TheAMCForum.com Homepage
Forum Home Forum Home > The Garage > Transmission & Drivetrain
  New Posts New Posts RSS Feed - 1983 360 swap with 1978 360 whats needed
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

1983 360 swap with 1978 360 whats needed

 Post Reply Post Reply
Author
Message
patbrady View Drop Down
AMC Fan
AMC Fan
Avatar

Joined: Jul/14/2018
Location: Tiffin, Ohio
Status: Offline
Points: 4
Post Options Post Options   Thanks (0) Thanks(0)   Quote patbrady Quote  Post ReplyReply Direct Link To This Post Topic: 1983 360 swap with 1978 360 whats needed
    Posted: Jul/14/2018 at 5:44pm
i'm swapping a 1983 360 with a TF 727 with a 1978 360 with a TH 400 what will I need to do im going to use the Tf 727 this is for a J-10. Thanks
Back to Top
401MATCOUPE View Drop Down
AMC Addicted
AMC Addicted


Joined: May/20/2010
Location: Salisbury, MD
Status: Offline
Points: 5370
Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: Jul/14/2018 at 5:55pm
Engine swap is pretty simple, just use the flex plate for which ever trans you are going to use....you will find one major difference in mounting the accessories.  The heads have a 3/8" NC thread where the top of the alternator mounts when they changed from Motorcraft (1978) to Delco Alternator (1979 Up).  The 1978 engine has a 7/16-14 NC thread .......so you need to do some minor work to remedy.  I swapped a 75 401 in my 79 Grand Wagoneer.....I just drilled the Delco upper hole to accept the 7/16" bolt and used the bolt from the 75 engine......problem solved.  Just FYI the late head also has 5/16-18 NC in the very front and back corner where the older engines have 3/8-16 NC in all 6 positions on each side to attach the exhaust manifolds to the heads.
Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar)
68X,GoPac,390,4sp,52A
69X,GoPac,390,4sp,64A
70X,GoPac,390,4sp,87A,8
70X,GoPac,390,4sp,BBO,8
70 Jav SST,390,AT,BSO
74MatX,401,AT,Prototype
74MatX,401,AT
Back to Top
FSJunkie View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jan/09/2011
Location: Flagstaff, AZ
Status: Offline
Points: 4741
Post Options Post Options   Thanks (0) Thanks(0)   Quote FSJunkie Quote  Post ReplyReply Direct Link To This Post Posted: Jul/14/2018 at 6:30pm
The nose of the crankshaft isn't different for the TH400 verses the TF727, is it? I seem to recall that it might. 
1955 Packard
1966 Marlin
1972 Wagoneer
1973 Ambassador
1977 Hornet
1982 Concord D/L
1984 Eagle Limited
Back to Top
purple72Gremlin View Drop Down
AMC Addicted
AMC Addicted
Avatar
Charter Member

Joined: Jul/01/2007
Location: Illinois
Status: Offline
Points: 16591
Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Jul/14/2018 at 7:42pm
There is a shim in the crankshaft hole where the TH 400 converter hub goes. Im not sure if you can get a new one. Id find a way to remove it from the 78. Then put it in the 83 engine. (It looks like a bushing, and it is a bushing I basically)
Back to Top
PHAT69AMX View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/07/2007
Location: West Virginia
Status: Offline
Points: 5903
Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Jul/14/2018 at 11:59pm
AMC Jeep Part Number 535 2374 may be the Crankshaft Pilot Sleeve "Bushing Ring" for the slightly smaller OD TH 400 Trans Converter Pilot which gets removed if/when a TF 727 Trans is used.
Here is the NOVAK web page about them:

Back to Top
401MATCOUPE View Drop Down
AMC Addicted
AMC Addicted


Joined: May/20/2010
Location: Salisbury, MD
Status: Offline
Points: 5370
Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: Jul/15/2018 at 5:29am
Sorry, forgot about the bushing, it is very thin walled and looks like a cam bearing.   The bushing only needs to be used with the TH400, or removed from the crank of engine previously connected to a TH400......you need no bushing for any engine with TF hooked to it.
Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar)
68X,GoPac,390,4sp,52A
69X,GoPac,390,4sp,64A
70X,GoPac,390,4sp,87A,8
70X,GoPac,390,4sp,BBO,8
70 Jav SST,390,AT,BSO
74MatX,401,AT,Prototype
74MatX,401,AT
Back to Top
PHAT69AMX View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/07/2007
Location: West Virginia
Status: Offline
Points: 5903
Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Jul/15/2018 at 10:40am
So it sounds like op will be installing the '78 360 in his J10 and reusing the existing '83 TF 727.
IF this is correct, the Crankshaft Pilot Ring will need to be removed from the butt end of the crank
and the Flexplates will have to be swapped... And I am unaware of when the Mitsu Starter phased in...
The TF Kickdown Linkage will need fitted to the '78 360...
Hopefully more knowledgeable Jeep folks will chime in with more 1st hand details
Back to Top
purple72Gremlin View Drop Down
AMC Addicted
AMC Addicted
Avatar
Charter Member

Joined: Jul/01/2007
Location: Illinois
Status: Offline
Points: 16591
Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Jul/15/2018 at 1:17pm
Originally posted by PHAT69AMX PHAT69AMX wrote:

So it sounds like op will be installing the '78 360 in his J10 and reusing the existing '83 TF 727.
IF this is correct, the Crankshaft Pilot Ring will need to be removed from the butt end of the crank
and the Flexplates will have to be swapped... And I am unaware of when the Mitsu Starter phased in...
The TF Kickdown Linkage will need fitted to the '78 360...
Hopefully more knowledgeable Jeep folks will chime in with more 1st hand details
the mitsu starter came out in 1987
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.

This page was generated in 0.141 seconds.
All content of this site Copyright © 2018 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or