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Re: easiest way to swap an EFI Magnum into E body?
[Re: demon]
#626696
02/28/10 02:00 PM
02/28/10 02:00 PM
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Joined: Feb 2003
Posts: 8,671
Andrewh
master
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master
Joined: Feb 2003
Posts: 8,671
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easy and cheap do not go together. The cheapest way anyone has come up with so far requires you to pull the early magnum setup. Around 94 I think. Most wires can be trimmed out and all you need are power and ground to get it working. But I think that is tbi, not mpfi. The later models will require more work, or more money. Mega squirt is the cheapest, but you build it and program it yourself. If you look in the new parts threads, there is a tbi and mpefi controler that needs no programming. Will probably run around 1200 not counting the motor for all the pieces you need along with the kit. https://board.moparts.org/ubbthreads/show...p;vc=1&nt=2 It just gets more expensive from there. That doesn't count the new pan and pickup, motor mounts, flex plate to get the transmission to work, lines, etc.. EFI is not cheap.
Last edited by Andrewh; 02/28/10 02:17 PM.
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Re: easiest way to swap an EFI Magnum into E body?
[Re: Andrewh]
#626697
02/28/10 02:30 PM
02/28/10 02:30 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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It can be done fairly cheaply if you pull everything from the junkyard. Don't bother with the magnum v6, it gets no better mileage than the magnum 318. I would run the overdrive trans, it has been proven to be able to fit under a challenger without floor/frame mods, other than a custom trans crossmember, but that's just a bolt-on. You will want a factory service manual for the year/model of donor vehcile so you have a complete diagram of both the wiring harness and the bulkhead connector pinout. Then you move to start stripping out everying except the engine control parts of the wiring harness. Really I would not recommend the magnum efi swap just because of the lack of aftermarket support for the magnum efi controller, it limits your ability to mod the motor because the stock efi computer just can't compensate for it. I would suggest an aftermarket efi controller for more tunability, but if you're sure stock magnum performance is what you want, go for it. 
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Re: easiest way to swap an EFI Magnum into E body?
[Re: demon]
#626698
02/28/10 02:48 PM
02/28/10 02:48 PM
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Joined: Jun 2008
Posts: 1,822
Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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I am also looking into the same thing. As Andrew mentioned, Megasquirt is the cheapest and it will do the injection and also the timing. You eliminate the advance in the distributer and allow the Megasquirt to control everything.
I am going to do it in phases to break up the cost and to fully refine the results. Also allows you a fall back point if something does not work as expected.
Phase 1. I bought a 5.2L Magnum engine complete from oil pan to throttle body for a whopping $200. That raises my compression ratio to 9.1:1 right there. Putting EQ Magnum heads tapped to fit LA intake with Mr Gasket 5805 .038 head gasket. Carter BBD with stock electronic ignition. Add Carter electric fuel pump.
Phase 2. Replace ignition with Megasquirt handling all timing and blocking the advance plate in the distributor.
Phase 3. Retap the EQ heads for Magnum intake and put the Magnum throttle body and injectors back on. Have Megasquirt handle handle the injectors as well. Replace fuel pump with high pressure one and add return line to tank. Change throttle pressure linkage to a cable system to keep the transmission working properly.
Will keep the old numbers matching block just to say I have it.
Part of phase one is also adding a lockup A904 modified for higher speed lockup and a TF-2 shift kit. I am skipping the overdrive right now as it is not cost effective.
Craig
Last edited by denfireguy; 02/28/10 02:52 PM.
2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado
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Re: easiest way to swap an EFI Magnum into E body?
[Re: denfireguy]
#626699
02/28/10 08:05 PM
02/28/10 08:05 PM
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Joined: May 2005
Posts: 1,130
Dayton, Ohio
wldtm
super stock
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super stock
Joined: May 2005
Posts: 1,130
Dayton, Ohio
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I make Magnum EFI harnesses. Look under the modern mopar parts forsale.
PM me if you have questions.
Justin
Interested in having you car wired? Drag car, street car, EFI swap?
