I am building a 98 Mustang with a 4.6, and I am thinking of getting rid of the EFI and going with a carb. Has anyone had luck with this? If so what size carb are you running? I am building this car for mostly street ,and some strip. I am hoping to get the care to run mid 11's. Any help would be appreciated.
Scott
I would stick with the efi, but it is doable, seen one at the local meet. He used an edelbrock manifold... Its a pretty straightforward setup. To run 11's I would think you'd need at least a good 750cfm carb, maybe a modified one like the carb store, barry grant, etc. Personally I like edelbrock carbs for the street as opposed to a holley, edelbrocks are very reliable on the street while the holley is sensitive to weather, ie atmospheric pressure, humidity, etc but at the track its hard to be a well set up holley. Back when I ran a carb I had a 750 edelbrock for the street and a 750 holley double pumper with 4 corner idle for the track. If you go to a carb I highly recommend getting a "carb hat" vacuum guage, it takes most of the guessing and trial-and-error out of tuning the carb. Not sure how you would set up the ignition on a 4V with a carb tho, no distributor, and the computer would have a fit without the efi stuff in place.
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That hunk of junk? Yeah, well I've made a few special modifications to that yellow 99 Gt, it makes the Kessel run in 12 parsecs and eats turbo japs and poops chevy's
and the computer would have a fit without the efi stuff in place.
i dont know why but that last line sounded hysterical.
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Procharged 2002 Mustang GT 5 Speed 351rwhp 353rwtq at 10psi
Next summer looking to go with:
Bilstien shocks + struts, Lowering springs (brand still TBD (any suggestions?)), MM CC plates, front + rear sway bars, subframes, and upper and lower control arms.
Time to make the pony ride some rails
why why why???? For a street car? You must be joking. People do efi swaps on the old cars so they start and run properly without messing the the carb all the time. Have you ever owned a carb'd car?
yea my buddy has it done with his 98 and he used the edelbrock but like stated before i wouldnt reccomend that for the street his is an all out drag car but yea its pretty simple design and can be done
lol i dont really understand the "why" aspect of this question either, but im not gonna call you an idiot for wanting to do something to YOUR car like some ppl on here will
on that note: funny you should mention a holley being an unreliable carb?? im very confused at this fact ?? unless you are a chevy carb guy cuz chevys HATE holley carbs and LOVE edelbrock carbs?? not sure why but its true and a LOT of carb guys agree with me... NOT TO MENTION i have seen stock ford trucks with holley 4bbl carbs on them that ran GREAT!! winter or not... and my 1978 Bronco was ran by a holley 650 4bbl and winter time, low on fuel, sideways, completely vertical (off-roading).... AND when its like -10 out, i could go out, pump my pedal twice, turn the key and walk away and she would run like a champ... NO CHOKE was hooked up either *it was supposed to be electric but i never put a hot wire to it cuz it worked without one lol* sooo i don really see the issue with a holley??
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"Its not about what you can BUY, its about what you can build" anyone can buy a really cool car, but u dont ever get the satisfaction from it as you would building it yourself 1994 Mustang GT 5.0/T5 Sold 1998 Mustang GT 4.6/T45 *soon 5.4 S/C* Flows cat-back, CAI, Ford Racing 3.73 gears, Torsen Diff, short throw shifter
Man you guys can bent out of shape just about a question! I am thinking about it, because it is differant than every other car out there. I run a 7 sec dragster with a carb so yeah I do have a grasp on carbs. This is going to be a car for my wife to go out and have fun with. A carb is differant, and don't like to do the same as everyonbe else out there. When all the dragsters run a BB chevy, I run a BB ford. I am asking because I am interested in how they performed, and any draw backs to them. Maybe I should just go buy the same wheels, guages, and cowl hood everybody else has, because thats what everybody else does, so it must be right.
just upgrade the efi, with modern "chips/tunes" it's much better, yeah maybe a little more expensive, but carbs are has been for a reason...
