600cfm Edelbrock on 258 6 cyl. - JeepForum.com
LinkBack Thread Tools
post #1 of 4 Old 06-13-2002, 08:35 PM Thread Starter
Registered User
Join Date: Jun 2002
Location: Texas
Posts: 2
600cfm Edelbrock on 258 6 cyl.

My son is looking at buying an '88 Wrangler with a 258 6 cyl.. One of the previous owners put a Clifford intake manifold, headers and what seems to me to be overkill for carburetion, an Edelbrock 600cfm, manual choke, 4 barrel. From what I can find on the net, a 390 4 barrel is the largest recommended carb for this manifold/engine size. Any comments/thoughts are appreciated.

Trailryder42 is offline  
Sponsored Links
post #2 of 4 Old 06-13-2002, 08:57 PM
Bob K
Registered User
Bob K's Avatar
Join Date: Nov 2001
Location: New Bedford, MA
Posts: 987
I don't have experience with that large a carb on a Jeep. But it doesn't sound like a good idea for all the obvious resons. Assuming the motor is stock. I can remember that a Holley 650 was a good size carb for a high performance engine in the 350 cubic inch range.

'87 Wrangler YJ 4.2 I6 (sorry, sold)
JuiceBox ignition
2 1/2" ProComp Lift
31" BFG A/T's
K&N Filter
Custom Rock Guards
Turbo Muffler
Rear Track Bar in the shed
Other Tricks I won't tell to just anybody!

'99 Grand Cherokee 4.7 V8
Towing Package
ProComp MX6 shocks
Borla Exhaust
Tow Hooks
Alpine CD with Infinity+iPod connect
Just getting started!

If you're not living on the edge...
you're taking up too much space.
Bob K is offline  
post #3 of 4 Old 06-14-2002, 09:45 AM
Registered User
4wheeler4CJ's Avatar
Join Date: Mar 2002
Location: Southern Rhode Island
Posts: 1,527
I ran a mildly "Clifford" modified 258 in my last CJ for 6 years, with the saem setup, including the intake, 390 carb, dual exhaust headers, cam, etc.

The 390 is ABSOLUTELY the largest you should use, 600 is absolutely ridiculous on a 258. Even with the 390, I ran rich sometimes until I got on it.
4wheeler4CJ is offline  
post #4 of 4 Old 06-14-2002, 02:13 PM Thread Starter
Registered User
Join Date: Jun 2002
Location: Texas
Posts: 2
Thanks guys for those thoughts. That's pretty much what I figured. Something else I thought of about it. I bet it would need adjusting, jets-wise and retuned if he ever took it to altitude.
Trailryder42 is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com 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
Edelbrock shocks opinions VACJ5 General Jeep & Off-Road Equipment 6 04-30-2009 10:56 PM
Edelbrock shocks? wrecks30 Tires & Wheels 1 04-15-2007 12:08 PM
edelbrock amc torker on a 304???? jlutsey Engines & Drivetrain 4 01-25-2007 09:59 PM
Need input on Edelbrock Xtreme IAS ... dspmans_04_X Tires & Wheels 4 08-25-2006 09:41 PM
Edelbrock Shocks Porndexter Tires & Wheels 9 06-30-2006 05:21 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