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Considering a Gen III Hemi Swap #2718973
11/24/19 07:10 PM
11/24/19 07:10 PM
Joined: Jan 2011
Posts: 4,634
Central Florida
larrymopar360 Offline OP
I'm tired...Very tired.
larrymopar360  Offline OP
I'm tired...Very tired.

Joined: Jan 2011
Posts: 4,634
Central Florida
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
Joined: Jul 2008
Posts: 21,967
Florida STAYcation
Noble Crusader Offline
She gonna love me for long long time
Noble Crusader  Offline
She gonna love me for long long time

Joined: Jul 2008
Posts: 21,967
Florida STAYcation
SOUNDS LIKE you need to first consider joining the ThermoSquad !

Re: Considering a Gen III Hemi Swap [Re: Noble Crusader] #2718976
11/24/19 07:27 PM
11/24/19 07:27 PM
Joined: Jan 2011
Posts: 4,634
Central Florida
larrymopar360 Offline OP
I'm tired...Very tired.
larrymopar360  Offline OP
I'm tired...Very tired.

Joined: Jan 2011
Posts: 4,634
Central Florida
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
Joined: Dec 2009
Posts: 12,161
in a cattle trailer down by th...
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Guitar Jones Offline
Paddle faster! I hear banjo music!
Guitar Jones  Offline
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Joined: Dec 2009
Posts: 12,161
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.


I never learned to count my blessings, I choose instead to live inside my disasters.

The Scamp is sold, now just two old trucks and one new one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. NV4500 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: 4,634
Central Florida
larrymopar360 Offline OP
I'm tired...Very tired.
larrymopar360  Offline OP
I'm tired...Very tired.

Joined: Jan 2011
Posts: 4,634
Central Florida
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
Joined: Jan 2011
Posts: 4,634
Central Florida
larrymopar360 Offline OP
I'm tired...Very tired.
larrymopar360  Offline OP
I'm tired...Very tired.

Joined: Jan 2011
Posts: 4,634
Central Florida
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
Joined: Feb 2005
Posts: 15,718
PA.
pittsburghracer Offline
"Little"John
pittsburghracer  Offline
"Little"John

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PA.
Why would you want to spend all that money to make it slower. Unless it’s a show truck.


1970 Duster
Edelbrock headed 408
6.143@110.85 mph
9.73@135.05 mph shifting at 6700 RPM
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
Joined: Nov 2006
Posts: 1,376
oklahoma
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forphorty Offline
pro stock
forphorty  Offline
pro stock
F

Joined: Nov 2006
Posts: 1,376
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
Joined: Jul 2008
Posts: 21,967
Florida STAYcation
Noble Crusader Offline
She gonna love me for long long time
Noble Crusader  Offline
She gonna love me for long long time

Joined: Jul 2008
Posts: 21,967
Florida STAYcation
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
Joined: Jul 2008
Posts: 21,967
Florida STAYcation
Noble Crusader Offline
She gonna love me for long long time
Noble Crusader  Offline
She gonna love me for long long time

Joined: Jul 2008
Posts: 21,967
Florida STAYcation
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: Noble Crusader] #2719047
11/25/19 12:15 AM
11/25/19 12:15 AM
Joined: Jan 2003
Posts: 7,304
Freeport IL USA
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poorboy Offline
master
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Freeport IL USA
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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Posts: 9,739
Omaha Ne
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TJP Offline
master
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Omaha Ne
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
Joined: Feb 2003
Posts: 15,352
Mesa, Arizona
dart4forte Offline
I Live Here
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Mesa, Arizona
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.

Re: Considering a Gen III Hemi Swap [Re: dart4forte] #2719233
11/25/19 05:01 PM
11/25/19 05:01 PM
Joined: Dec 2007
Posts: 16,913
Mass
DAYCLONA Online content
I Live Here
DAYCLONA  Online Content
I Live Here

Joined: Dec 2007
Posts: 16,913
Mass
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
Joined: Nov 2003
Posts: 1,742
Dandridge TN
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Dabee Offline
top fuel
Dabee  Offline
top fuel
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Posts: 1,742
Dandridge TN
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
Joined: Jan 2003
Posts: 5,752
Hamilton, Ontario Canada
Magnum Offline
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Hamilton, Ontario Canada
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
Joined: Jan 2011
Posts: 4,634
Central Florida
larrymopar360 Offline OP
I'm tired...Very tired.
larrymopar360  Offline OP
I'm tired...Very tired.

Joined: Jan 2011
Posts: 4,634
Central Florida
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
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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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Posts: 391
Central NY
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GarageDodge Offline
enthusiast
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Central NY
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
Joined: Jan 2011
Posts: 4,634
Central Florida
larrymopar360 Offline OP
I'm tired...Very tired.
larrymopar360  Offline OP
I'm tired...Very tired.

Joined: Jan 2011
Posts: 4,634
Central Florida
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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