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  #1  
Old 12-23-2009, 12:22 PM
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Knuck Knuck is offline
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401 Swap into an 81 J20

Anything special needed for this swap. The truck already has a 360/t18/np208 setup. I know about the 401 flywheel and have that covered. The rest should just be remove/replace correct? The 401 came out of a 75 waggy.
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
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  #2  
Old 12-23-2009, 01:06 PM
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fulsizjeep fulsizjeep is offline
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I don't know how this affects a T18 install like it does a 727, but if the 401 was mated to a T400, there is the adapter ring/bushing in the back end of the crank shaft that you may need to remove.

It is mentioned here:
http://cfsja.org/tech/drivetrain/401/401.html
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Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s with a few Evil Twin & TT's Fabworks mods
76 401 Wag, 77 401 Wag, 77 401 J20
http://eviltwinfab.com http://www.ttsfabworks.com
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  #3  
Old 12-23-2009, 01:09 PM
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Knuck Knuck is offline
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The 401 was originally mated to a slushbox. Not sure whether it was a th400 or a 727 though.
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
Status: Up and running
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  #4  
Old 12-23-2009, 01:12 PM
Ristow Ristow is offline
 
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you'll be putting a pilot bearing in the crank for the T18.
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... like the little 'you know what's' that you are.




Quote:
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I LOVE how Ristow has stolen my comment about him ... "Quoted" it ... and made himself famous for being an ***hole to people. Hahahahahahahahahha!


→ Where the kids hang out...

fsjbuilder.org come for the mindless chat,stay for the hand drawn emoticons.

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  #5  
Old 12-23-2009, 01:16 PM
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fulsizjeep fulsizjeep is offline
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Quote:
Originally Posted by Knuck
The 401 was originally mated to a slushbox. Not sure whether it was a th400 or a 727 though.
Oh yeah, 75 Wag, it was a T400.

There ya go Mike, I thought there was something to that...
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Flint
Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s with a few Evil Twin & TT's Fabworks mods
76 401 Wag, 77 401 Wag, 77 401 J20
http://eviltwinfab.com http://www.ttsfabworks.com
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  #6  
Old 12-23-2009, 01:18 PM
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Knuck Knuck is offline
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Is it a bearing or a bushing? Should I be able to pick this up easily at a local parts store?
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
Status: Up and running
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  #7  
Old 12-23-2009, 01:23 PM
Ristow Ristow is offline
 
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can be either. yes,readily available.
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Originally Posted by Hankrod
Ristows right.................again,




Quote:
Originally Posted by Fasts79Chief
... like the little 'you know what's' that you are.




Quote:
Originally Posted by Fasts79Chief
I LOVE how Ristow has stolen my comment about him ... "Quoted" it ... and made himself famous for being an ***hole to people. Hahahahahahahahahha!


→ Where the kids hang out...

fsjbuilder.org come for the mindless chat,stay for the hand drawn emoticons.

It's like you're unraveling a big cable-knit sweater that someone keeps knitting...and knitting...and knitting...and knitting...
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  #8  
Old 12-23-2009, 01:29 PM
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Knuck Knuck is offline
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Sweet!! Thanks. Any other stuff I am gonna need outside of the normal stuff?
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
Status: Up and running
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  #9  
Old 12-23-2009, 01:32 PM
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fulsizjeep fulsizjeep is offline
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Isn't that more like a bushing? I don't see bearings on 2 quick searches...

NAPA:
http://napaonline.com/Search/Detail.aspx?A=BK_6151133_0074680951&An=599001+1019 81+50038+2038014

O'Reilly:
http://www.oreillyauto.com/site/c/detail/BCA0/PB79.oap?year=1981&make=Jeep&model=J10&vi=1183306& keyword=pilot+bearing&partType=01341&parentPartTyp e=C0015
__________________
Flint
Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s with a few Evil Twin & TT's Fabworks mods
76 401 Wag, 77 401 Wag, 77 401 J20
http://eviltwinfab.com http://www.ttsfabworks.com
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  #10  
Old 12-23-2009, 01:53 PM
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brad_fsj10 brad_fsj10 is offline
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Replacing the 360 with a 401 is illegal in all states west of the Mississippi - further, if you're caught in the process of doing the swap they can take your jeep and your house....

Being the kind soul that I am I will offer to take the engine off of your hands without charge... really...

Heh, no really, other than the things mentioned, maybe a 12-pack of your favorite frosties. Haver fun while you're droppin' it in.
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79 J20
360/NV4500
D44/D60/3.31s
past rigs -
86 J10
80 J10
79 Chief
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  #11  
Old 12-23-2009, 01:57 PM
Ristow Ristow is offline
 
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Quote:
Originally Posted by fulsizjeep
Isn't that more like a bushing? I don't see bearings on 2 quick searches...


usually is,but some use a bearing,can be either. if you get handed a sealed bearing don't automatically think it's wrong. dunno if AMC/Jeep ever used the bearing.
__________________
Quote:
Originally Posted by Hankrod
Ristows right.................again,




Quote:
Originally Posted by Fasts79Chief
... like the little 'you know what's' that you are.




