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post #1 of (permalink) Old 08-20-2000, 11:10 PM
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Tranny Questions...

As some may know Im swapping a 400turbo into my 6, I know that Jeep used the GM version in the early 70's with an adapter ring, I now have one thanks to JeepBob selling me one. But the question that I have is more about the one I took out of the 78' wagoneer that was bolted to the 401 that Im also swapping in. There are what apears to be extra holes for a different application or maybe even three sets this is the strangest tranny face that Ive ever seen, its very round in shape and has alot of holes.

Any ideas on what it is?

Thanks up front,
Jim

I think my mom dropped me on my head too much as a child....lucky for me it was in the mud !!!
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post #2 of (permalink) Old 08-21-2000, 11:54 AM
 
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Re: Tranny Questions...

That very round bolt pattern is the AMC bolt pattern.
It will bolt straight to AMC engines.
You will need to use the steel spacer that is between the engine and transmission.

I'm thinking the I-6 and the V-8 AMC bolt patterns were the same, but I don't work with I-6 engines, so I'm not sure....

All of the internals will interchange with any other TH-400 for the most part.
SO,
The Round bolt pattern TH-400 will bolt up to your AMC engine, with no adaptor.
(Use the steel spacer)
If you have a Chevy TH-400, it will work for parts.
OR,
You can use is bolted straight to a small block chevy engine if you decide to upgrade to a V-8.

CJ-8/5.2Mag can tell you for sure if the bolt patterns are the same.

Warning, that TH-400 eats A LOT of horsepower.
I don't know anybody with an I-6 that uses one.


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post #3 of (permalink) Old 08-21-2000, 12:14 PM
 
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Re: Tranny Questions...

TR

<font color=blue>I'm thinking the I-6 and the V-8 AMC bolt patterns were the same, but I don't work with I-6 engines, so I'm not sure....</font color=blue>

The I-6 and the V-8 AMC motors all use the same bell housing bolt pattern, the I4's and V-6 were diff.
GP'n

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post #4 of (permalink) Old 08-21-2000, 01:42 PM
 
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Re: Tranny Questions...

Looks like that obstacle is cleared!
Thanks for clearing it up.

"I Have The Body Of A God... Buddha"
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post #5 of (permalink) Old 08-21-2000, 10:35 PM
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Re: Tranny Questions...

Im still not sure if I asked it wrong or it wasnt answered. I have a 401 so power is not an issue, what I want to know is A) will the 400 out of the Jeepster fit a GM without the adapter ?
B) what do all of the other bolt holes fit on the tranny that bolts dirrectly to the AMC W/O a Ring ?

Let me know if you can help,
Jim

I think my mom dropped me on my head too much as a child....lucky for me it was in the mud !!!
post #6 of (permalink) Old 08-21-2000, 11:01 PM
 
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Re: Tranny Questions...

Your question was answered.
The AMC bolt pattern TH-400 will bolt up to any normal bolt pattern AMC engine with out an adapter.
Remember to use the factory steel spacer plate (0.040") that comes with the AMC/ TH-400 so your front pump lives.

If it came out from behind an AMC engine, it will go back behind one.

258 I-6, ... 290, 304, 360, 390 and 401 V-8's used the same bolt pattern.

Some of your 'Extra Holes' were used on alignment pins, some of the 'Extra Holes' were for the builder's cradle.
Some of them I have no clue.

We can't help you if you do not know what you have.
Sorry.

"I Have The Body Of A God... Buddha"
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post #7 of (permalink) Old 08-22-2000, 04:38 AM
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Re: Tranny Questions...

[img]/wwwthreads_images/icons/tongue.gif[/img] Our TH-400 has dual bolt patterns, but does not fit the GM family, just our CJ with the AMC family bolt pattern. One thing you may want to take particular note of is to use the maximum bolt in each hole so you don't get the tranny loosening up. Ours was so loose when we got it that I am actually going to stud mount the tranny to the engine to compensate for the washed out holes in the engine block. [img]/wwwthreads_images/icons/smile.gif[/img] Just a note after reading your other post.....[img]/wwwthreads_images/icons/blush.gif[/img].....try not to read anything into these posts that the poster didn't intend to have in there. Sometimes purely technical posts SEEM abrupt, but that is usually unintentional.[img]/wwwthreads_images/icons/tongue.gif[/img] I try to read for content and leave the emotionalism to algore, the democraps, and their "victim mentality" voting base.[img]/wwwthreads_images/icons/frown.gif[/img]

CJDave
Quadra-Tracs modified While-U-Wait by the crack moonguy[img]/wwwthreads_images/icons/wink.gif[/img] Quadra-Trac Team.[img]/wwwthreads_images/icons/tongue.gif[/img][img]/wwwthreads_images/icons/smile.gif[/img]
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post #8 of (permalink) Old 08-22-2000, 07:40 AM
 
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Re: Tranny Questions...

When Jeep contracted with GM for the TH400 ALL the TH400's were manufactured with the Jeep/AMC engine family bolt patterns, you will NOT be able to cross mount either GM or AMC style patterns without a adapter ring. TR was correct about the "extra" holes in the bell housings.
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post #9 of (permalink) Old 08-22-2000, 09:44 AM
 
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Re: Tranny Questions...



I guess yesterday was a Mydol day all the way around....

I though I was pretty clear, and then I though I was really clear.
I didn't put in any commentary because I was doing so many things at once, and everyone was upset...
----------------------------------------------

According to the GM Vintage Parts Guide.....
The TH-400 came in four separate flavors....
1. Chevy 'Corporate' bolt pattern.
2. B-O-P bolt pattern, (Buick, Pontiac, Oldsmobile)
3. Double Drilled, (both Chevy 'Corporate' and B-O-P, they do exist, I've seen them)
4. AMC bolt pattern.

No AMC and something else, just AMC.
--------------------------------------------

There is also a couple of interesting toys in here...
Did you know there was a Chevy case made with a PTO port?
Says industrial only... Wonder what they came out in...?
--------------------------------------------

Oh well, you can't please all of the people all of the time!
Such is life....
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