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5.2 magnum motor in older vehicle #754111 07/21/10 01:05 AM 07/21/10 01:05 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	has any one had sucess with a magnum motor swap?? using the fuel injection and factory engine wiring harnesss ??? im looking to up grade to the more modern engine using the fuel injection and dakota/jeep computer and serpentien belt,,,stock not modified,, using a 904 tranny, any one????? thanks in advance 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754112 07/21/10 10:27 AM 07/21/10 10:27 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	We did this swap last summer in our 84 Ramcharger. The donor vehicle was a wrecked 96 Dakota. I made the decision early on that we would remove all of the Ramcharger wiring and use the Dakota wiring. That worked out well with only a few modifications necessary, including lengthening some wires. We did develop a problem that I finally fixed this past weekend. It had started stalling and stumbling on the transition back to idle. This was after the exhaust we had cobbled up came apart (even with the single Flowmaster still in place). It turns out that outside air getting to the downstream O2 sensor was the culprit. I got a different tailpipe back in and the problem went away. We have recorded a high of 20mpg on the highway, with about 17mpg the norm.

Re: 5.2 magnum motor in older vehicle [Re: Jim_Lusk] #754113 07/21/10 10:28 AM 07/21/10 10:28 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	One more thing, mid-90s Rams had a bracket that the computer mounts to. Depending on what vehicle and the availability of flat surfaces grabbing one is a good idea.

Re: 5.2 magnum motor in older vehicle [Re: Jim_Lusk] #754114 07/21/10 10:37 AM 07/21/10 10:37 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	hey jim,, thanks yes im aware of people using a complete wiring harness for a swap,,, ide be more then willing to do that,,but i have found a tet mule engine super low mileage so im told,,,with one the engine harness,,, so im wanting to adapt that to my vehicle,,hot wires makes or re works the magnum harnesses,,at a cost of 820 bucks ouch,,,,, then there is the notching of the bell housing on my 904 for the crank triger,,,from whjat i have seen no biggy,,, its converting the engine wiring,,hot wires tells me that the harness is probably missing one leg for the computer,,and they also told me to run the numbers on the J TECH computer to make sure it is a 8 cylinder computer since the guy seling the motor had or had access to mopar computers and such,,, msybe i should find a dakota or jeep,and gut the wiring????? 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754115 07/21/10 10:41 AM 07/21/10 10:41 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	For the most part the engine harness is all you really need. I just didn't want to go the effort of modifying the dash harness, plus we need the OBDII connector to pass smog. This was just easier for us. We also used a 92 Ram instrument cluster for the electric speedometer. Since you plan on running the 904 you will need to change out the speedometer drive. We did the engine/trans swap together as I really wanted the overdrive. Whatever year engine/harness/computer you are using you will want a wiring diagram for.

Re: 5.2 magnum motor in older vehicle [Re: Jim_Lusk] #754116 07/21/10 10:46 AM 07/21/10 10:46 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	i was told that since runnign the 904 for the time being,,it wont be a problem,,like if doing a 5.7 swap with the non computer tranny,, i was thinking if i could get a 97 dakota/jeep wiring diagram i might be able to figure out how to eliminate the wiring not needed,,,the hot wires re worked harness come with a 4 wire hook up simple but costly,,, 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754117 07/21/10 11:15 AM 07/21/10 11:15 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	You still need the speed/distance sensor for the computer. There was also something about the 97-up that made it more difficult, but I can't remember what the specifics were.

Re: 5.2 magnum motor in older vehicle [Re: Jim_Lusk] #754118 07/21/10 11:41 AM 07/21/10 11:41 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	ok im not sure what you meen about the speed sensor,,,,ive read thru a search that to try to advoid the OBD2 style if possible,,maybe this 97 motor,,and an earlier computer ??? i e mailed mega squirt,,hoping to hear back maybe i can advoid the factory computer all together if affordable 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754119 07/21/10 04:00 PM 07/21/10 04:00 PM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	In place of the original mechanical speedometer drive assembly is an electronic speed/distance sensor. And that doesn't matter which computer control you use.

Re: 5.2 magnum motor in older vehicle [Re: Jim_Lusk] #754120 07/21/10 10:23 PM 07/21/10 10:23 PM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	are you saying ide need this in my 904 using any computer or i can delete the speed sensor if using the 904 ??? sorry for all the confusion,,,ive been told by hot wire they can make the computer thing there is a manual tranny thanks 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754121 07/22/10 01:09 AM 07/22/10 01:09 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	Even with a manual trans you need a speed/distance sensor. Some of the earlier vehicles used a dual adapter, but the electronic part is different than the later.

Re: 5.2 magnum motor in older vehicle [Re: Jim_Lusk] #754122 07/22/10 09:35 AM 07/22/10 09:35 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	Quote: Even with a manual trans you need a speed/distance sensor. Some of the earlier vehicles used a dual adapter, but the electronic part is different than the later. so i guess the factory computer needs to see wheel speed ??? your the first with this information,,, ive been searching the after market,,but not a lot out there for the mopar magnum,, i have e mails to f.a.s.t and painless,and back and forth with mega squirt,, seems the easiest way is to get a complete donor dakota/jeep and use the entire vehicle wiring harness,, seems like theres more out there to fire a 5.7 hemi then a magnum engine ,,no wonder there arent a lot of magnum powered street rods out there ,,i guess it will always be a chevy world,,, if theres a way i will find it,,, 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754123 07/22/10 11:43 AM 07/22/10 11:43 AM
Joined: Feb 2003 Posts: 8,671 A Andrewh master
Andrewh master A Joined: Feb 2003 Posts: 8,671	so I have the prototype painless system. It is setup for the 98 and up connectors. They chose not to use the sensor over the transmission. Rather they modded the distributer to have a shutter wheel to pick that up. They also use a bunch of chevy sensors and spark controler. The 94 era magnums are apparently easier to use for a direct swap. Wedgeman did it and a couple of others. by 97 you are into odbII instead of odbI. There is a thread around where we are tossing around the mustang maf system swaping it over to run the magnum, but it requried a few distributer mods.

