Engine Fuel System??

Jeffncs

Jeffncs

Well-Known Member
Joined
Apr 4, 2017
Location
Wake Forest
77 bronco under construction
intended use: I’ll putter around town and URE, kids may take it tomHS occasionally
Goals: reliable, simple, and working quickly to get it road legal
Current state - fully disassembled but plan to have to on the road this fall

I have a 94 5.0 roller engine along with some of the EFI conversion parts, Missing computer, radiator, and need to make harness from the parts I have.

Challenges:
Cost and time to get running. The EFI is going to take more time than I have right now. BUT will be a better setup long term. I’ll also have to change the front accessories to an explorer setup, buy a 5.0 conversion rad.

Carb is quick and easy plus I have all of the parts.

Proposal: go straight carb and old school v-belts to get it on the road. Save the parts I have and do the EFI down the line when I have more time to tinker. Time constraint is that I want the older boys to have the chance to drive it to school before they leave for college.

Note - they’re not taking my truck to college, they have their own vehicles already.

Any opinions or thoughts out there? Am I overcomplicating it and should go with EFI from start?
 
The v-belts would stay long-term but I could easily swap in the EFI if I chose whenever. Just have to make sure I can still access the timing marker which is on the opposite side of the HB from the earlier 289/302.
 
Jeffncs said:
77 bronco under construction
intended use: I’ll putter around town and URE, kids may take it tomHS occasionally
Goals: reliable, simple, and working quickly to get it road legal
Current state - fully disassembled but plan to have to on the road this fall

I have a 94 5.0 roller engine along with some of the EFI conversion parts, Missing computer, radiator, and need to make harness from the parts I have.

Challenges:
Cost and time to get running. The EFI is going to take more time than I have right now. BUT will be a better setup long term. I’ll also have to change the front accessories to an explorer setup, buy a 5.0 conversion rad.

Carb is quick and easy plus I have all of the parts.

Proposal: go straight carb and old school v-belts to get it on the road. Save the parts I have and do the EFI down the line when I have more time to tinker. Time constraint is that I want the older boys to have the chance to drive it to school before they leave for college.

Note - they’re not taking my truck to college, they have their own vehicles already.

Any opinions or thoughts out there? Am I overcomplicating it and should go with EFI from start?
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Go Holley or fitech etc. use the carb for. Or then upgrade to that style system. Keeps the old school look with efi advantages. I have ran several. My yj has one and has been great for years. They are very affordable for the simplicity
 
One consideration…spark.

IIRC the late model 5.0 use a different firing order than old 289/302. Not difficult just have to consider it
 
Thanks to all for the input. I like the idea of starting off with the carb then swapping to the sniper or similar system that drops onto the 4-barrel I take. Def sounds like the smart call.

I’m trying to figure out pulleys. The v-belt and pass side water pump outlet may block visibility to the timing marker.
 
Jeffncs said:
Thanks to all for the input. I like the idea of starting off with the carb then swapping to the sniper or similar system that drops onto the 4-barrel I take. Def sounds like the smart call.

I’m trying to figure out pulleys. The v-belt and pass side water pump outlet may block visibility to the timing marker.
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Look into aces. I’m not familiar but pricing is phenomenal. I’m sure it’s a similar platform to Holley and fitech
 
Noel said:
Look into aces. I’m not familiar but pricing is phenomenal. I’m sure it’s a similar platform to Holley and fitech
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I have an Aces setup here i bought at Thanksgiving, I haven't got it installed, but all the parts look well made. It has spark control as well.
 
paradisePWoffrd said:
@Jody Treadway redid the factory efi on his ranger. Might be cheaper and better vs going TBI, when you decide to switch.
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Couldn't be happier with it. Mine is a Ron Francis engine swap harness from Summit and OEM A9L PCM. Same harness it had before, just wanted a new one to clean up the wiring.
OP would need all of the EFI stuff like upper and lowe intake and the sensors. They're all reasonble priced these days.
Seeing as how @Jeffncs will need the accressory drive items too, it won't be nearly as affordable as an aftermarket Sniper type system.
If you have any questions @Jeffncs, lemme know. I've done quite a few SBF OEM EFI conversions over the years.
 
Jody Treadway said:
Couldn't be happier with it. Mine is a Ron Francis engine swap harness from Summit and OEM A9L PCM. Same harness it had before, just wanted a new one to clean up the wiring.
OP would need all of the EFI stuff like upper and lowe intake and the sensors. They're all reasonble priced these days.
Seeing as how @Jeffncs will need the accressory drive items too, it won't be nearly as affordable as an aftermarket Sniper type system.
If you have any questions @Jeffncs, lemme know. I've done quite a few SBF OEM EFI conversions over the years.
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Actually…. Just last night I decided to stick with the serpentine setup (which I have everything) vs buying a new HB and custom pulleys/brackets to run a v-belt. I’ll just wire in a t-stat switch for an electric fan.

I also have the upper and lower intakes, stock mustang harness, dizzy. I’m really only missing the rad with the correct hose locations ($300) and computer. I learned I can set the stock tank up with a return to avoid buying an $800 fuel tank!

I just need to sort through my harness to weed out the nonessential circuits. (Did I ever tell you I hate wiring?!?!…. Well I do!!). 🤯

It feels like EFI using the stock setup could be closer than I thought…
 
I would definitely keep the serpentine setup and Ford efi if you can.

If it were me-- I would buy a cheap carbureted (with carb fuel pump) 302 off marketplace then run that while you church up the other engine.
 
Jeffncs said:
Actually…. Just last night I decided to stick with the serpentine setup (which I have everything) vs buying a new HB and custom pulleys/brackets to run a v-belt. I’ll just wire in a t-stat switch for an electric fan.

I also have the upper and lower intakes, stock mustang harness, dizzy. I’m really only missing the rad with the correct hose locations ($300) and computer. I learned I can set the stock tank up with a return to avoid buying an $800 fuel tank!

I just need to sort through my harness to weed out the nonessential circuits. (Did I ever tell you I hate wiring?!?!…. Well I do!!). 🤯

It feels like EFI using the stock setup could be closer than I thought…
Click to expand...
It's pretty easy really. The only "issue" I have had is making room for the mass air flow sensor and finding a happy home for it. I have a factory cut down harness already labeled if you're interested. Got from a forum member here from their running 5.0 buggy.
 
In that case, I would use the stock Ford EFI.

I had a 1985 Bronco with a 351W and 2bbl carb that I could not get to run off angle no matter what I tried. I ended up buying a complete 5.0 out of an early 90's Mustang and swapped it in. I did the wiring harness on my kitchen table with print outs off the internet. I'm probably below average with wiring stuff too. That was 20 yrs ago.
 
drkelly said:
In that case, I would use the stock Ford EFI.

I had a 1985 Bronco with a 351W and 2bbl carb that I could not get to run off angle no matter what I tried. I ended up buying a complete 5.0 out of an early 90's Mustang and swapped it in. I did the wiring harness on my kitchen table with print outs off the internet. I'm probably below average with wiring stuff too. That was 20 yrs ago.
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I got it the engine from you and now it's in Watford's corral of badassery, lol. Harness still going strong
 
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