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First timer 302 swap 94 f150 into 86CV

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  • 86CVLTDGuy
    replied
    Originally posted by Kodachrome Wolf View Post
    Yes. The ECU handles the injector firing order. All you need to ensure is that your spark plug wires come off the distributor using the HO firing order as opposed to the standard firing order.
    Awesome [emoji122] Thank You.


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  • Kodachrome Wolf
    replied
    Originally posted by 86CVLTDGuy View Post
    Even with the 2 engines different firing order?
    Does the ecm take care of that?


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    Yes. The ECU handles the injector firing order. All you need to ensure is that your spark plug wires come off the distributor using the HO firing order as opposed to the standard firing order.

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  • 86CVLTDGuy
    replied
    Originally posted by Kodachrome Wolf View Post
    Do not use the truck harness. You can completely re-use your factory wiring harness. There is no need to attempt splicing harnesses together.
    Even with the 2 engines different firing order?
    Does the ecm take care of that?


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  • Kodachrome Wolf
    replied
    Originally posted by 86CVLTDGuy View Post
    Is the plan to reuse the main plug off the 94 truck engine? Will I have to splice the truck wiring in some spots to match the CV connectors?

    Appreciate the feedback!
    I do still plan to give it a good clean!
    Do not use the truck harness. You can completely re-use your factory wiring harness. There is no need to attempt splicing harnesses together. Just totally remove the old truck harness and ignore it.

    You're effectively going to use the block and heads. You'll want to borrow your old valve covers, fuel rail, intake heater pipe adapter with the ECT, timing cover, exhaust manifolds (unless you're going to run shorty headers), and oil pan when you swap the equipment to the truck engine.

    The Mustang ECU will plug into the factory Panther wiring harness with no modifications.
    Last edited by Kodachrome Wolf; 11-01-2022, 07:33 PM.

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  • 86CVLTDGuy
    replied
    Bit of progress on stripping the truck engine down! No thanks to a stupid T40 bolt buried under the truck plenum!



    Got all the Mustang parts including the ECM from a 88 automatic. Including the whole harness.

    Iím trying to label with numbers everything that comes off, but Iím having trouble understanding the wiringÖ

    Is the plan to reuse the main plug off the 94 truck engine? Will I have to splice the truck wiring in some spots to match the CV connectors?

    Appreciate the feedback!
    I do still plan to give it a good clean!


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  • 86CVLTDGuy
    replied
    First timer 302 swap 94 f150 into 86CV

    Originally posted by gadget73 View Post
    s
    Don't waste your time with the stock cam either. Its crap and makes no power. The truck cam in 94 or so was the Explorer cam. Its like the stock cam on steroids. Still makes no power over 4500 rpm but under that it does a lot better.

    The HO cam makes lousy power under 2500, so unless you are changing the gears, its going to suck. With a 273 o 308, you'll have a much more useful driving experience with the truck cam. 355 or better, the HO cam works well.

    Find a Mark VII ECM and it should run OK. Plug it in, run the 19# injectors. Roller cams is roller cams so far as the distributor is concerned. Use whichever one is prettier. Find a ported stock lower intake, run the HO upper, modified HO throttle body, and a bored out stock EGR spacer to sit between it all. Should run quite fine, and probably will make 200-ish hp.

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    This is Great! Thanks.
    Will try it out with the truck cam to start.
    See how it runs. I can settle with if it runs OK.
    Last edited by 86CVLTDGuy; 10-29-2022, 12:16 AM.

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  • gadget73
    replied
    so I didn't read every reply.

    DO NOT shuffle injector wires around. The ECM firing order must match the camshaft firing order period. If you try and fake it, the fuel trim will not work as expected since one of the cylinders that are firing on bank 1 will physically be spraying fuel into bank 2. With a batch fire truck none of this matters, one O2 sensor, 2 injector drivers. SEFI does not like this.

