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Considering a Gen III Hemi Swap #2718973
11/24/19 07:10 PM
11/24/19 07:10 PM
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Central Florida
larrymopar360 Offline OP
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I ask this here because considering a 6.4 into my 1979 W150. I think it's a long-shot, mostly because of all the unknowns. I have a somewhat good idea of the cost (professional mechanic doing all work). It's just such a daunting swap, with so many unknowns, that I think it might be too overwhelming. If there were a known paved path already spelled out for me, it would not be so scary. But I've done (mechanic that is with me providing parts and researching a lot) several small block swaps going from LA to Magnum V8, A999 to 727, and even those present several obstacles that don't come to mind until one starts such a project. My truck is a factory 360-4, and I know engine mounts, hood clearance, transfer case, driveshafts, flexplate, fuel tank (one only behind seat), etc. etc. etc. are just a few of the obstacles. The rear end is an 8 3/8 and probably won't last. Can this even transfer to a 4wd. Should I not even consider this? I think it might be too overwhelming BUT the thought of a super powerful, smoothing idling, easy starting, reliable, durable, yet classic square body Dodge really excites me.I'll leave it alone if I really should.

https://www.ebay.com/itm/Dodge-6-4L...Play-PCM-and-Harness-Mopar/392452095801?

P.S. edit: The truck is realiable now, don't get me wrong. I love the 360. But you know how carbs are, and more power is always fun. I'm not just a dreamer, I'm very serious about this swap if I have somewhat of a clear path.

Last edited by larrymopar360; 11/24/19 07:38 PM.

Facts are stubborn things.
Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2718975
11/24/19 07:14 PM
11/24/19 07:14 PM
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SOUNDS LIKE you need to first consider joining the ThermoSquad !

Re: Considering a Gen III Hemi Swap [Re: dIc dOc Deity !] #2718976
11/24/19 07:27 PM
11/24/19 07:27 PM
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Central Florida
larrymopar360 Offline OP
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Who be that?


Facts are stubborn things.
Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2718979
11/24/19 07:41 PM
11/24/19 07:41 PM
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in a cattle trailer down by th...
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Guitar Jones Offline
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in a cattle trailer down by th...
I have a 5.7 core that I've pondered putting in my W200 but it does present some problems and expense so for now I'm just going to stick with the FI Magnum.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Considering a Gen III Hemi Swap [Re: Guitar Jones] #2718982
11/24/19 07:44 PM
11/24/19 07:44 PM
Joined: Jan 2011
Posts: 15,713
Central Florida
larrymopar360 Offline OP
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Originally Posted by Guitar Jones
I have a 5.7 core that I've pondered putting in my W200 but it does present some problems and expense so for now I'm just going to stick with the FI Magnum.
That would be my second choice (An FI Magnum). I contacted a company in Ft Lauderdale that I happened across that seems to be very professional and have a clean shop and Mopar oriented. They say they can perform the swap, but have not done one as of yet. I was hoping they had done one.

Last edited by larrymopar360; 11/24/19 08:10 PM.

Facts are stubborn things.
Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2718988
11/24/19 08:07 PM
11/24/19 08:07 PM
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Central Florida
larrymopar360 Offline OP
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The company I spoke with is actually in Pompano Beach (close), American Muscle Performance. Would love to hear from anyone who has any experience. Otherwise, I would just use my friend and mechanic who runs his own shop, by himself. He would just take much longer and probably would prefer I take a project this size somewhere else, but will do it if I ask.

http://www.americanmuscleperformance.net/


Facts are stubborn things.
Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2719027
11/24/19 10:22 PM
11/24/19 10:22 PM
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PA.
pittsburghracer Offline
"Little"John
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Why would you want to spend all that money to make it slower. Unless it’s a show truck.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2719042
11/24/19 11:54 PM
11/24/19 11:54 PM
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oklahoma
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forphorty Offline
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oklahoma
Powerful, smooth idling, reliable , durable? Sounds like you need a stock 440. lol

Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2719044
11/25/19 12:04 AM
11/25/19 12:04 AM
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Originally Posted by larrymopar360
Who be that?


A Street Dominater intake and a ThermoQuad carb up

Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2719045
11/25/19 12:09 AM
11/25/19 12:09 AM
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Originally Posted by larrymopar360
The company I spoke with is actually in Pompano Beach (close), American Muscle Performance. Would love to hear from anyone who has any experience. Otherwise, I would just use my friend and mechanic who runs his own shop, by himself. He would just take much longer and probably would prefer I take a project this size somewhere else, but will do it if I ask.

http://www.americanmuscleperformance.net/


Did you look at some of their prices ?

oUcH !

Re: Considering a Gen III Hemi Swap [Re: dIc dOc Deity !] #2719047
11/25/19 12:15 AM
11/25/19 12:15 AM
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Posts: 10,486
Freeport IL USA
poorboy Offline
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I've done a Magnum fi swap into a classic 50s Mopar, and I've helped with a 5.7 swap in a 50s Mopar. My 39 Dodge truck has an efi 5.9 Magnum, and the 49 Dodge truck sitting her will get a 5.2 Magnum efi swap next summer. I really like the stand along EFI harness at www.hotwireauto.com, not cheap, but it flat out plugs in, hook up 4 wires to the truck's harness, and runs.

Its been done a lot of times. Not usually a cheap deal, buy worth every penny as far as I'm concerned.