Re: 5.2 magnum motor in older vehicle [Re: Andrewh] #754124 07/22/10 11:53 AM 07/22/10 11:53 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	Quote: so I have the prototype painless system. It is setup for the 98 and up connectors. They chose not to use the sensor over the transmission. Rather they modded the distributer to have a shutter wheel to pick that up. They also use a bunch of chevy sensors and spark controler. The 94 era magnums are apparently easier to use for a direct swap. Wedgeman did it and a couple of others. by 97 you are into odbII instead of odbI. There is a thread around where we are tossing around the mustang maf system swaping it over to run the magnum, but it requried a few distributer mods. thanks i seen that tread using the mustang stuff,,was a little confusing to me,, funny thing i met a guy last week that converted the ford over the counter carb to efi kit to work on his pontiac street rod,,,he machined the dizzy to fit in the pontiac block,,shortened the dizzy shaft and put the gm dizzy drive gear on it,, then fooled the computer making a conversion cross over for the injection wiring firing order,,pretty slick,,, why are the 95 and earlier magnums easier to make work ?? the one im looking ta is a 97 motor super low mileage test mule engine,,, if 95 and earlier is easier,,,cant i get a 95 computer or are the pluggs differnt? a 95 puter and engine harness make it simpler ?? hot wire will make the harness a 4 wire hook up and reflash the puter to thing it has a stick shift so i dont need the tranny section of the puter,,for a whopping 820 bucks,, 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754125 07/22/10 12:09 PM 07/22/10 12:09 PM
Joined: Jan 2003 Posts: 16,123 Grand Haven, MI patrick I Live Here
patrick I Live Here Joined: Jan 2003 Posts: 16,123 Grand Haven, MI	look for a '96 or older dakota vehicle speed sensor. it plugs into the tranny where the speedo cable goes, and has I believe both the VSS and a cable drive for a conventional speedo. 1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod SOLD!* 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)

Re: 5.2 magnum motor in older vehicle [Re: patrick] #754126 07/22/10 12:14 PM 07/22/10 12:14 PM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	Quote: look for a '96 or older dakota vehicle speed sensor. it plugs into the tranny where the speedo cable goes, and has I believe both the VSS and a cable drive for a conventional speedo. ok thanks 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754127 07/22/10 08:47 PM 07/22/10 08:47 PM
Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada W Wedgeman pro stock
Wedgeman pro stock W Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada	I did this swap last year in my 67 Barracuda.. 94-95 models are the easiest to swap sinc you only need to connect the engine to the computer, it's a stand alone system. Running a 904, you don't need the vehicule speed sensor as the governor will do the job..or anything hooked to the trans... 4 wires to connect and you're ready to go ! The only hassle is tp mount the electric pump in the tank....use the stock unit. Dan

Re: 5.2 magnum motor in older vehicle [Re: Wedgeman] #754128 07/23/10 01:03 AM 07/23/10 01:03 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	96 does not have the mechanical output from the speed sensor. If the computer doesn't see the sensor it will set a code. 96 is the beginning of OBDII.

Re: 5.2 magnum motor in older vehicle [Re: Wedgeman] #754129 07/23/10 01:10 AM 07/23/10 01:10 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 OP top fuel
fstfish66 OP top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	Quote: I did this swap last year in my 67 Barracuda.. 94-95 models are the easiest to swap sinc you only need to connect the engine to the computer, it's a stand alone system. Running a 904, you don't need the vehicule speed sensor as the governor will do the job..or anything hooked to the trans... 4 wires to connect and you're ready to go ! The only hassle is tp mount the electric pump in the tank....use the stock unit. Dan thanks,,can you run a earlier computer on a later engine?? i have talked,,E MAILED,, read every thing i can find,,it seems like no one wants you to do this swap,, ive contacted places that have rebuilt computers, 2 or 3 places,,they want a vin# to program any computer,, with this 97 motor ive been told ill need a stich shift computer,, did you re work your wiring or send it out ? mega squirt stand alone KIT complete 950.00 then u need a lap top,,geez they sure dont make it easy i applowd you on your conversion 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

Re: 5.2 magnum motor in older vehicle [Re: fstfish66] #754130 07/23/10 01:16 AM 07/23/10 01:16 AM
Joined: Mar 2003 Posts: 18,678 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,678 Fresno, CA	97 shouldn't need a VIN, but you're right about a lot of these companies not wanting to give out any info. The big difference between the sensors/injectors/etc. between OBDI and OBDII is the downstream O2 sensor. A trip to the local library for wiring diagrams will tell a greater story of any differences. The wiring and computers are certainly different, but there's no reason you can't make the 97 engine a 95, electrically.

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