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vmaughanster
Dodge Dakota
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1/03/2008
18:12:53
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 Subject: engine swap?
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Message:
hey I just picked up a 360 engine and I want to put in my 98 dakota sport but I want to use all of my 5.2 top end and computer i'm pretty sure I have it figured out but any input will help my main question is the 360 is the older style none roller enginge and my 5.2 is the newer style with the roller cam but as far as I know it should all fit together i'll just have to go non roller will it effect my computer or anything else? any input helps thanks
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gen1dak
Dodge Dakota
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1/03/2008
21:25:46
|  RE: engine swap?
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Message:
You can start with custom engine mounts. Examine the 318 mounts, then look at the 360. You'll see what I mean. Then you can have the old 360's heads drilled to accept the Magnum intake, or include the 318 Magnum heads in the swap. Will it run? Yeah, but not as good as it could with the 360 stuff. Despite going roller cam, and changing the rocker ratio, the gross cam specs for LA 360's and Magnum 360's are essentially identical.
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gen1dak
Dodge Dakota
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1/03/2008
21:27:21
| RE: engine swap?
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Oooops, I forgot about the Magnum's crank sensor. The older LA blocks don't have this, so you'll need to fab something, or graft an aftermarket unit onto your setup.
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verlin
Dodge Dakota
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1/03/2008
21:41:16
| RE: engine swap?
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Message:
ok how about if i get a magnum 5.9? will it go in place of my 5.2 I got the other engine free so I won't really have any heartburn about gettin a new sound like you know whats up what do you recomend?
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gen1dak
Dodge Dakota
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1/06/2008
12:00:56
| RE: engine swap?
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Message:
Yeah, Mag for Mag swap is much easier. Get the computer for a 5.9 and it's a bolt-in swap on the engine. Same bolt pattern all the way around. One thing you will need is the external balance weight for the 5.9. Traditionally, the 5.9 carried an external balance weight on the torque converter. In 1996, Dodge changed this. The balance weight on '96 and newer models is on the flexplate. Get a 1996 or newer model flexplate for 5.9 or take your 5.2 unit and have the weights added by a reputable machine shop. Probably cheaper and easier to just order one from Dodge. You can, if you want to, use your existing torque converter. If it's working fine, and you're using the same tranny, that'll do, but if you're adding a new tranny, definitely get a new converter.
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Chookiesmith
Dodge Dakota
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1/18/2008
16:48:56
| RE: engine swap?
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Message:
I just put a new Dodge crate 5.9 in my 1998 sport that had a 5.2. Bought a flex plate and torque converter for the 5.9 because of the weights are different for the 5.9. Everything else bolted right up. I did use the 5.2 PCM but I had it flashed with better fuel curves. It will run with the 5.2 PCM but it just doesn't have power of a custom flash. You have to be careful replacing yours with a PCM from a 5.9. I did try one off a 1999 5.9 RT but in 1999 there were two upstream O2 sensors so it constantly tripped the check engine light as that unit looked for the O2 sensors. In early 1998 there were only two 02 sensors. The AC and transmission all works fine. The crate motor has a bigger cam and better heads so I would still like to find a better flash or a performance PCM for better performance.
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