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engine swap

Old May 21, 2021 | 12:13 AM
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engine swap

I have a 1989 ford f 150 with a efi 302 and auto tranny, just bought a 1996 f 150 for a donor truck and it has a efi 351 windsor also with an auto tranny. Would love to put the 351 in the " 89 " I know the firing order is differant . Do I need to use the eec computer from the 96 ? and is there anything else that would have to be swapped out also ? Would appreciate all advice moving forward with this Thanks to all that willing to HELP me Randy
 
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Old May 21, 2021 | 07:33 AM
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You can't use the '96 PCM without transferring all the wiring and the transmission too. Easiest solution is to pull the 5.8 and strip all wiring from it, bolt that into your '89 with the appropriate flexplate of flywheel, reattach the engine wiring that was originally on the 5.0. What trans is in the '89? The 5.8 will run on the 5.0 PCM but ideally you would have a 5.8 version, the exact model will depend on what trans the truck has.
 
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Old May 21, 2021 | 09:11 AM
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the tranny is a 4 speed automatic with overdrive how does that work with the firing order and distributor using the same computer
 
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Old May 21, 2021 | 06:47 PM
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Originally Posted by Lazor
the tranny is a 4 speed automatic with overdrive
Which one? What is the trans code on the drivers door pillar?

Originally Posted by Lazor
how does that work with the firing order and distributor using the same computer
The computer in the '89 doesn't care about firing order, the injectors are batch fired and those batches are the same for both motors.
 
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Old May 21, 2021 | 10:37 PM
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the sticker on the door pillar says trans "T" I think thats good news about the computer with the firing order I don't know alot about that stuff but from what i'm getting from you and what I had hoped is it might be a plug and play
 
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Old May 22, 2021 | 09:07 AM
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That is the AOD, the '96 will also have a 4sp auto but it's the computer controlled E4OD which is totally different.
You need a very specific flexplate to mate a 351w with an AOD, you cannot use the one that is on the 5.0(different balance) or the one currently on the 5.8(different offset). The 351/AOD combo was only ever used in the mid '80s Crown Vic so that is what you need to search for.
 
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Old May 22, 2021 | 02:36 PM
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Originally Posted by Conanski
The 351/AOD combo was only ever used in the mid '80s Crown Vic so that is what you need to search for.
.... and you would be referring to the 5.8L (351W) that was equipped with the 2 BBL variable Venturi carburetor used up to and including 1991 model years, on the models so equipped (mostly police vehicles), when the 5.0L (302) equipped versions were already equipped with SEFI beginning with the 1986 model years until the aforementioned 1991 model year. I always found it very odd as to why Ford did that with the 351W.
 
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Old May 22, 2021 | 04:42 PM
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Yes.. and yes Ford did some odd things with vehicles in this era.
 
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Old May 22, 2021 | 05:54 PM
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is it possible to get an after market one somewhere how would I know if I have the right one is there a differance to know its the right one?
 
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Old May 23, 2021 | 12:48 PM
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You don't have to find that car you just have to search for and order a new flexplate for that vehicle.
 
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Old May 23, 2021 | 07:55 PM
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I would like to get the motor rebuilt swap out the original head for aluminum heads and a larger cam for more hp any thoughts on that would that screw with the computer? Thanks for all the really helpful info I'll be hunting a flex plate down this week
 
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Old May 24, 2021 | 06:16 AM
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The part # for the flex plate you need is FRA-205 made by Pioneer.
 
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Old May 24, 2021 | 08:28 AM
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thanks for the p/n ordered this morning
 
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Old Nov 16, 2021 | 11:01 AM
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Started on swapping motors , but the male end on the wiring harness of the 89 distributor is different then the 96 can i just swap connectors by splicing the one off the 96 harness to the 89 harness? if so which wires do i splice together , the male end on 96--351 harness has a gray--orange tracer ,red --green tracer ,orange--red tracer black--green tracer ,black no tracer the male end on the 1989 --302 has blue wire no tracer---yellow -green tracer---red -blue tracer---white-blue tracer---green -yellow tracer---black-orange tracer
 
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