4.0 jeep 2wd trans useable in javelin?

i was searching thru the available trans information to switch from a 3 speed to a 4 speed overdrive.
( very hard to do thru google,it doesnt post many search results. )

i read thoroughly the 700r4 the 200r4 and also the conversions from auto to stick.
all of them parts/pieces for the auto cost a lot of money,and i understand why yall converted to 5 speeds/and 6 speeds!

one of the things i noticed over on the jeep forum was people were converting 2wd jeeps into 4wds.
now,they state the transmission/42re? rfe? off the 2wd 4.0 motor jeeps
will bolt up to a amc v8 motor.
if this is true,can they be used in a javelin too?

has anyone looked into this?
when i ebayed the trans,the pictures suggest<<<< that its a 727 case/with the overdrive/aka the old 500 trans,albeit Much more compact than the old 500 was.
the old 500,you could use a toggle switch for overdrive as well.....
it looks like it would fit the trans tunnel?

any advice would be helpful.
the car is a 304 auto.
my original trans is a light duty/alum housing/no reverse and no parts to be found for rebuild?
plus im installing an 8-3/4 dodge rearend with 3:91 gearset.

yes Sir,i did.
forgot to mention that as well.
was looking at this other trans as an option tho.
did note that he said he recced 3:55 gears instead of 3:91

http://amccars.net/cgi/yabb2/YaBB.pl?num=1358534711

Earlier 42RH's have governors so if you stay pre 96, you'll be fine. I looked into this a lot but I'm 99% sure this won't fit into a Javelin without modifying the tunnel - which I didn't feel like doing so I dropped it. I determined this from measuring and it wasn't super accurate. I would of mocked it up if I had the opportunity but I didn't. IMO, it's the easiest way and a heck of a lot cheaper.

oky,im further along and a bit confused as well.
which trans has a governor and doesnt need to be modified?
governor as in shifting/kickdown?

Kens post says we need to swap cases and innards,Mopar guy says we dont?
pretty much looking for the easy cheap way out here.
was thinking could use the whole trans as is from the jeep 2wd?
which brings to mind the question of torque convertors as well.
is the 4.0 a neutral balance? is the 304?

Traveller,the trans combo you have there,whats it going in and more specifically,whats the Dimensions on that trans perchance??
width/height length etc.
what kind of lootage did you guys spend on this conversion?

Mopar guy,yeah,im kinda on the fence there,the car is a plain jane,not worth a whole lot but yet the body is in vgc.
it would be a bit tough at first cutting it.
cept the quarters,we wont talk about the quarters.


Edited by amcFever - Apr/24/2014 at 3:47pm