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  #1  
Old 01-19-2012, 07:01 PM
89dogwagon 89dogwagon is offline
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Default TF 727 to A 518 (46RH) Trans swap questions

I have a 1989 Dodge Ramcharger, 5.9L (360) TBI, V-8, 4x4, Auto trans (TF-727), NP-241 Transfer case. My transmission is terminally ill, which leaves me with various options…
1) Rebuild the existing
2) Replace with a rebuilt/remanufactured TF-727
3) Replace with a A-518 (46RH) - used, rebuilt or remanufactured
I have been reading a lot about converting to the OD transmissions but all I have been able to find is for cars with vague reference to the ability to do the same for 4x4s. I like the idea of the OD, but question the ease of this update (in the reading I have done the biggest problems are drive shaft length, transmission mount modification and modifying the body to accommodate the larger transmission) none of these is really a problem with the 4x4 except maybe if the relocation of the transfer case is required due to transmission length. The biggest problems, assuming everything bolts in without further changes (see questions) is being able to afford and find a good rebuilt/remanufactured A-518 (46RH). If I make this conversion I will control the OD and TCC as advised by PATC. I understand that I will need a 1990 through 1995 transmission to keep the hydraulic shift controls.

1) Is the torque converter the same from 5.9L (360) and 5.2L (318) in the A518 (46RH) transmissions?
2) Will the torque convertor in the A518 (46RH) bolt to the existing 1989 5.9L (360) without changing any parts?
3) Will the A518 (46RH) transmission bolt to the existing transfer case?
4) Will I have the move the transfer case back or forward due to different length in transmissions?
5) Will the existing starter bolt to the A518 (46RH) transmission?
6) Will the existing shift linkage work?
7) Will the existing throttle linkage work?
8) Will the existing speedometer connection work?
Not sure which why I am wanting to go, some will depend on the answers to these questions and the advice I get, the rest on the cost of each option.
Thanks for the answers and advice.
Jim
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  #2  
Old 01-19-2012, 07:39 PM
Gen1dak Gen1dak is offline
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Default

5, 6, 7 ,8.... yes.
3 and 4....not something I have dealt with.
2....yes....provisionally.... There's a difference in balance weight between the 360LA and 360 Magnum so it depends on the donor. This can be handled with a weight swap if needed.
1....Yes. Sometimes there's a slight difference in stall speed. Nothing to be an issue. Remember that the 5.2 is a zero balance engine, the 5.9 has weight on the converter.
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Old 05-24-2013, 01:32 PM
eckoview05 eckoview05 is offline
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Default

Were you able to complete the swap? How did it work out? I am looking into doing the same thing with my 85 W350. What kinds of problems did you run into?
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Old 02-25-2014, 06:48 AM
willywilly willywilly is offline
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Default just go for it...

You'll never have all of those questions answered...get the basic physical dimensions confirmed, answer the general electronics interface issues, and then jack the truck up and get started. Good luck
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  #5  
Old 08-04-2014, 06:54 PM
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DodgeAddict DodgeAddict is offline
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It's not that hard to do
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