240 or 250 inline six?
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Joined: Dec 2007
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From: Boise, Idaho
Those are pretty much official numbers on the hp/tq of the 4.0HO. 190/225. Any documentation you find on the internet or otherwise will verify and say the same thing.
As for my brother's Cherokee with the 4.0HO, it will drive circles around my 4.9 any day of the week (before and after my 4bbl conversion). He ran a low 16, high 15 quarter mile with it stock. It does not mess around.
Of course, once it comes to torque, I'd shred him to pieces without batting an eye.
I think it has quite a few differences from the non HO. Cam, exhaust, fuel injection system, computer, etc.
As for my brother's Cherokee with the 4.0HO, it will drive circles around my 4.9 any day of the week (before and after my 4bbl conversion). He ran a low 16, high 15 quarter mile with it stock. It does not mess around.
Of course, once it comes to torque, I'd shred him to pieces without batting an eye.
I think it has quite a few differences from the non HO. Cam, exhaust, fuel injection system, computer, etc.
Elder User
Joined: Jan 2009
Posts: 774
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From: East Tennessee
I've hauled a early 90's Jeep Cherokee to the crusher before, and without gas tank, wheels/tires, it weighed in at something like 2750 lbs. Then I went home and looked up about them, and they really are light. My truck weighed 5100 lbs that day, including a little dolly that I pulled it with (pretty light). I weigh 225 and didn't have much gas.
I have rode in another Jeep Cherokee like that one, and those 4.0's are impressive down low. But I don't think they'd feel good in a 5000 pound truck like the 300-6 does. Those Jeep Cherokees are LIGHT.
I have rode in another Jeep Cherokee like that one, and those 4.0's are impressive down low. But I don't think they'd feel good in a 5000 pound truck like the 300-6 does. Those Jeep Cherokees are LIGHT.
Post Fiend
Joined: Jan 2007
Posts: 7,021
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From: Almost Heaven
I've hauled a early 90's Jeep Cherokee to the crusher before, and without gas tank, wheels/tires, it weighed in at something like 2750 lbs. Then I went home and looked up about them, and they really are light. My truck weighed 5100 lbs that day, including a little dolly that I pulled it with (pretty light). I weigh 225 and didn't have much gas.
I have rode in another Jeep Cherokee like that one, and those 4.0's are impressive down low. But I don't think they'd feel good in a 5000 pound truck like the 300-6 does. Those Jeep Cherokees are LIGHT.
I have rode in another Jeep Cherokee like that one, and those 4.0's are impressive down low. But I don't think they'd feel good in a 5000 pound truck like the 300-6 does. Those Jeep Cherokees are LIGHT.
The Jeep I moved felt very strong down low. I barely touched the gas pedal and it threw me back in my seat. I know a Jeep could run circles around my truck. I'd like to hook up to one bumper to bumper though just for fun. I wonder how a Jeep powered by a 4.0 would do against an F-150 with a 302? I would think the 302's added torque would give it the advantage, but again the Jeep is lighter.
Come on folks, I know one of you has a 4.0 powered Jeep. Let's all get together and have some fun and see what these machines can do!
Posting Guru
Joined: Sep 2004
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From: Yokosuka, Honshu, Japan
I think it has to do with engine management, throttle body, different head, injectors(?) and other odds and ends. I know the HO had a higher HP and TQ rating, but don't know the exact numbers.
Elder User
Joined: Sep 2005
Posts: 647
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From: Brumley, MO
The 4.0's are sweet, probably my favorite engine, plenty of low end and decent top end too. You can stroke the 4.0 to a 4.5 using the 4.2 crank, and there is even a stroker kit that makes it a 5.0 and it has about the same power as the 5.7 Hemi.
Senior User
Joined: Aug 2008
Posts: 216
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From: South Africa
Me to!
How you doin chum?
In my part of the mud hole we get the wrangler in diesel to, think its an ex Merc 2.8 Cdi. Lovely tq! Was surprised to see the Jeep 4.0 i6 makes little less power n tq than the Ranger 4.0 V6. Both still nice relative oldschool engines. Also, its tq came at higher revs.
Think the bumper pulling excersise (jeep vs yer F150) will mainly come down to traction...
Nice thread this one.
-Valdor
How you doin chum?
In my part of the mud hole we get the wrangler in diesel to, think its an ex Merc 2.8 Cdi. Lovely tq! Was surprised to see the Jeep 4.0 i6 makes little less power n tq than the Ranger 4.0 V6. Both still nice relative oldschool engines. Also, its tq came at higher revs.
Think the bumper pulling excersise (jeep vs yer F150) will mainly come down to traction...
Nice thread this one.
-Valdor
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Joined: Dec 2007
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From: Boise, Idaho
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Post Fiend
Joined: Jan 2007
Posts: 7,021
Likes: 5
From: Almost Heaven
Me to!
How you doin chum?
In my part of the mud hole we get the wrangler in diesel to, think its an ex Merc 2.8 Cdi. Lovely tq! Was surprised to see the Jeep 4.0 i6 makes little less power n tq than the Ranger 4.0 V6. Both still nice relative oldschool engines. Also, its tq came at higher revs.
Think the bumper pulling excersise (jeep vs yer F150) will mainly come down to traction...
Nice thread this one.
-Valdor
How you doin chum?