PM for details
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Re: easiest way to swap an EFI Magnum into E body?
[Re: wldtm]
#626700
02/28/10 11:36 PM
02/28/10 11:36 PM
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Joined: May 2005
Posts: 1,130
Dayton, Ohio
wldtm
super stock
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super stock
Joined: May 2005
Posts: 1,130
Dayton, Ohio
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I would stay factory efi, if you just want a cruiser. You need to be resourceful. A 95 an older AUTO magnum computer will work behind a stick. If you do a magnum swap, the 727 or 904 will at least need a notch in the bellhousing to pick up the crank signal off of the flexplate. If you want to do some bigger modifications, I would recommend a 96 (obd II) and newer PCM. The newer ones can be flashed to accomodate some cam upgrades etc. The other thing to think about is a high psi fuel pump. I would recommend for ease/cost the out of tank style. Mopar perf even has one in the catalog. Just my opinion Justin
Last edited by wldtm; 02/28/10 11:40 PM.
Interested in having you car wired? Drag car, street car, EFI swap?
PM for details
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Re: easiest way to swap an EFI Magnum into E body?
[Re: Jim_Lusk]
#626702
03/12/10 10:44 PM
03/12/10 10:44 PM
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Joined: Jan 2006
Posts: 118
Arkansas
hotrod98
member
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member
Joined: Jan 2006
Posts: 118
Arkansas
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We installed a 1995 5.9 with the A518 in my wife's cuda with the stock computer and cruise control. It will boil the tires off and gets 29 mpg with 3:55 gears. There's absolutely no reason to screw around with the computer.
Everyone that I've talked to that started trying to reprogram the computer, never did get the car running as well as it should have. I say leave everything stock.
We had to alter the torsion bar crossmember, bend the floor in a little near the accelerator pedal, alter the trans crossmember and shorten the driveshaft. You can use a mallory efi pump and add a regulator with a return. We added a sump to the tank but you don't absolutely have to.
Most reliable musclecar out of the twelve cars that we own and drive.
1970 Superbird 4-speed, Dana, bucket seats
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Re: easiest way to swap an EFI Magnum into E body?
[Re: hotrod98]
#626703
07/21/10 11:23 AM
07/21/10 11:23 AM
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Joined: Dec 2004
Posts: 1,757
levittown pa
fstfish66
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,757
levittown pa
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found this topic on google,,,cant find it on the board,,,,, wanting to swap a super low mileage 5.2 into my street rod,,,engine is said to have the engine harness and J TECH computer,,,
engine is said to be a test mule from chrysler of 1997 daktoa vintage,,
ide perfer to use the stock computer no mods,,,but the mega squirt is an option,,,but a over wellming web site,, i have e mailed mega squirt and i hope to hear back ,,,soon before this motor gets sold to some one else
hot wires tells me that there is probably one plug for the computer missing if only then engine harness is there,.,, any one know can i re work the engine harness to do what i need,,using a non computer lock up 904
1966 barracuda prostreeter super charged 340(SOLD)
1940 dodge coupe 241 hemi street rod
2014 ram express hemi 4x4 dailey driver
2015 cherokee
2013 R/T classic
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Re: easiest way to swap an EFI Magnum into E body?
[Re: fstfish66]
#626704
07/22/10 12:10 AM
07/22/10 12:10 AM
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Joined: Jun 2008
Posts: 1,822
Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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Quote:
found this topic on google,,,cant find it on the board,,,,, wanting to swap a super low mileage 5.2 into my street rod,,,engine is said to have the engine harness and J TECH computer,,,
engine is said to be a test mule from chrysler of 1997 daktoa vintage,,
ide perfer to use the stock computer no mods,,,but the mega squirt is an option,,,but a over wellming web site,, i have e mailed mega squirt and i hope to hear back ,,,soon before this motor gets sold to some one else
hot wires tells me that there is probably one plug for the computer missing if only then engine harness is there,.,, any one know can i re work the engine harness to do what i need,,using a non computer lock up 904
The easy part first, the lock up 904 is bolt on, no modifications at all except you need an LA flex plate instead of the slotted one on the Magnum. The lockup 904s had shudder issues so you might google that for modifications.
