PM
#11
CF Veteran
Thread Starter
Join Date: Dec 2009
Location: Oxford NC
Posts: 1,882
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L
will the valve cover from the 258 work on my 4.0? because they make cool covers for the 4.2 and not so many for the 4.0
02-11-2010, 08:49 PM
#12
Seasoned Member
Join Date: Jan 2010
Location: smyrna,de
Posts: 293
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0
y not just stick with fuel injection? just swap everything over to the 4.2 258.
just looked them up the fuel injection will swap over distributor also everything else is just sensors. the trans looks to mount the same. as far as i know the 4.2 and 4.0 are essentially the same block just different strokes
just looked them up the fuel injection will swap over distributor also everything else is just sensors. the trans looks to mount the same. as far as i know the 4.2 and 4.0 are essentially the same block just different strokes
Last edited by djritter1122; 02-11-2010 at 08:59 PM.
Thread
Thread Starter
Forum
Replies
Last Post
2000JGC
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
1
09-03-2015 09:53 PM
RickJames Bish
Modified XJ Cherokee Tech
5
09-02-2015 03:22 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)