In my part of the mud hole we get the wrangler in diesel to, think its an ex Merc 2.8 Cdi. Lovely tq! Was surprised to see the Jeep 4.0 i6 makes little less power n tq than the Ranger 4.0 V6. Both still nice relative oldschool engines. Also, its tq came at higher revs.
Think the bumper pulling excersise (jeep vs yer F150) will mainly come down to traction...
Nice thread this one.
-Valdor
You guys get all the Diesels.
Traction and weight, I agree.
How are the 4.0 and your 4.9 set up? I know yours is 4BBL carb with 3.00 gear ratio. How about the 4.0? I would like to see your Bronco race that Jeep and then have a truck pull.
Moderator
Joined: Dec 2007
Posts: 7,987
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From: Boise, Idaho
The jeep has the same tire size, but has the 4spd auto, and 3.55 gearing. As of right now, it'll pull like crazy on the Bronco. Once I get this 4bbl completely tuned how I want it, hopefully that'll be a different story. 
And we'll get some videos. As for a pulling match....I'd love to, but he might get mad when his Jeep breaks. 
I still need to get videos of this carb setup and some exhaust clips.
And we'll get some videos. As for a pulling match....I'd love to, but he might get mad when his Jeep breaks. I still need to get videos of this carb setup and some exhaust clips.
Post Fiend
Joined: Jan 2007
Posts: 7,021
Likes: 5
From: Almost Heaven
The jeep has the same tire size, but has the 4spd auto, and 3.55 gearing. As of right now, it'll pull like crazy on the Bronco. Once I get this 4bbl completely tuned how I want it, hopefully that'll be a different story. And we'll get some videos. As for a pulling match....I'd love to, but he might get mad when his Jeep breaks.
I still need to get videos of this carb setup and some exhaust clips.
And we'll get some videos. As for a pulling match....I'd love to, but he might get mad when his Jeep breaks. I still need to get videos of this carb setup and some exhaust clips.
His Jeep has lower gearing than you do. He might give you hard time in the pulling department. However your Bronco is heavier so who knows!
Elder User
Joined: Sep 2005
Posts: 647
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From: Brumley, MO
I think if you hot rodded a 300 I think it would perform like a 4.0 only way bigger. The 4.0's strongest quality is it's low end torque and reliability, but it can also rev. The 1 bbl 258 has torque ratings similar to a carbed 300, simillar peak torque 1500-2000 somewhere in there anyway I think it has 15 or 20 less pond feet of torque. I think as far as a tug of war it'd be better to find a J-10 with a 258, it'd be more even. 4.0>1bbl carb 300 in almost every category(300 might have more low end, but not much more I don't think). 300 4bbl/EFI>4.0 DUH!! 4.0 Stroker> everything. Just my opinion.
Moderator
Joined: Dec 2007
Posts: 7,987
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From: Boise, Idaho
I think if you hot rodded a 300 I think it would perform like a 4.0 only way bigger. The 4.0's strongest quality is it's low end torque and reliability, but it can also rev. The 1 bbl 258 has torque ratings similar to a carbed 300, simillar peak torque 1500-2000 somewhere in there anyway I think it has 15 or 20 less pond feet of torque. I think as far as a tug of war it'd be better to find a J-10 with a 258, it'd be more even. 4.0>1bbl carb 300 in almost every category(300 might have more low end, but not much more I don't think). 300 4bbl/EFI>4.0 DUH!! 4.0 Stroker> everything. Just my opinion.
carb'd 300: 120hp/255tq EFI 300: 150hp/260tq
4.0 HO: 190hp/225tq
A hotrodded 300 though... There are kits from cliffordperformance that'll let it rev to 6500 RPMs. Add that with 300 cubic inches, a full exhaust, and a 4bbl intake and performance cam. It's going to eat any 4.0 alive.
Now, what a 4.0 has going for it IS the stroker kit. Not only that, but there are bolt on superchargers readily available. I think a stroker kit + supercharger puts them in the 400/400 range. Yikes.
Posting Guru
Joined: May 2007
Posts: 1,208
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From: North Reading Mass
I had a 258 2v in a Concord wagon and was amazed at how much power it had. The hospital where I worked had a J20 4x4 with the 258 with 4 speed. It was all truck and I hauled 2 700 lb A/C compressors several hundred miles round trip It was geared low and had deep lug snow tires so a steady 55 was all it could go.
Until I got my EFI 300 I considered the 258 2bbl the best I6. The early (non HO) 4.0l in my Cherokee was rated at 170hp and it had very good acceleration and high speed cruise ability but would be taxed with any kind of a load. My daughter had the 190 hp 4.0 in her Cherokee and it seemed to haul the 2000 lb a little easier than mine but it also had a 100k less miles.
I like the 50 extra cubic inches, torque, and reliability of the 300 for a truck.
regards
rikard
Until I got my EFI 300 I considered the 258 2bbl the best I6. The early (non HO) 4.0l in my Cherokee was rated at 170hp and it had very good acceleration and high speed cruise ability but would be taxed with any kind of a load. My daughter had the 190 hp 4.0 in her Cherokee and it seemed to haul the 2000 lb a little easier than mine but it also had a 100k less miles.
I like the 50 extra cubic inches, torque, and reliability of the 300 for a truck.
regards
rikard
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From: Eastern Shore, Md.