The first thing I would have the Megasquirt control is the spark timing eliminating the mechanical and vacuum advance. That appears to be pretty simple to do.
If and when I go with the Megasquirt to do fuel management, I will use the Mopar injector connectors but use my own wiring to keep it a little less confusing. There are too many extra wires in the factory harness for various sensors that I would not be using. I would use the stock LA engine harness to run the alternator, temp gauge, oil gauge, A/C compressor, etc. To keep as much of the stock look as possible, I would use the LA timing chain cover, water pump, V belts and a 340 air cleaner on the throttle body. There is no way to disguise the fuel rails and injectors but along with the fuel pump delete cover plate they will be the only tip off to more modern electronic fuel injection.
Then again, I may run out of money and just run the 2bbl Carter for now. I already have an electric fuel pump hooked up to make up for the now missing mechanical fuel pump.
This is all in a 73 Cuda with a 97 5.2L and a late non electronic lockup 904.
Craig
2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado
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Re: easiest way to swap an EFI Magnum into E body?
[Re: denfireguy]
#626705
07/22/10 12:22 AM
07/22/10 12:22 AM
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Joined: Dec 2004
Posts: 1,757
levittown pa
fstfish66
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,757
levittown pa
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Quote:
Quote:
found this topic on google,,,cant find it on the board,,,,, wanting to swap a super low mileage 5.2 into my street rod,,,engine is said to have the engine harness and J TECH computer,,,
engine is said to be a test mule from chrysler of 1997 daktoa vintage,,
ide perfer to use the stock computer no mods,,,but the mega squirt is an option,,,but a over wellming web site,, i have e mailed mega squirt and i hope to hear back ,,,soon before this motor gets sold to some one else
hot wires tells me that there is probably one plug for the computer missing if only then engine harness is there,.,, any one know can i re work the engine harness to do what i need,,using a non computer lock up 904
The easy part first, the lock up 904 is bolt on, no modifications at all except you need an LA flex plate instead of the slotted one on the Magnum. The lockup 904s had shudder issues so you might google that for modifications.
The first thing I would have the Megasquirt control is the spark timing eliminating the mechanical and vacuum advance. That appears to be pretty simple to do.
If and when I go with the Megasquirt to do fuel management, I will use the Mopar injector connectors but use my own wiring to keep it a little less confusing. There are too many extra wires in the factory harness for various sensors that I would not be using. I would use the stock LA engine harness to run the alternator, temp gauge, oil gauge, A/C compressor, etc. To keep as much of the stock look as possible, I would use the LA timing chain cover, water pump, V belts and a 340 air cleaner on the throttle body. There is no way to disguise the fuel rails and injectors but along with the fuel pump delete cover plate they will be the only tip off to more modern electronic fuel injection.
Then again, I may run out of money and just run the 2bbl Carter for now. I already have an electric fuel pump hooked up to make up for the now missing mechanical fuel pump.
This is all in a 73 Cuda with a 97 5.2L and a late non electronic lockup 904.
Craig
if you said if you have mega squirt control your fuel >??? what are you using now to run the factory injection ??
i want to use the magnum alt,a/c compressor,,serpintine belt,,,injection,,,ide assume if ur controlling the injection,,you would have to control spark and advance with the same system,, my 904 has hyd lock up and never any issues,,,
1966 barracuda prostreeter super charged 340(SOLD)
1940 dodge coupe 241 hemi street rod
2014 ram express hemi 4x4 dailey driver
2015 cherokee
2013 R/T classic
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Re: easiest way to swap an EFI Magnum into E body?
[Re: denfireguy]
#626706
07/22/10 07:16 AM
07/22/10 07:16 AM
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Joined: Dec 2006
Posts: 3,533
Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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Quote:
If and when I go with the Megasquirt to do fuel management, I will use the Mopar injector connectors but use my own wiring to keep it a little less confusing.