    Don't waste your time with the stock cam either. Its crap and makes no power. The truck cam in 94 or so was the Explorer cam. Its like the stock cam on steroids. Still makes no power over 4500 rpm but under that it does a lot better.

    The HO cam makes lousy power under 2500, so unless you are changing the gears, its going to suck. With a 273 o 308, you'll have a much more useful driving experience with the truck cam. 355 or better, the HO cam works well.

    Find a Mark VII ECM and it should run OK. Plug it in, run the 19# injectors. Roller cams is roller cams so far as the distributor is concerned. Use whichever one is prettier. Find a ported stock lower intake, run the HO upper, modified HO throttle body, and a bored out stock EGR spacer to sit between it all. Should run quite fine, and probably will make 200-ish hp.

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  • 86CVLTDGuy
    replied
    Originally posted by jaywish View Post
    What is your area?

    Perhaps you might want to add that and vehicle data to your profile and signature just to avoid confusion.
    Iím up in northern Alberta, Canada. BrrrrÖ[emoji3063]


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  • Lutrova
    replied
    I believe if you're using a Mustang or Mk VII ECU, you'll want the matching fuel injectors. 19 lbs, I think? They should have orange tops.

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  • jaywish
    replied
    What is your area?

    Perhaps you might want to add that and vehicle data to your profile and signature just to avoid confusion.

    Leave a comment:


  • 86CVLTDGuy
    replied
    Okay!
    Safe to say Iím on the look out for:

    HO cam
    HO ECM
    HO upper intake and TB.

    A few guys in my area seem to have their own little collection of used parts available.
    Hoping to grab all of what I need in one place, at a package price.

    Any other critical needed parts on this HO conversion?

    Thanks again!


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  • Tiggie
    replied
    Since you are swapping the cam anyway, and you have the truck heads and orange top injectors... I vote it's time to just find an HO cam and ECM and do the HO conversion and gain a pretty decent chunk of horsepower. Plus it's all matched so the ECM plays nice because it's what Ford intended.

    The ECM would need to come from an 87-88 Mustang with an automatic, or a HO Lincoln Mark VII (88?-92). Cam could come from the Lincoln or any 86/95 Mustang 5.0.

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  • 86CVLTDGuy
    replied
    Sprayed most of the fasteners with Some PB blasterÖ hoping for the cleanest disassembly. [emoji1696]


    Wondering how it would work or if itís possible to swap an ecm? Something I could consider?


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  • VicCrownVic
    replied
    Ha, yes, things often don't go as planned when so many variables are involved.
    Makes sense to me that tearing the truck engine down now is no issue since you would really want it all to go back together in the car configuration.

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  • 86CVLTDGuy
    replied
    First timer 302 swap 94 f150 into 86CV

    Originally posted by VicCrownVic View Post
    No. I may not have this technically accurate, but in layman's terms the injector "firing" order is controlled by 2 controllers in the ECM, 1 per bank/side. So when there is a condition to increase or decrease injector duration it will incorrectly do this based on reading from the O2 sensors which are measuring per bank/side/controller. When it doesn't see the result it expects because it is not adjusting the injector it thought it was it then will try to compensate more.
    Makes sense. Thank You.

    Iím maybe getting ahead of myself, hung up on all the possibilities, now considering the cam has to go:



    Thinking Iíll start by removing items from the truck engine hoping to replace whatís needed with new or different donor parts.

    Worried that simultaneously removing parts from the CV and adding them to the truck motor could leave me with gaps of time / not remembering how items come apart etc.

    In my head Iím saying - stay warm in the garage get the truck motor ready. Then come time for the swap, itís a quicker turnaround and less room for error. Allows me to use the car up until swapping vs inoperable parked with parts stripped. Guessing most of the overlap / no run time will be when the accessories come off, hopefully just prior to swapping.

    Seems I can safely start tearing down the truck motor without worry of where items belong?

    If I know one thingÖit never usually goes as planned! FFS! [emoji41]


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    Last edited by 86CVLTDGuy; 10-26-2022, 10:49 AM.

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