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Dakota Performance
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1992Dak
Dodge Dakota
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3/16/2005
23:49:49

Subject: Just another 3.9 to 5.2 swap thread
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I'm still trying to get some questions answered on a 3.9 to 5.2 swap in a 1992 Dakota with an auto trans. Not really interested in a 5.9. The 5.2 with light mods will be enough.

I've found out that I need...

5.2 liter from 92-present (Magnum)
Intake/Exhaust Manifold from 92-95 (EGR)
V8 PCM from 92-95 (OBDI one plug ECU)
V8 wiring harness from 92-95 (OBDI)
V8 Flexplate (Crank Position Sensor)
Longer Heater Hoses (longer block)
Fan Shroud from V8 or Electric Fans
V8 Radiator strongly recommended

Other questions...

1) Some people say the A500 currently mated to the 3.9 will be fine with the 5.2. Others say I need to swap it. I need advice on this. I know the 318 mounts to tranny bellhousing, but I need to know if the A500 will be able to handle a little abuse. I'm not going to be taking it to the track every week, but I'm obviously not swapping in a V8 to drive like a granny.

I can't find info on the Dodge transmissions for anything. I know that the hydraulic controlled transmissions ended with an (H). 42RH, 44RH, 46RH. And electronic transmissions ended with (E). This supposedly changed in 1996 with the OBDII, I assume. Which one is the A500, A518, and the last one? Which tranny came with the 5.2 liter in the 92 Dakota?

2) Will all of the sensors off of a 3.9 work with a 5.2?

Thanks for the help in advance. I know V8 swap questions are getting old, but if we get them all answered, we can setup a sticky to make it easier on others. I have plenty of bandwith to setup a page on my site, too.





1992Dak
Dodge Dakota
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3/17/2005
02:54:28

RE: Just another 3.9 to 5.2 swap thread
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Well...I found this...

Here is some useful info on the numbering system for Chrysler trannys.
Auto Trans code breaks down like this:
This particular for the 46RH.

4 = 4 forward speeds
6 = strength of trans. (1-9, higher number, stronger trans.)
R = Rear wheel drive
H = Hydraulic controlled, E = Electronic controlled shift

And if you want gear ratios and such--

Automatic, 4-Speed Overdrive Gear Ratios 1994-1997 models

Transmission
42RH 46RH (A518) 47RH (A618)

1st Gear 2.74 2.45 2.45
2nd Gear 1.54 1.45 1.45
3rd Gear 1.00 1.00 1.00
4th Gear 0.69 0.69 0.69
R Gear 2.21 2.21 2.21

Torque Converter
Diameter 273 mm(10.75 in.) 273 mm (10.75 in.) 310 mm (12.2 in.)

Input Torque
Rating (ft-lb)
NA NA 450

GCVW (lb) 7,800 14,000 19,000



janesy
Dodge Dakota
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3/17/2005
15:46:28

RE: Just another 3.9 to 5.2 swap thread
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Where are you located, save some hassle and just buy my 318.



1992Dak
Dodge Dakota
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3/17/2005
21:08:47

RE: Just another 3.9 to 5.2 swap thread
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Houston, TX.

Give me some more info and I may be interested.

Does it come with a tranny?



gen1dak
Dodge Dakota
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3/17/2005
22:21:56

RE: Just another 3.9 to 5.2 swap thread
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All the V6 sensors will work on the 318.
The 1989 Shelby shipped with 318 and the A500. Most of the failures were due to the same issues Dodge never bothered to fix in any version of their OD trannies. Want it to live? Get a TransGo kit in it, and run a healthy tranny auxilliary cooler. The A500 was intended, in production trim, to handle no more than 400ft/lbs torque. It'll handle the 318. If you were drag racing seriously on the track, or doing heavy towing, I'd suggest some of the newer strengthened parts (5-pinion planetaries, etc), or swapping to the larger A518, but for street duty, no problem. Just get the kit, keep the tranny cool, and run a good synthetic tranny fluid....like something from Royal Purple or Redline.



gen1dak
Dodge Dakota
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3/17/2005
22:31:26

RE: Just another 3.9 to 5.2 swap thread
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Oh, the A500 was re-designated 40RH, 42RH, and later 42RE, also the 44RH. The A500 is essentially an overdrive-equipped A904 Torqueflite. A904's are built to run 9-second 426 Hemi Super Stockers, so the HD parts are there, but the cost and effort makes the 518 an easy choice when necessary.
A518 is 46RH/RE. This is an overdrive version of the 727 Torqueflite.




janesy
Dodge Dakota
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3/18/2005
07:54:59

RE: Just another 3.9 to 5.2 swap thread
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'93 318 R/T cam, stock heads cut to 1.97intake, beer barrel and stock TB. Full B/b and hypereutectic flat tops. Dynoed at 214rwhp, and 283rwtq. Needs an M1 to get the horsies up. It's got 12000km on it give or take. Thats around 10k miles. comes with 93 manifolds.

If you're seriously interested janesy01@hotmail.com







janesy
Dodge Dakota
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3/18/2005
07:58:07

RE: Just another 3.9 to 5.2 swap thread
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oh, I'm in Toronto ON. No tranny



george
Dodge Dakota
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8/14/2009
07:31:19

RE: Just another 3.9 to 5.2 swap thread
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I'm swapping my 4.7 litre for a 5.7 Hemi and 5 speed trany.It's going in a 2001 Dakota Quad cab.Anyone have info on this? I'll be starting next week.



ToddHater
Dodge Dakota
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8/14/2009
22:10:33

RE: Just another 3.9 to 5.2 swap thread
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Todd Bouton is a SH!T B@G



65alive
Dodge Dakota
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10/05/2009
11:02:17

RE: Just another 3.9 to 5.2 swap thread
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Swapped a 5.7/5 speed into my '93. I'm running 295-60-16's out back, and, with no posi will smoke the daylights out of one wheel on any surface. I shredded my driveshaft last month, so she's down while I'm working on a posi 9.25 rear before having a new rear shaft built. Just for info, I scaled my 1st gen at 3740lbs (hemi installed)without me in it, 2nd gens should be heavier, the 5 speed auto has a lower 1st gear (3:1) than the 44/46 series, so you scrounge some extra power there also.

On the 5.2 swap, I had a donor truck when I upgraded to the 5.2, and everything bolted right up 46RH trans, exhaust, mounts, all like stock. The 44RH driveshaft even fit the 46 trans. Good luck with the swap!



super bee
GenI
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10/06/2009
03:10:26

RE: Just another 3.9 to 5.2 swap thread
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hah, they pushed the 47RE to the MAX for tq
the last diesel offered with the 47RE was rated at 460 tq
thats what my brothers 03 is

1990 sport RC SB, 1995 318drivetrain, 3.92 gears (came with truck) Powertrax "traction system", 95 dash/steering wheel, hearthrob exhaust, headers, cutout after y-pipe, necessary electric fan add-a-leafs, 30x9.5 mud tires, cranked T-bars, AR 39 15x8 rims, grill guard, roll bars

   P 1


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