Chevy 305 in my YJ??? -
LinkBack Thread Tools
post #1 of 3 Old 01-27-2004, 09:22 PM Thread Starter
Registered User
Join Date: Jul 2003
Posts: 49
Chevy 305 in my YJ???

Hey right now i have a 2.5l 4cyl in my the 305 a good engine to use for off roading?..this is also my daily driver to tho so do you think this would be a good swap?

Parabola is offline  
Sponsored Links
post #2 of 3 Old 01-30-2004, 12:17 AM
Registered User
Join Date: Jan 2004
Location: Bavaria/Germany
Posts: 13
I had a chevy 307 (maybe the same as your engine?) with a AX 15 Gearbox in my YJ.
It wasnīt that bad even for offroading though you have to modify at least your cooling system and your tranny.
I was running the original cooler from the 258 and it was way too small. Second problem ist your gearbox. If you have an 4 zyl. your Jeep is running the AX5 and donīt think it can stand the torque of an V8.
Think about changing these parts and you can have a lot of fun.


YJ ī87 ...planned: Chevy 350, TH 400, Dana 300 twinstick 4:1
...more to come...
MarcusV8 is offline  
post #3 of 3 Old 02-08-2004, 02:10 AM
Registered User
Join Date: Feb 2004
Posts: 13
The problem with the 305 (if i remember my chevy engines correctly) is that it is like the chrysler 318 in that it has an undersized bore (below 4 inches) the auto manufactures back in the 60's discovered that the "magic" bore size was a little over 4 inches (4.08 if i remember correctly). its not all that much if a problem if you wanted to leave the internals stock being the only pistons out for it are mostlikely stockers. you can modify a 305 but whatever works good on a 305 works great on a 350. and like marcus brought up. with a V8 you will want to swap the transmissions to either a th350 or even a rock crusher. another transmission that would be an interesting setup in a jeep would be a ford AOD. the AOD is a great transmission and can handle the abuse of a chevy 305 (or a 350 if you decide to go that route). the obvious question is how would you get a ford transmisson to bolt to a mouse motor. simple advanced adapters (i think thats the name) has a kit out for it. i even helpes one of my professors install a built up ford AOD into his corvette with a 502 rat pushin about 600 HP but we strengthened it up a little with kevlar cutches and bands, 3000 stall converter and a shift kit.
VileDaRKNiGHT 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
chevy 350 jeepin1270 Engines & Drivetrain 4 02-01-2008 08:42 PM
chevy 350 and 36''s grandman97 General Jeep & Off-Road Equipment 8 12-23-2005 01:13 PM
AX-15 to Chevy V-8 90wrangler Engines & Drivetrain 2 01-17-2005 01:34 AM
Chevy V-8 jeepthing2000 Engines & Drivetrain 5 06-04-2003 05:02 AM
chevy 350 in a cj7 80cj7 Engines & Drivetrain 1 01-16-2003 01:05 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