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Old 01-30-2009, 02:28 PM
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My 1990 Bronco XLT 351W EFI help...

What I was wondering is how I can get more horsepower with bolt-ons such as the GT40 Turbo swirl heads... if I bolt these on, will my stock intake (being an EFI one) bolt up to the heads with no issues or.... what can I use?

Super Charging would be nice... what would be a good setup (compressor, fuel pump, etc.) to use? I would like to be able to keep the injectors stock if possible.

For the most part, I'd like to keep the rest of the motor stock. I looked up the power specs for the 351W with EFI and the chart I saw for Ford Motors was the motor has 215HP and 315Torque. Somewhere around there..

I am looking for more HP...and a little more torque.. numbers don't matter.. Best bang for the buck and easiest installation.. As long as I don't have to change the bottom end, that would be cool.. Top end is easiest for me..


As my truck sits, it's still completely stock from the factory. 123k miles on it, and doing the rear main seal here shortly.. previous owner was a female and didn't do regular oil changes and that's why the seal leaks like a siv now...lol

No metal in pan so I know my internals are good.. however there might be a leaky valve guide... that's why I would rather be able to slap a new set of fully assembled heads in if I Can bolt it all together..


Also, if I do use bolt-ons, would I have to re-program my ECU??


Sorry for my first post and long one at that.. I've been looking around on different forums for a long time and nothing specific for a factory EFI on a 90 or 91 Bronco.................................

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Old 01-30-2009, 05:13 PM
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I would switch to a mass air system from a mustang. They are more forgiving than the speed density. Heres a video of a edelbrock headed, big cam 351 running on a stock 5.0 tune.
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Old 02-01-2009, 12:29 PM
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That was a f*in awsome smokey there.. hahahaha

On my stock motor, how would I switch to the MAF? What would I have to change/swap, etc.. treat me like a n00biŁ... I know my other vehicle to nearly a T.

How much power could I expect from the stock cam? Also will the GT40 Turbo Swirl heads bolt right up with my stock intake that is a EFI intake?
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Old 02-01-2009, 03:18 PM
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You will the need the computer from a 89-93 mustang, wiring harness and sensors. I believe you can make your harness work try a google search.

Read this and this.

The heads will work and you will need the 351 lower intake becasue the 351 is wider than the 302.
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Old 02-01-2009, 03:40 PM
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Would it matter if I am running the E4OD trans? It's electronic (pushbutton Overdrive on/off)
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Old 02-05-2009, 08:51 PM
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*bumpity*

I have the E4OD (electronically controlled transmission) would that make a difference if it were speed density or MAF?
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Old 02-06-2009, 06:37 AM
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Quote:
Originally Posted by Tecchie
*bumpity*

I have the E4OD (electronically controlled transmission) would that make a difference if it were speed density or MAF?
I dont know! google it. There tons of info out there.
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