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5.7 Swap into D150 Completed


This is a discussion on 5.7 Swap into D150 Completed within the Engine & Performance forums, part of the 1st Gen : 1981 - 1993 category!
The engine swap from a carb'd 318 to a 5.7 hemi is finally (pretty much) done. Just getting O2 sensors ...


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Old 11-07-2016, 10:30 AM   #1 (permalink)
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Smile 5.7 Swap into D150 Completed
The engine swap from a carb'd 318 to a 5.7 hemi is finally (pretty much) done. Just getting O2 sensors put in the exhaust and kickdown linkage adjusted, some other small things like that then it's ready to go. I kept the 727 transmission. Will make a video in a couple days to show you guys. It's just in time for the colder weather which will be nice not to deal with stalling and unpredictable carbureted issues this winter. I will miss the durability of the 318 but that's about it.
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Old 11-07-2016, 04:13 PM   #2 (permalink)
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Very nice! Do you have any pics of the swap as you were doing it?
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Old 11-07-2016, 04:25 PM   #3 (permalink)
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The majority of it was done by a mechanic who I know in my town. I was able to stop by a few times each week and help out where and when I could. I definitely learned a lot. I have a few pictures but nothing extremely detailed. I could however answer any questions on how it was done though
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Old 11-07-2016, 08:20 PM   #4 (permalink)
 
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That's Awesome! How much of the truck's original wiring is integrated with the new PCM? Which adapter plate did you use to mate the 5.7 to the 727 and are you still using the original accelerator pedal?


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Old 11-07-2016, 08:26 PM   #5 (permalink)
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Originally Posted by RonJon '06 View Post
That's Awesome! How much of the truck's original wiring is integrated with the new PCM? Which adapter plate did you use to mate the 5.7 to the 727 and are you still using the original accelerator pedal?
I bought a wiring harness from hotwireauto.com specifically made for putting a 5.7 in an old Mopar vehicle. Obviously none of the lighting and horn wiring etc was affected by this, but pretty much everything else was replaced. It came in a fully labeled bundle of wires which made it (sort of) easy to just plug in. I used a flexplate/flywheel made by Mopar performance I believe, it's specifically made for coupling the 727 with the 5.7 engine. Using the original accelerator pedal yes.... but not the original throttle linkage. The cable still leads from the pedal up to the engine bay, but then I bought a bell crank assembly (found only on 03 rams) that basially converts the mechanical workings of the throttle pedal and cable to a computer controlled throttle. The bell crank assembly is essentially the bridge between a mechanic input, but a computerized output.

I was the mechanic's "parts hunter" and researcher, so I figured *most of this out on my own and online. Then he made it happen using his knowledge of installation etc.
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Old 11-07-2016, 08:36 PM   #6 (permalink)
 
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Way cool


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Old 11-07-2016, 08:46 PM   #7 (permalink)
 
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Nice work. Need pick of the whole truck though.
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Old 11-07-2016, 08:49 PM   #8 (permalink)
 
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Originally Posted by Mega-Hemi View Post
Nice work. Need pick of the whole truck though.
Hear hear!

Is it an eagle Hemi?


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Old 11-07-2016, 08:51 PM   #9 (permalink)
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Feast ur eyes
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Old 11-07-2016, 08:54 PM   #10 (permalink)
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Originally Posted by ST-8 View Post
Hear hear!

Is it an eagle Hemi?
Not sure what an eagle hemi is..... it's a hemi from a 2012 ram 1500. Approx 22,000 km's on it
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