Find the '5.9 EFI a different way' thread, I put some info in there about a nearly-standalone injector harness that can be pulled from a Northstar. Easiest & cheapest route to wire injectors, IMHO.
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Re: easiest way to swap an EFI Magnum into E body?
[Re: fstfish66]
#626709
07/22/10 10:33 AM
07/22/10 10:33 AM
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Joined: Aug 2003
Posts: 11,179
Atco NJ
DJVCuda
I Live Here
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I Live Here
Joined: Aug 2003
Posts: 11,179
Atco NJ
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Quote:
Quote:
Quote:
If and when I go with the Megasquirt to do fuel management, I will use the Mopar injector connectors but use my own wiring to keep it a little less confusing.
Find the '5.9 EFI a different way' thread, I put some info in there about a nearly-standalone injector harness that can be pulled from a Northstar. Easiest & cheapest route to wire injectors, IMHO.
searched it every way possible,,must be a really old topic no luck but thanks
don - use the google bar at the top of the page here - it will search topics
5.9 EFI a different way
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Re: easiest way to swap an EFI Magnum into E body?
[Re: DJVCuda]
#626710
07/22/10 10:40 AM
07/22/10 10:40 AM
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Joined: Dec 2004
Posts: 1,757
levittown pa
fstfish66
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,757
levittown pa
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Quote:
Quote:
Quote:
Quote:
If and when I go with the Megasquirt to do fuel management, I will use the Mopar injector connectors but use my own wiring to keep it a little less confusing.
Find the '5.9 EFI a different way' thread, I put some info in there about a nearly-standalone injector harness that can be pulled from a Northstar. Easiest & cheapest route to wire injectors, IMHO.
searched it every way possible,,must be a really old topic no luck but thanks
don - use the google bar at the top of the page here - it will search topics
5.9 EFI a different way
dave, thanks ill give it a try,,never even realized it was there daaaa so im old lol
1966 barracuda prostreeter super charged 340(SOLD)
1940 dodge coupe 241 hemi street rod
2014 ram express hemi 4x4 dailey driver
2015 cherokee
2013 R/T classic
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Re: easiest way to swap an EFI Magnum into E body?
[Re: DJVCuda]
#626712
07/22/10 11:15 AM
07/22/10 11:15 AM
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Joined: Dec 2004
Posts: 1,757
levittown pa
fstfish66
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,757
levittown pa
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Quote:
Don - have you thought about EZ EFI?
DAVE,, i seen the system on your cuda,,was wondering about it,,,went to f.a.s.t web site,,,seen your posting about tunnel ram,,,then i seen the pricing,,,but didnt see the computer price,,was thinking may be kool on my blower motor
but currently im looking at a super low mileage 5.2 magnum with all the factory efi and engine harness,,to swap in to my street rod,,there has to be a way to power the stock efi with out a lot of hoopla,,,,seems the best way is using a mega squirt,,,talking with them now,, or a complete wiring harness from front to back from a donor dakota/jeep
1966 barracuda prostreeter super charged 340(SOLD)
1940 dodge coupe 241 hemi street rod
2014 ram express hemi 4x4 dailey driver
2015 cherokee
2013 R/T classic
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Re: easiest way to swap an EFI Magnum into E body?
[Re: DJVCuda]
#626714
07/22/10 11:19 AM
07/22/10 11:19 AM
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Joined: Dec 2004
Posts: 1,757
levittown pa
fstfish66
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,757
levittown pa
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Quote:
its not for boost... and the computer is included
i seen the seperat pricing i guess 980 for the throttle body,,each....367 for the fuel pump,,,,
im sure is wasnt desogned for a drawl thru blower,,but might be able to be made to work,,,but ive got um,,,,,wayyyyyy to much money in my carbs,,at this point to spend that kind of bucks on it what kind of performance/mileage you getting ??
1966 barracuda prostreeter super charged 340(SOLD)
1940 dodge coupe 241 hemi street rod
2014 ram express hemi 4x4 dailey driver
2015 cherokee
2013 R/T classic
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