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phat4x4
Dodge Dakota
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1/31/2002
17:20:04
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 Subject: 5-speed w/ 5.9L swap?
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I am planning on swapping my 3.9L on my '93 4x4 and was wondering if I can keep my 5-speed tranny. I know it'll bolt up, but will it handle the torque and power of the 360 if I change the clutch and flywheel? I don't see why switching them with racing or high performance versions wouldn't work. Also, would regearing be a consideration? I'd appreciate any info.
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Dak_Yoda
Dodge Dakota
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2/04/2002
16:08:48
|  RE: 5-speed w/ 5.9L swap?
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i cant really answer your quest. but i'm swapping out the 4cyl in my 92 dak for a hi-po 360 and i'm going with an old muscle car type A833 4spd tranny for it's shear stength and durability, but the guy at Schumacher Creative Services (where i ordered the engine swap mounts from) said he's put those 5spd trannys behind the V8s before and hasnt had a problem.
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Dave Mitchell
Dodge Dakota
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2/04/2002
17:19:36
| RE: 5-speed w/ 5.9L swap?
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I was told by a computer tech that came to my office that he had a 1998 Dakota with the 5.9L (360) and 5-speed. But I don't know if it was the same 5-speed as in the 3.9L and 4.7L or not.
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phat4x4
Dodge Dakota
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2/07/2002
16:26:14
| RE: 5-speed w/ 5.9L swap?
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would switching it with one from the 4.7 be something to consider? is it any different than the one on my 3.9?
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Hersbird
Dodge Dakota
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2/07/2002
18:28:31
| RE: 5-speed w/ 5.9L swap?
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The 5-speed in all Dakotas is the NV-3500 and it is not rated for over 300 ft-lbs of input torque. It may last, but it's not designed to last. It's probably more then just a better clutch, actually putting a better clutch with more 'bite' is likely to increase the chance of failure. Put a few mods on a 360, a good clutch, some sticky drag radials and your bound to break something. The nv-3500 also has a 71% deeper first gear ratio then a 46RE automatic. That means if you had a 310 ft-lbs of rear wheel torque and 3.92 gears you would apply 2977 ft-lbs with the automatic (not really because of stall speed, and torque converter slippage) and 4241 ft-lbs with the 5-speed (which can be launched right at peak torque). So you see you are also increasing the chance of driveshaft and axle failure. The Rams with 360 and 5-speeds get the NV-4500 and Dana 60 rear ends to handle it.
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phat4x4
Dodge Dakota
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2/07/2002
18:52:56
| RE: 5-speed w/ 5.9L swap?
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Eventually, I would like to do a solid axle swap that will replace the rear end with a Ford 9 inch, which would definitely hold up. Then, I would like to go with custom driveshafts.
But, if I go with the NV-4500, would I be able to keep the NP-231 transfer case? Replacing the motor, tranny, AND transfer case isn't really in my budget. If I do, would I be better off taking all three off a junked Ram 4x4? If so, what other problems, if any, will I run into by putting them in the smaller truck? Anyhow, I appreciate the info.
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