Why not ask on the Gen III Hemi forum here? They can probably provide you with the latest info. Gene

Re: Considering a Gen III Hemi Swap [Re: poorboy] #2719121
11/25/19 11:28 AM
11/25/19 11:28 AM
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Omaha Ne
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TJP Online content
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Fuel system, wiring, exhaust, cooling, pulleys & brackets, engine mounts, ECM along with a few other issues as well those you mentioned can turn it inot a labor intensive money grabbing adventure. Think it through before committing twocents beer

Re: Considering a Gen III Hemi Swap [Re: TJP] #2719208
11/25/19 03:25 PM
11/25/19 03:25 PM
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Mesa, Arizona
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dart4forte Offline
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Talked with several shops about this. I was thinking on a 6.4 swap. First, they like to put a fresh wiring harness in the truck. Second, go the SB 727 route. You can always add an AOD later. Next, the fuel system. That needs a total upgrade. As far as exhaust you can go late model Jeep or Headers from Bouchillon. They also have motor mounts.

On the fuel system I went with a Tanks Inc universal tank relocated within the rear frame. The only thing I would have to do on a swap would change to an in-tank pump an add a return line.


“So if it’s on the internet it must be true”

Abe Lincoln
Re: Considering a Gen III Hemi Swap [Re: dart4forte] #2719233
11/25/19 05:01 PM
11/25/19 05:01 PM
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Mass
DAYCLONA Offline
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I'm slowly collecting the pieces for an E body Gen III swap, I'm still "old school" so I'm going with dual quads on the MP Gen III dual quad intake and run the aftermarket Gen III distributor drive, and plan on planting a 6 spd T56 behind it, no computer crap or in tank crap for this old boy....

Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2719306
11/25/19 08:56 PM
11/25/19 08:56 PM
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Dandridge TN
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Dabee Online content
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That should be a fairly easy swap. Lots of room in the W150 engine bay. I put a 5.7 in my 55 Dodge truck. Wasn’t that hard to do. Biggest issue was the tight engine bay in the 55. I had to move the fire wall back 6 increased to get it in there. I used a Hotwire plug and play harness.

Re: Considering a Gen III Hemi Swap [Re: Dabee] #2720174
11/28/19 11:44 PM
11/28/19 11:44 PM
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Hamilton, Ontario Canada
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Do the swap Larry. There is no way an equal LA engine could touch a 6.4L Hemi in terms of performance.

Another swap to consider is a 5.7L since they are 1 to 2 thousand as a good core and use a http://www.hotwireauto.com/?page=main

I think they had a harness to run a 5.7L Hemi with a GM computer. Which is the easiest and most readily available for support.


69 Super Bee, 93 Mustang LX, 04 Allure Super
Re: Considering a Gen III Hemi Swap [Re: dart4forte] #2720482
11/30/19 05:19 PM
11/30/19 05:19 PM
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Posts: 15,713
Central Florida
larrymopar360 Offline OP
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Originally Posted by dart4forte
Talked with several shops about this. I was thinking on a 6.4 swap. First, they like to put a fresh wiring harness in the truck. Second, go the SB 727 route. You can always add an AOD later. Next, the fuel system. That needs a total upgrade. As far as exhaust you can go late model Jeep or Headers from Bouchillon. They also have motor mounts.

On the fuel system I went with a Tanks Inc universal tank relocated within the rear frame. The only thing I would have to do on a swap would change to an in-tank pump an add a return line.
I like the idea of SB727 route at first at least. Enough to overcome at first. Yes, I agree with you on fuel system. I need to get the tank from behind the seat anyway. And it does seem that Jeep SRT headers would fit well. So much research to do. I have poked around ramchargercentral and the genIII forum here. If I do this I want to do it soon and not make it a five year project. Melbourne FL is not a big market, so shops are very limited.

Magnum, I agree, while I love old school small blocks they won't touch a 6.4 nor have the smooth idle, easy starting and relative good gas mileage.


Facts are stubborn things.
Re: Considering a Gen III Hemi Swap [Re: larrymopar360] #2720703
12/01/19 05:22 PM
12/01/19 05:22 PM
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Freeport IL USA
poorboy Offline
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Part of what makes the modern Hemi work so well is the OD trans. Without the OD, the gas mileage will probably not be much better (might be worse) then your current V8. On a truck, your looking at moving the existing trans crossmember back and drilling some holes, and having a driveshaft cut. A factory modern Hemi trans is a stronger trans then a standard 727. It also seems to me that the bolt pattern on the bell was different then a small block pattern, but that could be wrong.

When we did the 5.7 in my son's 57 Dodge wagon, we used a fuel tank and its in tank pump from a mid or late 90s S10 pickup. It will probably fit in the frame behind the rear axle on your truck, the tank is in the rear most foot well (behind the rear axle) of the wagon. We did have to add an adjustable fuel regulator with a return line back to the tank. The S10 tank and pump new cost about 1/3 of anything Dodge related and will do the job, with the addition of regulator and return line. We used the Hot Wire harness.

Its not a cheap swap, but don't cause more issues by trying do it on the cheap. Those corners you cut will come back to haunt you. Gene

Re: Considering a Gen III Hemi Swap [Re: poorboy] #2720717
12/01/19 05:56 PM
12/01/19 05:56 PM
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Central NY
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GarageDodge Offline
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You also use a complete pullout of a wrecked car.Engine, trans wiring harness,gas pedal,fuel tank.I have sold a couple charger r/t wrecks for gen 3 swaps.

Re: Considering a Gen III Hemi Swap [Re: GarageDodge] #2720728
12/01/19 06:31 PM
12/01/19 06:31 PM
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Central Florida
larrymopar360 Offline OP
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Good info Gene, thank you. I have been looking at some low mileage yard ones. There aren't many local ones but keeping eyes open in Orlando area.


Facts are stubborn things.
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