Fuel injection swap or better carb/intake combo?

So im in a situation here, i have a 71 grabber, and i cant decide if i want to upgrade to a full multiport fuel injection set up off a 91 5.0, or if i want to just put a bigger carb and intake manifold on.... i need some input, i have the wiring harness, lower intake, upper intake, fuel injectors and fuel rails... so at this point the cost for a better carb setup is the same as what it would cost for the rest of the fuel injection stuff.... i just need some input on what i should do and i have a ford racing B303 cam and roller lifters

 

Do you have experience setting somthing like this up (EFI)....or would you have to pay somebody to do it for you?

 

If one costs as much as the other, flip a coin.

 

i think it's alot cheaper to gain hp with a carb and less of a pain in the ass to work on and find out why something isint working right ??

but the fuel injection is more reliable ?? i tought of going injected but then i would spend $1500 on just the injectors-intake-mas-
my friend had a 93 ex chp with the original computer with no rev-limiter and it ran a lil funny with a e-303 cam trick-flow intake bigger injectors and mas longtube headers and he sed it need's a tune wich cost about $600 from a shop

p.s best run he had at the track was 14.1 with 373's and the T-5

 

i personally would do the fuel injection. i understand fuel injection and am able to tune it and diagnose it if there are problems.
for the example the car above was most likely using a cheap maf that uses different size sample tubes to meter the air. if it used a electronically calibrated one like a pro-m it most likely would have ran 1 second faster at least.

 

Now there's some great advice coming from the all knowing.

I think it depends on what you plan on doing with the car also. I don't know that much about EFI but I love the reliability and the MPG you get with it. I'm putting a Lincoln Mark VIII 4.6 in a 64 Galaxie because of the above. But if I wanted to race it I would probably stay with a carbed motor, not that EFI can't run fast. Some one like Bryant who knows EFI and can tune can make one run but a simpleton like me is doing good to make the most of the carb set up, let alone mess with the computer stuff.

 

Hey, I thought I was being nice, there's no for your Peanut Gallery comment.
The guy has what he needs for both, but can't decide, if you ask for advice on here you'll get every answer under the sun. So? Whats the issue?

 

I suppose there are good reasons that manufacturers switched to FI but carbs are certainly easier and more fun IMO.

Now if you have an old staggered Crower injector setup sticking through the hood...THAT would be cool.

http://image.hotrod.com/f/techarticles/9256925+w200/p105995_image_large.jpg

(Guess I'm showing a little age here but hey, I spent a lot of time flipping through Hot Rod in the throne room in my younger days!)

 

As mentioned before.......if you have the ability to do the EFI tuning yourself or you don't mind having it tuned by someone else then it is the better way to go. However, should you not have this ability nor do you want to go back for a retune every time you change something then the carb is your best bet.

The new Holley, Proformance, and FAST systems require no professional tuning. They "learn" as you drive and offer a good performance upgrade without the need for a pro tuner.

 

I would never go back to card again . After duing my first efi set up 10 yrs. ago the driveability is so much better .

As you see I live in SoCal 50 - 200 ft above level . I can drive my mav from here to Aspin Co and the car will run the same at 5 - 6 -7000 ft above see level as it does thereat see level.

 

Bigger than what? Is it a daily driver or just a weekend cruiser?

 

Well i am sick of messing with the factory 2150 carb trying to get it just right, and i think i am just going to go efi, the only other problem with that is hood clearance....

 

the stock mustang efi will easly clear the hood. its the drivers side shock tower brace that has a clearance problem. it will require some creative fabrication to clear.

 

I'm currently in the process of installing a MegaSquirt EFI setup... a Ford Central Fuel Injection throttle body (bought mine for $30 on eBay) bolts directly on to a stock 2bbl intake, it looks kinda like a carb without fuel bowls and injectors sticking up. High pressure electric fuel pump is needed, but it's not a big pain. I've spent about $400 and I'm pretty much done With this I should be getting slightly more power than with a well-tuned 2bbl, and with a whole lot more drivability and MPG if temperature conditions vary day-to-day.

 

Chances are the carb's not the problem, the points ignition is. Be that as it may, I'm a huge carb fan, but the fact that you're in Colorado, EFI is really the way to go here. Where you're at, the huge changes in elevations play hell with how a carb works and performs. You can try and jet it for Denver's elevation, then drive 50 miles west(or less) and it'll suck at achieving proper fuel ratios there. The EFI will far outshine a carb where you're located.