CJ7 motor swap to a 350. - 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 > CJ7 motor swap to a 350.

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineNEW JK WRANGLER GRAB BARS NOW at ROCKRIDGE4WDSPARTAN LOCKERS are on sale BIG TIME at ROCKRIDGE 4WD!

Reply
Unread 07-25-2006, 09:56 AM   #1
86cj7laredo
Registered User
 
Join Date: Jul 2006
Location: NC
Posts: 4
CJ7 motor swap to a 350.

Ok, I have a 258 I6 that is worn out. I am thinking of doing a swap to a 350. I found a great deal on an LT1 350 motor. What I would like to know is how difficult the swap is. What parts will I need to do the swap. Keep in mind that I want to keep the fuel injection on the motor. Is there any prep work I can do with the 258 still in the jeep to make the swap go easier. Is it worth swapping to the 350 or should I stick with the 258? All opinions and suggestions are welcome. Thank you in advance for your time.

86cj7laredo is offline   Reply With Quote Quick reply to this message
Unread 07-25-2006, 10:40 AM   #2
fuzz401
Registered User
1978 CJ7 
 
Join Date: Jan 2003
Location: Lancaster, Pa.
Posts: 1,757
not much you can do with the motor in

you will need a motor mount set up -- adapters for the motor to tranny -- might need new driveshafts or mod them
__________________
1978 cj-7 had since 1979
401 .030 over- full floating flat top pistons
crower solid cam 292 dur .500/.510 lift
turbo 400 tranny 2500 stall
model 20 transfer case
aj delux glass body
4" lift
dana 30 frount
dana 44 rear
4.56 gears
http://img2.photobucket.com/albums/v...slideshow=true
http://photobucket.com/albums/v31/fu...slideshow=true
13.461 @ 92.45 mph on 37" super swampers on 1/4 mile
fuzz401 is offline   Reply With Quote Quick reply to this message
Unread 07-25-2006, 11:19 AM   #3
BESRK
GROUND POUNDER
 
BESRK's Avatar
1980 CJ5 
 
Join Date: Nov 2002
Location: Newport News, VA
Posts: 12,274
A few things that quickly come to mind...

> Engine Mounts
>Maybe new tranny mount
>Adapter to mate engine/tranny
>Maybe a new tranny to handle stronger motor
>Conversion Radiator
>Conversion Headers or manifolds
>New exhaust
>New hoses
>New fuel lines to handle injection
>Fuel Pump matched to injection system
>Wiring Harness (either complete, splice in or do your own)
>Different driveshafts
>Maybe stronger axles
>Nuts and Bolts


.. that should get you started.
__________________
'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..

Ground Pounder Fab


Lower 2

Guardrail

Down Schoolbus

Slickrock Tellico

Save

Crozet

More Crozet
BESRK is offline   Reply With Quote Quick reply to this message
Unread 07-25-2006, 11:51 AM   #4
dblakley
Registered User
1986 CJ7 
 
Join Date: Jun 2006
Location: michigan
Posts: 45
get a 700r4 tranny it will bolt up to the 350 and a dana 300 you will also need the wireing harness and computer from the doner vehicle .
dblakley is offline   Reply With Quote Quick reply to this message
Unread 07-25-2006, 12:03 PM   #5
Scrambler82
Registered User
1982 CJ8 
 
Join Date: Jun 2002
Location: Boston Area
Posts: 3,594


Change the cam also, it is setup for RPMs and you will need low end torque for the trails.
__________________
Scrambler82

Do it right the first time !
Scrambler82 is offline   Reply With Quote Quick reply to this message
Unread 07-25-2006, 12:12 PM   #6
jeepskate
Web Wheeler
1986 CJ7 
 
Join Date: Aug 2004
Posts: 4,700
Do some searching & reading, get the swap manual from Advance Adapters. People have been swapping 350's into CJ's for *decades* so there's plenty of info out there. The LT1 is a little more complicated from a wiring standpoint but there are enough resources out there since 350 swaps into just about anything are pretty common that you can easily find places that'll setup your harness for you, burn custom ROM's, etc.
__________________
'86 CJ-7 Laredo: 4.2,T-999,D300,D30/D44,'94 YJ tub, full cage, Shrockworks rockers, OYR corners, AC,cruise,restored seats,3 tops,2.5" Superlift,F-T shackle reversal, RS9000x's,35" Dunlop Mud Rovers.
'83 Scrambler: time & money pit under construction with parts from CJ's,YJ's,TJ's,FSJ's,GM,Ford,IH,Honda,Toyota and a whole lotta aftermarket & custom stuff.
http://www.jeepskate.net
jeepskate is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

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.


Thread Tools


Suggested Threads





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.