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"Goose, Hollywood's fine, I want Viper"
1995 Mustang GT Cnv 347(427 stroker being built!) almost done!
1996 Cobra with Kenne Bell 2.1 Supercharger and every other conceivable part you can bolt on it...650hp upgrade in the works
2003 Infiniti M45 V8 340 hp...a methadone treatment for reformed Mustang drivers
lol i think the first sentence in my post specifically said i wasnt rainin on ur parade lol i like carbs i just would rather run efi for fuel economy reasons...
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"Its not about what you can BUY, its about what you can build" anyone can buy a really cool car, but u dont ever get the satisfaction from it as you would building it yourself 1994 Mustang GT 5.0/T5 Sold 1998 Mustang GT 4.6/T45 *soon 5.4 S/C* Flows cat-back, CAI, Ford Racing 3.73 gears, Torsen Diff, short throw shifter
The funny thing is that you will still need a tune to turn off all the fuel stuff while leaving the spark control with the ECU. It will need a fuel system as well. It wont pass smog if that is an issue. Being an EFI tuner its so easy for me to dial in exactly what AFR i want for PT and WOT. Granted if you have a 7sec carb car, then you can dial a carb in pretty quickly too. If you want to be different, then go for it!
The funny thing is that you will still need a tune to turn off all the fuel stuff while leaving the spark control with the ECU. It will need a fuel system as well. It wont pass smog if that is an issue. Being an EFI tuner its so easy for me to dial in exactly what AFR i want for PT and WOT. Granted if you have a 7sec carb car, then you can dial a carb in pretty quickly too. If you want to be different, then go for it!
Thats what I was thinking. I was just curious if converting to a carb was not to bad, or just a pain in the butt. I want to put something together that she can drive to the track, race, and drive to work when she wants. I will look more into an upgraded EFI set up. Plus I'm not sure how tall it would be with a sulivan intake and carb. I am trying to get away from a giant cowl hood, one it looks bad, and two it's not real safe for the street. Thanks guy's.
Scott
scott, the best thing u could prolly do is go all out and just buy her a v3 vortech supercharger, slap it on the motor and make sure she keeps oil in it and she will be PERFECTLY happy a set of 3.73s for the rear end and a short throw if it dont already have one or a shift kit if its an auto
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"Its not about what you can BUY, its about what you can build" anyone can buy a really cool car, but u dont ever get the satisfaction from it as you would building it yourself 1994 Mustang GT 5.0/T5 Sold 1998 Mustang GT 4.6/T45 *soon 5.4 S/C* Flows cat-back, CAI, Ford Racing 3.73 gears, Torsen Diff, short throw shifter
Thats what I was thinking. I was just curious if converting to a carb was not to bad, or just a pain in the butt. I want to put something together that she can drive to the track, race, and drive to work when she wants. I will look more into an upgraded EFI set up. Plus I'm not sure how tall it would be with a sulivan intake and carb. I am trying to get away from a giant cowl hood, one it looks bad, and two it's not real safe for the street. Thanks guy's.
Scott
ok heres the deal. people on here speak to their opinion rather than facts, MOST of the time. I talked to a local mustang guy, loves carbs. I was looking at doing the 4.6 carb swap. so much easier to deal with. one little thing doesnt set the entire motor into fail safe and running like crap. i was looking at doing it, but if i did i was gonna do a 5.0 swap then do it. not too much more costly, but sooo much cheaper for parts later on. please let us know if you find out about the swap. i know the fuel pump and lines would have to be changed. that high pressure thing would drown a carb. u have any other ideas?
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1997 GT Coupe. CAI and Flow 40' Duals w/ o/r x pipe, Spec Stage 1 Clutch, Spec Aluminum flyhwheel. SCT 93 Performance Tune, hurst short shifter. New AutoX Suspension on the way!! ......"other mods may not be known"
"You can put it off, but it's a matter of time till it fails and leaves you with the rubber-sole express......"
Has anyone put a carb on a 4.6, 4 valve? 
i just would rather run efi for fuel economy reasons...
