151 vs 258 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > 151 vs 258

FS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed LineFS: Wranger BRIGHT License Plate LED! Just $3! Great value

Reply
Unread 05-08-2014, 07:26 AM   #1
jdtopgun71
Registered User
 
Join Date: Oct 2011
Location: Virginia Beach, Virginia
Posts: 11
151 vs 258

I know one is a 4 cylinder and the other is a 6, but can I get some opinions on which way you guys would go if you were buying your first CJ?

I had an opportunity to buy an 83 CJ7 with the Iron Duke, but was worried about the lack of power.

jdtopgun71 is offline   Reply With Quote
Unread 05-08-2014, 08:11 AM   #2
HackFabrication
Registered User
1976 CJ5 
 
Join Date: Nov 2007
Location: Canton, Michigan
Posts: 2,458
Don't try to put big tires on it and expect to keep up on the interstates, The Duke will be fine.
__________________
"In the end...It's all Hack."
HackFabrication is offline   Reply With Quote
Unread 05-08-2014, 08:29 AM   #3
WindKnot
Web Wheeler
 
WindKnot's Avatar
1977 CJ7 
 
Join Date: Mar 2011
Location: , Northern Arizona
Posts: 2,651
I would try to find a 6. The 4 may be fine for around town daily driving, but on the freeway and hilly trails it's... lacking.
__________________
Paved roads are just for getting you to the starting point!
WindKnot is offline   Reply With Quote
Unread 05-08-2014, 08:34 AM   #4
station10fd
Registered User
1984 CJ7 
 
Join Date: May 2007
Location: lubbock, Texas
Posts: 224
Been running a 4 banger the last 4 years with 33's. In town it was fine, actually got decent fuel mileage, forget about ever getting on the highway with those tires especially with a headwind. My Tranny gave out last year, swapped in a SBC 350/Sm465, now it's goes anywhere.
station10fd is online now   Reply With Quote
Unread 05-08-2014, 09:35 AM   #5
CJ65
Registered User
1986 CJ7 
 
Join Date: Mar 2011
Location: Simi Valley, CA
Posts: 125
Hold out for a 258.
CJ65 is offline   Reply With Quote
Unread 05-08-2014, 11:10 AM   #6
Mike Romain
Registered User
1986 CJ7 
 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant, Nova Scotia, Canada
Posts: 11,951
It really depends on what you want to do with it. I recommend the most bone stock, rust free one, no matter the motor. Folks tend to drive to the limits of the mods, which makes for high wear.

As far as power goes, I have wheeled beside lots of 4 bangers and never noticed until engines were talked about. We had to do a 65 mph trip to get to the wheeling spot also. A few of the Jeeps in my sig line photos are 4 bangers. Actually some of the V8's had more issues on the sand pit wall climbs... To much oomph isn't always a good thing. Lol.
__________________
Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
Mike Romain is online now   Reply With Quote
Unread 05-08-2014, 11:24 AM   #7
mastercraftka
Web Wheeler
 
mastercraftka's Avatar
1984 CJ7 
 
Join Date: Nov 2009
Location: Hondo, Texas
Posts: 1,008
258
__________________
1984 CJ 7
1948 CJ 2A
1982 CJ 7
1981 CJ 7
mastercraftka is offline   Reply With Quote
Unread 05-09-2014, 04:34 PM   #8
Hilux
Registered User
1980 CJ7 
 
Join Date: Nov 2013
Location: Coos Bay, Oregon
Posts: 31
I just bought a 151 four cylinder for $75 I am boiling it in purple power and pressure washer soap right now to degrease it and will be rebuilding it in a while , I am yanking out the 350 to put it in my 1985 Chevy pickup , I may be the only person on Earth to replace a 350 with a 151 four cylinder
Hilux is offline   Reply With Quote
Unread 05-09-2014, 06:54 PM   #9
strvger01
Registered User
1966 CJ5 
 
Join Date: Oct 2012
Location: Two Harbors, Minnesota
Posts: 1,099
there are forums where they update the 151 power with marine 120/140 engine parts. they share the same iron duke block. even the marine 3.0 is from the same original 151 block. there are things you can do with those little guys for sure. it's been awhile and i didn't save the links, so might try a google search.
the other, more obvious, power fix would be a gear swap. going to 4.88 or even lower will get the most from the 4 banger. just depends on your needs.
__________________
1966 CJ5A, mods are coming
1966 Wagoneer, bone stock
strvger01 is offline   Reply With Quote
Unread 05-09-2014, 09:24 PM   #10
Knucklehead
Registered User
1973 CJ5 
 
Join Date: Jan 2002
Location: Virginia Beach, VA
Posts: 184
Quote:
Originally Posted by Hilux View Post
I just bought a 151 four cylinder for $75 I am boiling it in purple power and pressure washer soap right now to degrease it and will be rebuilding it in a while , I am yanking out the 350 to put it in my 1985 Chevy pickup , I may be the only person on Earth to replace a 350 with a 151 four cylinder
You will be disappointed...or without a pulse.
__________________
Ty
'45 Ford GPW; '73 CJ5, 350/NP435/D20 w/Terlow gears, locked D30/D44; '13 CJ8, 304/T150/D20/D30/AMC20 w/locker and limited slip (T18 and Teralow gears in future); '88 Dodge RC, 360/NP435/NP205/D60s
Knucklehead is offline   Reply With Quote
Unread 05-10-2014, 01:33 AM   #11
hicks1983
Registered User
1985 CJ7 
 
Join Date: Apr 2014
Location: Portland, OR
Posts: 150
4 bangers just trip on their own dikks
hicks1983 is offline   Reply With Quote
Unread 05-10-2014, 01:51 AM   #12
seabass1858
CJ Literate
 
seabass1858's Avatar
1983 CJ7 
 
Join Date: Jul 2013
Location: FT Benning, Georgia
Posts: 1,204
The 151 is better than the 134f head I have and with of I am able to go 0-70 in 15 minutes lol but seriously a 151 and 235s tires will do fine
seabass1858 is offline   Reply With Quote
Unread 05-11-2014, 09:09 AM   #13
Hilux
Registered User
1980 CJ7 
 
Join Date: Nov 2013
Location: Coos Bay, Oregon
Posts: 31
Quote:
Originally Posted by Knucklehead View Post
You will be disappointed...or without a pulse.
I am not a speed freak , a 4 cylinder will do just fine .
Hilux is offline   Reply With Quote
Unread 05-11-2014, 05:59 PM   #14
CJ7nvrstk
Registered User
1985 CJ7 
 
Join Date: May 2011
Location: Prosper, Tx
Posts: 535
Depends on your needs and uses. If you're planning on DD in 70 mph traffic forget the 4 banger. Trail only rig, a geared 4 can do pretty well.

That being said, my CJ came to me with a 4. I beat the snot out of it and it held up great. Swapped in a 258 which improved daily drivability but it still wasn't enough so there is now a built 360 in there.
__________________
The Cooper AT3 is a "hardcore AT" that "is the definition of aggressive"! Alrighty then!
CJ7nvrstk is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.