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Discussion Starter · #1 ·
OK I have a 1990 bronco that came factory with a 302 and I have just purchased a Creb engineering 347 long block can anyone help me or tell me what I will have to swap out I’m using the factory intake for now.
 

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1986 Bronco Eddie Bauer 5.0 bone stock
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have i opened a big can of worms?
To say the least lol.

If you want to use your factory efi you will also need to probably get a tuned ECM to replace your factory one, or its not going to run right...pimpXS can hook you up for about 1k. Do you have the cam specs?

Or you can throw a carb on it for now.
 

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Discussion Starter · #4 ·
i dont know but i heard it would run on a factory 351 ECM the bronco is now totally restored super nice trying to keep the factory look in engine bay
 

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i dont know but i heard it would run on a factory 351 ECM the bronco is now totally restored super nice trying to keep the factory look in engine bay
Well that's going to depend on the cam really, see if you can get us those specs. Did the builder say it would run on the 351 ECM? If so then that may be the case, assuming they know about ford speed density EFI systems, and with it being Creb they probably do.
 

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as of now i only have the part number TFS-51403001
112 LSA might be a bit low for the factory ECM, i think 114 is the lowest they recommend...but someone else can jump in here
 

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To add to my above comment, and yours about keeping the factory EFI...you can still do that, but i feel like you're going to need to upgrade your ECM...also probably upgrade to 4 hole explorer injectors while your at it...probably looking at spending another 1200 bucks to get it running right.
 

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Discussion Starter · #9 ·
iam sure jeremy at creb will help me out also but hes has been very busy so i am trying to do a little research myself and do appreciate any help here.i get the new motor end of week
 

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'88 XLT. 2" lift, 3G, Saginaw Pump, Headers, High flow 3" cat, 3" exhaust, 6 litre tune, K&N
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For speed density EFI you need lobe separation 114 degrees or higher and less than 210 degrees duration @0.050". That cam is 112 lobe separation and 221 deg intake duration at 0.050". So that cam will not work with Speed Density. You can switch to MAF EFI or pick a SD friendly cam.
 
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Discussion Starter · #11 ·
wow did not expect to spend a lot more,i have 27K in it now but a great paint job and super nice leather interior
 

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'88 XLT. 2" lift, 3G, Saginaw Pump, Headers, High flow 3" cat, 3" exhaust, 6 litre tune, K&N
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That cam also has a 2,000 rpm - 5,000 rpm operating range, which is a bit too high for a heavy four wheeler. Ideally you want your operating range just above idle for crawling and acceleration in every day traffic.
 
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Where is a build thread at? Sounds like you got a nice ride...this needs documentation, pictures, etc.

And if you're at 27k...whats another 1k to make it purr. I saw where you posted about purchasing an engine about 3 months ago and you was given a lot of good info, including info about the Speed Density systems...
 

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that is true now the motor is on the way i need to learn more about the swap
I did a lot of research on this, but decided to rebuild my engine back to factory with a hone job, new rings, bearings, seals (mainly due to budget and the fact i have the ability and facilities to do so) Figured id spend the money later on more power if i decided i wanted it. And the route i had decided on was using pimpXS...but for similar money you can do a MAF swap. I liked the idea of the pimpXS just because it kept things more factory looking under the hood and had the ability to be tuned if i ever made any changes. Lots of foxbody mustang guys using it. I think either would suit your needs, but I'm going to let those with actual experiences speak to it.
 

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Discussion Starter · #18 ·
All I am warning out of my bronco is a good turn key drive anywhere vehicle if I want to that’s what I told creb when they were building the motor I’m not even going off road with it
 

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I see this engine on their Ebay site, lists this same cam and it uses refurbished ford factory cast heads. Wonder which heads they used because some pics show an E7 type head but some show the 4 bar GT40p head...and if they put that GT40p head on your new headers aren't going to work unless they built them to do so...might want to find that out as well. Unless you ordered an aluminum head.
 

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Discussion Starter · #20 ·
The headers from stans were made for the gt40p heads that I am getting from Creb engineering and Jeremy Informed me that I wouldn’t have to change out anything other than fuel pressure so I don’t know like I said I think I opened up a big can of worms I just want a good turnkey running bronco not a hotrod
 
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