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Unread 01-03-2010, 04:30 PM   #1
straycatboat
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GM V8 swap to jeeps 42RLE transmission

Can this be done with an adapter plate?
I would like to keep the Jeep trans if possible ... Cost reason
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Unread 01-03-2010, 05:03 PM   #2
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Don't think so, but you can contact Novak and Advanced Adapters and ask.
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Unread 01-03-2010, 05:35 PM   #3
ryan2022
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Originally Posted by BlueFlame View Post
Don't think so, but you can contact Novak and Advanced Adapters and ask.
that would be interesting......LS1!!
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Unread 01-03-2010, 05:43 PM   #4
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That's a terrible idea... the 42RLE isn't meant to hold tons of torque/power.

The 4 = 4 speed

2 = 2 out of 10 torque rating

R = rear wheel drive

E = electronically shifted(not sure if there is a designation for the L honestly)


FWIW The Dodge Rams and Jeep Grand Cherokees that had the 5.2L V8 and 5.9L in some cases had the stronger 46RH or 46RE. Depending on year one was hydraulically shifted and the other was electronically shifted.


If you're going to bother swapping in an LS1 don't half-*** it and try to keep the weak transmission. Best off just getting a 700R4 or a 4L60E(electronic version of the 700R4) if you can get it with the motor. You could get an adapter for the 700R4 to run the Jeep 231 then pretty easily... I haven't looked into it too much but I think in some applications it might just hook straight up.

Either way trans/t-case adapters are cheaper than bellhousing adapters.
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Unread 01-03-2010, 05:56 PM   #5
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I'm not too sure that the number two stands for a torque rating. I wouldn't be surprised if it could put up with the torque...

I have a 42RLE from 2003 and despite the fact that it shifts like ***, gets confused when to down shift and I would love to replace it with a manual, I cannot get the thing to fail after 150000 miles, 2 serious overheating events on the trail and yearly relentless abuse on the MI sand dunes every year.
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Unread 01-03-2010, 06:06 PM   #6
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I'm not too sure that the number two stands for a torque rating. I wouldn't be surprised if it could put up with the torque...

I have a 42RLE from 2003 and despite the fact that it shifts like ***, gets confused when to down shift and I would love to replace it with a manual, I cannot get the thing to fail after 150000 miles, 2 serious overheating events on the trail and yearly relentless abuse on the MI sand dunes every year.
That is indeed how Chrysler rates their auto transmissions.

The legendary torqueflite automatic transmission

The 42RE and the 46RH/46RE are all based on the same 727 transmission, except they all have an overdrive.

I'll be honest that I can't say what it is that makes the 46RH that much stronger than a 42RE, but that is how Chrysler rates their transmissions now.
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Unread 01-03-2010, 06:14 PM   #7
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a 42RLE wouldn't hold up behind a LS1 caliber V8. the 42RLE a crap transmission to begin with, save your money and use a better transmission.
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Unread 01-03-2010, 06:47 PM   #8
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Originally Posted by flatlander757 View Post
That is indeed how Chrysler rates their auto transmissions.

The legendary torqueflite automatic transmission

The 42RE and the 46RH/46RE are all based on the same 727 transmission, except they all have an overdrive.

I'll be honest that I can't say what it is that makes the 46RH that much stronger than a 42RE, but that is how Chrysler rates their transmissions now.
The 42RLE is not the same as the 42RE trans.The TJ get's the 42RLE trans(auto).The 42RLE is a upgraded version of the old A604 transmissions used in the 1st Caravan's.

And yes the torque rating for the 42RLE is 2 out of 10.
Quote:
Recent Chrylser automatics usually have the basic format (Number of gears) (torque rating) (Transverse or Longitudinal) E(lectronic) so 41TE is a 4-speed, low-torque-capability, transverse-engine type transmission, while 62TE would be a six forward gears, higher capacity transmission for transverse mounted engines.
The 42RLE is weaker then the 45RFE/545RFE.
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Unread 01-25-2010, 09:24 AM   #9
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So for those of us with the 42rle that want to add more power to our motors, lets say a supercharger or a stroker, what are our options for a transmission that will take more abuse?

Will anything bolt up without adapters?
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Unread 01-25-2010, 09:28 AM   #10
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Originally Posted by LOCKED UP View Post
So for those of us with the 42rle that want to add more power to our motors, lets say a supercharger or a stroker, what are our options for a transmission that will take more abuse?

Will anything bolt up without adapters?
you can swap in an NV3550, or even an AW4...lots of work involved (manual trans PCM, lots of wiring, pedals, etc).

or you can rebuild the 42RLE with the TransGo shift kit, and a big cooler...and pray.
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Unread 01-25-2010, 09:31 AM   #11
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you can swap in an NV3550, or even an AW4...lots of work involved (manual trans PCM, lots of wiring, pedals, etc).

or you can rebuild the 42RLE with the TransGo shift kit, and a big cooler...and pray.
Why pedals?


Seems like after I'd spend the money to install a supercharger ~5k, then source an NV3550 or an aw4 (which isn't that great anyway) a PCM and do wiring ... I may as well throw in a 5.9 ....
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Unread 01-25-2010, 09:38 AM   #12
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Quote:
Originally Posted by LOCKED UP View Post
Why pedals?


Seems like after I'd spend the money to install a supercharger ~5k, then source an NV3550 or an aw4 (which isn't that great anyway) a PCM and do wiring ... I may as well throw in a 5.9 ....
brake & clutch pedals for manual (if you went NV3550)

and bingo...5.9L + 46RE + NV241J =
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Unread 01-25-2010, 09:50 AM   #13
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So a local place is quoting me this for turn key just so I could have some figures....

5.9 & tranny swap - ~8k

Ripp Mods Super Charger ~5k

then when you factor in I can sell my motor & trans for hopefully 1K that drop the v8 swap to 7k.

And when you figure I need to add a new PCM & wiring for an aw4, plus the aw4 ... that goes up to about 6500.

So I'm thinking that for a difference of $500 I may as well do a 5.9 because really an Aw4 isn't anything so great to begin with.



Will a 241j bolt up to a 46re?
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Unread 01-25-2010, 10:04 AM   #14
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Here is a link to 5.7 - LT-1 install ... he keep the small axles, which is not that good, it is a nice looking job though ...

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Unread 01-25-2010, 10:10 AM   #15
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Will a 241j bolt up to a 46re?
I have no idea...but i believe the V8 ZJ guys do NP231 swaps, so if a NP231 will bolt up, a NV241J will. I think the ZJ's used longer input shafts on the NP231, so there is some shaft swap that needs to happen. Also, Dodge 2500's came with varying NV241's models with a long output shaft. I'm sure theres a 5.9L/46RH or 46RE + NV241/NV231 combo somehow. I don't know much about Dodge pickups...

So there's got to be a way to do it.

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