Need more power from the 'ol 258 -
LinkBack Thread Tools
post #1 of 2 Old 10-21-2007, 12:17 PM Thread Starter
Registered User
Join Date: May 2004
Posts: 20
Need more power from the 'ol 258

I can't find much info on getting more power out of it, except a few articles here and there.
Is the 4.0 head swap really worth 40hp? Because thats quite a bit for a simple head swap. Are there any other power adders for relativley cheap(i'm not going out buying a blower or turbo)? Like maybe headers, carb, etc? I've been trying to search but I haven't yielded much.
The motor is in a '85 CJ7 if it matters any.

Fyren is offline  
Sponsored Links
post #2 of 2 Old 10-21-2007, 10:09 PM
Registered User
jeepdaddy2000's Avatar
1971 CJ5 
Join Date: Jan 2002
Location: Eagle Point
Posts: 7,406
HEI ignition and a Motorcraft carb swap if you don't need to wory about an emissions inspection. Do a search. Tons of info on these swaps in the CJ forum. Might also give us a tire size. Many "weak engines" are really gearing problems due to over sized tires.
jeepdaddy2000 is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Power Outlet on 06LJ has no power HELP! 90SaharaJeep Audio, CB & Ham Radios, GPS, & Electrical 8 04-23-2009 06:46 PM
Power Windows and Power Locks? Broadbent Audio, CB & Ham Radios, GPS, & Electrical 6 03-13-2009 07:31 PM
What about winch power in, and power out feature? CB3 General Jeep & Off-Road Equipment 27 06-05-2008 02:29 PM
(amp output) RMS power vs. dynamic power orangez Audio, CB & Ham Radios, GPS, & Electrical 3 07-18-2005 06:21 PM
more power for my 04 4.0L irontj04x Engines & Drivetrain 7 11-28-2004 02:45 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome