I have a very tired 5.0 EFI. I just bought a newly rebuilt 5.0 with big cam that is carburated with 2500 miles. Should I keep the carb or rebuild the EFI? I will mostly be street driving or pulling a 3000 lb Travel trailer. I am currently running 37in. tires with a 411 rearend. Any suggestions????? Thanks.
Efi Or Carb?
Started by
Guest_smedic2547_*
, Jun 24 2004 09:24 AM
13 replies to this topic
#3
4xfan78
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Posted 24 June 2004 - 09:43 AM
I agree if you can go with fuel injection with little cost I would throw the carb in the trash. Too bad they dont have efi for 400m's. 
GOT MUD?
#4
Txquadhunter
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Posted 24 June 2004 - 11:03 AM
you don't state the year of your Bronco. But yes a EFI system is much better then a Carb'd rig. If your Bronco is new enough to have the MAF EFI system they'll easily work well with big cams and upgrades to a point. The SD system will allow ease of cam upgrades and such to about 20% more.
try www.fordfuelinjection.com for lots of info over it.
try www.fordfuelinjection.com for lots of info over it.
#5
Guest_Gunner_*
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Posted 24 June 2004 - 11:28 AM
CARBBED UP!!!!!!! wouldnt trade my carb in if someone offered to give me fi and install it for free. i love my carberator and unless you have a lot of money i suggest you start liking it to. to convert a carbbed engine costs a pretty penny.
#6
Shadow_D
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Posted 24 June 2004 - 02:58 PM
You say you already have the EFI in your truck but the new motor is setup with a carb, right?If that is the case then KEEP THE EFI!
You may want to replace the injectors and will want a top end gasket set. Also you should throughly clean the plenum inside and out.
Fuel mileage is a big deal now, next year they say the cost of a gallon of regular unleaded will be around $3.00 & I will be willing to bet any amount of money that the following year it will be between $3.50 & $4.00 per gallon, my guess is it will be closer to $4.00 which INHO it total Horse $h!%.
You may want to replace the injectors and will want a top end gasket set. Also you should throughly clean the plenum inside and out.
Fuel mileage is a big deal now, next year they say the cost of a gallon of regular unleaded will be around $3.00 & I will be willing to bet any amount of money that the following year it will be between $3.50 & $4.00 per gallon, my guess is it will be closer to $4.00 which INHO it total Horse $h!%.
90 Bronco Full Size
Police Package
351W
E4OD
31" Tires
Going through a complete restore
http://fullsizebronc...ail.php?id=1650
Police Package
351W
E4OD
31" Tires
Going through a complete restore
http://fullsizebronc...ail.php?id=1650
#8
Seabronc
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Posted 25 June 2004 - 01:29 PM
Keep the EFI. Converting to a carb from an EFI would basicly require trashing your existing computer and harne3ss and getting a harness and computer for a carb.
I happen to have a carbed 351 but wouldn't convert to a EFI for the sane reason you shouldn't convert to a carb. That is assuming that fuel economy
if there realy is such a thing in a Bronco, is your goal.
I love a carb and wouldn't convert even if I had an EFI setup.
Good luck,
I happen to have a carbed 351 but wouldn't convert to a EFI for the sane reason you shouldn't convert to a carb. That is assuming that fuel economy
if there realy is such a thing in a Bronco, is your goal.I love a carb and wouldn't convert even if I had an EFI setup.
Good luck,
"I know you think you know what I said, but what you need to know is, I did'nt say what I meant"
#9
Guest_cowboydan_*
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Posted 29 June 2004 - 08:48 PM
i have a 5.0 with 305,000kms. gave her a lil' tune and i have no power problems. i don't think carb is a good trade cause o fule eco, but carbs always step out and need constant tuning, jetting and if you go to the mountains the thin air hurts carbs way worse than efi
#10
hawk2100n
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Posted 30 June 2004 - 06:41 PM
the design of EFI does get more torque and fuel efficency than a carb but EFI is much harder to tune being that everything is controlled by a computer. carbs are easier to tune and also provide more flexibility for upgrades in the engine.
P.S. because this is such a popular subject, we should add a dedicated section in the how to formus about this subject.
P.S. because this is such a popular subject, we should add a dedicated section in the how to formus about this subject.
#13
Guest_207racing_*
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Posted 09 July 2004 - 05:39 AM
Ok, for those of you that have removed efi for the choice of a carb. Obviously you have to replace the high pressure inline pump with a low pressure one, would you disconnect it, or leave it in place and running?
Reason I ask is I just got the EFI put back on and I have rough idle when cold and wont start when hot for about 10 minutes after you shut it off. I just tested the tank pump and it isn't running. I am hoping it is disconnected somewhere.
Reason I ask is I just got the EFI put back on and I have rough idle when cold and wont start when hot for about 10 minutes after you shut it off. I just tested the tank pump and it isn't running. I am hoping it is disconnected somewhere.
#14
Guest_custom_78_*
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Posted 09 July 2004 - 08:11 AM
4xfan78, you can buy an aftermarket system and adapt to the 400m. My dad jut put a BDS fuel injection on a #51 windsor braket racing motor with the bug catcher type throttle body. It may be a little epensive but it can be done.I agree if you can go with fuel injection with little cost I would throw the carb in the trash. Too bad they dont have efi for 400m's.
I would also go for the EFI instead of the carb.
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