Quote:
Originally Posted by Fasts79Chief
I LOVE how Ristow has stolen my comment about him ... "Quoted" it ... and made himself famous for being an ***hole to people. Hahahahahahahahahha!


→ Where the kids hang out...

fsjbuilder.org come for the mindless chat,stay for the hand drawn emoticons.

It's like you're unraveling a big cable-knit sweater that someone keeps knitting...and knitting...and knitting...and knitting...
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  #12  
Old 12-23-2009, 02:09 PM
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Knuck Knuck is offline
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Am I correct in assuming it a pressed fit?
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
Status: Up and running
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  #13  
Old 12-23-2009, 02:24 PM
Ristow Ristow is offline
 
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it is. not terribly tight.
__________________
Quote:
Originally Posted by Hankrod
Ristows right.................again,




Quote:
Originally Posted by Fasts79Chief
... like the little 'you know what's' that you are.




Quote:
Originally Posted by Fasts79Chief
I LOVE how Ristow has stolen my comment about him ... "Quoted" it ... and made himself famous for being an ***hole to people. Hahahahahahahahahha!


→ Where the kids hang out...

fsjbuilder.org come for the mindless chat,stay for the hand drawn emoticons.

It's like you're unraveling a big cable-knit sweater that someone keeps knitting...and knitting...and knitting...and knitting...
Reply With Quote
  #14  
Old 12-23-2009, 02:29 PM
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Knuck Knuck is offline
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Good deal. I will have the machine shop install one while the engine is there.
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
Status: Up and running
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  #15  
Old 12-23-2009, 02:33 PM
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mdill mdill is offline
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Have a 7/16" drill handy, and hopefuly you have the hardware from the 401, most the acessory bolts on the 401 will be 7/16" vs. 3/8" on your 360 so you will have to do some work there, not a biggy but PITA if you don't plan for it. The exhaust manifold bolts will be 3/8" for all on the 401, where the 360 will have 5/16" bolts on the front and back holes, and 3/8" on the centers.


Mike D.
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  #16  
Old 12-23-2009, 02:44 PM
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Knuck Knuck is offline
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The 401 I picked up had all the accessories on it, so I should be set there. That does remind me though. The SS bolt setup I ordered from BJs will need to be exchanged.
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
Status: Up and running
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  #17  
Old 12-23-2009, 02:53 PM
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FiveQuarterKaiser FiveQuarterKaiser is offline
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Sounds like a great swap. I'd love to see any photos of the process.

I had to remove the bushing from the crank when I put a 4.0 in my CJ7 (had to go smaller for the tranny I was using) and that was NOT fun.

Kent

Before:


After:


If there is one in there that need to come out I would definitly have them do it. Sometimes if you are just replacing the bearing with the same size you can pop it out by packing it with grease and smacking a dowel through the middle to eject it. I had no such luck with the bushing.

Keep us posted on the swap.

Kent
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  #18  
Old 12-23-2009, 02:57 PM
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Knuck Knuck is offline
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Since the 401 had an auto mated to it, there is no bushing/bearing there now.
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81 J20 "Mater", 401/T-18/NP208, Rhino Conversion, 4" Rusty's all-spring lift, extended length front shackles, 2" rear blocks. LT285/70r-16 M.T. Baja Claws, Front Locker, Custom Rear Bumper, Custom Front Bumper under construction.
Status: Up and running
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  #19  
Old 12-23-2009, 03:04 PM
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fulsizjeep fulsizjeep is offline
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If it was in a 75 Wag, it should have had that "ring" in there but after 35 years, who knows...
__________________
Flint
Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s with a few Evil Twin & TT's Fabworks mods
76 401 Wag, 77 401 Wag, 77 401 J20
http://eviltwinfab.com http://www.ttsfabworks.com
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  #20  
Old 12-23-2009, 03:07 PM
Ristow Ristow is offline
 
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Quote:
Originally Posted by fulsizjeep
If it was in a 75 Wag, it should have had that "ring" in there but after 35 years, who knows...


correct. it is s'posed to have a thin bushing in there,to make up for the smaller hub of a T400 converter. it will resemble a cam bearing pressed in there.
__________________
Quote:
Originally Posted by Hankrod
Ristows right.................again,




Quote:
Originally Posted by Fasts79Chief
... like the little 'you know what's' that you are.




Quote:
Originally Posted by Fasts79Chief
I LOVE how Ristow has stolen my comment about him ... "Quoted" it ... and made himself famous for being an ***hole to people. Hahahahahahahahahha!


→ Where the kids hang out...

fsjbuilder.org come for the mindless chat,stay for the hand drawn emoticons.

It's like you're unraveling a big cable-knit sweater that someone keeps knitting...and knitting...and knitting...and knitting...
Reply With Quote
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