Very tired of my injected 5.0, going carbed ? What U think ??

jones · Mar 31, 2004

Many of you probably know that ive been going crazy with all my electrical problems on my car. Its a 93 mustang GT. My plan was to run " Juice " on the car anyways. SO , am thinking of going carbed.

The question is; Do you guys think i should throw a carb on my car and get it running again? or should i just try and fix the electrical stuff?

What would be the pros and cons of running my 93 carbed vs. injected? Would i lose or gain HP? Is carbed better for NOS than injected ?

What do i need for the complete change-over?

Any ideas on the subject would be great!

Thanks............

speedytang · Mar 31, 2004

With the price of Carbs I would stay fuel injected and enjoy the benefits of easy starting and a snappy throttle response. I have Corvettes and after having fuel injection I would like to remove my carbs on them but of course the value drops if changed. You will have less power down low but carbs always show more power in the high rpms but with a 6200 rev limit you will not really see that benefit. Try to find articles on the 85 and compare the hp and torque curve and you will see the difference.

speedytang · Mar 31, 2004

With the price of Carbs I would stay fuel injected and enjoy the benefits of easy starting and a snappy throttle response. I have Corvettes and after having fuel injection I would like to remove my carbs on them but of course the value drops if changed. You will have less power down low but carbs always show more power in the high rpms but with a 6200 rev limit you will not really see that benefit. Try to find articles on the 85 and compare the hp and torque curve and you will see the difference.

Boss 351 · Mar 31, 2004

I'd stay EFI but I don't know why people are saying CFI is hard to start, less power, etc... A 600cfm double pump carb, Edlebrock performer RPM or airgap, and a small cam together will put out more power than a stock EFI setup, even without another cam I am sure the carb setup will give more power than a stock EFI setup.

jones · Mar 31, 2004

Well, am just looking around ebay for a good intake, carb, distrib, ect. If i find a good deal i think i will go a head and switch to carb.

What about using nitrous? Is it better on a carb or injectors ?

Thanks for the comments

Boss 351 · Mar 31, 2004

I'm not sure (don't know anything about N2O) but if you need to add more fuel like you do with boost, a carb will be easier and cheaper to adjust than EFI. Oh and for the distro, make sure it will work with your roller cam because something with the gear, not sure but do a search on here.

Is your car an auto?

ironheart1 · Mar 31, 2004

Going carbed might be more trouble than its worth. Carbs offer easier mixture tuning and adjustment, and often easily provide a more desirable power curve, but for the cost of switching over you could get a new ignition system, fuel pump and perhaps larger injectors. It's all a matter of taste, really.

HaggardGT · Mar 31, 2004

Stick with EFI... why go back in time to a fuel system that is now obsolete? (When I say obsolete, I mean in stock applications.)

BillaMustang · Mar 31, 2004

if you need to pass an emissions test, you'll have to keep that f.i. setup.

Mustang5L5 · Mar 31, 2004

I have an EFI and carbed stang. The EFI stang is a lot easier to play around with

dastang2 · Mar 31, 2004

a lot of carbs cost less than efi intakes alone. the carb intakes are less too. i have an 89 with a carb. it looks way better without the wires. what's all this talk about snappier acceleration with efi. not true, carbs can do the exact same thing except save gas. if you have a sniffer test when you do inspection, carbs can be detuned to pass. and hey, when you want to put a big cam or something of that sort, you don't have to keep getting chips burned to make it run right. for the distibutor, all you need is an 85 mustang duraspark. it has the steel gear for the roller cam. you could rewire a full duraspark ignition system in your car but why would you want to go through that hassle when you could do an HEI conversion for less money and time. i have the info if you want it just email or message me. the fuel tank would need to be dropped so you can bypass the efi pump. then you would need to put an electric pump for a carb. don't waste any money on an aftermarket distibutor because you won't see any power increases.

85_SS_302_Coupe · Mar 31, 2004

I dont get that snappy throttle thing? It's all about tuning. My friend just got an '86 coupe that's mildly built and is EFI, and i've got better throttle response than he does. Sure, it's out dated, but why do you think most of the seriously hardcore racing is done with carbs? It's simple and it makes huge power. Even NASCAR still runs carbs. I'm not ripping on EFI, just stickin up for carbs.

Gearbanger 101 · Mar 31, 2004

Boss 351 said:
I'd stay EFI but I don't know why people are saying CFI is hard to start, less power, etc... A 600cfm double pump carb, Edlebrock performer RPM or airgap, and a small cam together will put out more power than a stock EFI setup, even without another cam I am sure the carb setup will give more power than a stock EFI setup.

You’re kind or comparing apples and oranges there, don't you think. You're basically stating that if you were to upgrade the car with a higher performance aftermarket carb, high flow intake, and cam, that it would make more power than a stock EFI system. That's pretty obvious. Why not compare the high flow carb set up to the Edelbrock EFI package? That would be a little more fair, wouldn't you think? But let's remember the '85 carb'd Stangs made 15 less horsepower in stock form versus 225hp in the '87-up models.

I think he should stick it out with the carbs and keep looking for the EFI gremlins. As stated before you'll always enjoy the snappy throttle response and better torque curve and fuel economy of the EFI in the long run. Sure carbs can be "tuned" to perform, but as soon as the temperature or atmospheric pressure changes, you're back to square one.

Gearbanger 101 · Mar 31, 2004

dastang2 said:
what's all this talk about snappier acceleration with efi. not true, carbs can do the exact same thing except save gas.

Not completely true. Sure carb's can be set up nearly as well as a good running EFI system, but as I stated earlier all that goes out the window when temperature and atmospheric pressure come into play. You're always under the hood jetting and tuning for these things to keep up with the EFI car that does it on it's own. I'd put my car up against any similarly built Carbureted car on a warm balmy night!

dastang2 said:
if you have a sniffer test when you do inspection, carbs can be detuned to pass.

That kind of proves the point doesn't it. You've just stated that in order to keep it emissions friendly, you've got to detune the carb to get it to pass, therefore sacrificing performance. Not the case with the EFI. Just drive in and drive out without pulling the hood.

331 cobra · Mar 31, 2004

85_SS_302_Coupe said:
I dont get that snappy throttle thing? It's all about tuning. My friend just got an '86 coupe that's mildly built and is EFI, and i've got better throttle response than he does. Sure, it's out dated, but why do you think most of the seriously hardcore racing is done with carbs? It's simple and it makes huge power. Even NASCAR still runs carbs. I'm not ripping on EFI, just stickin up for carbs.

Nascar is backwards in a lot of ways. They use carbs because they think a $6,000 Motec system is too expensive. I wonder how many spare carbs each team has?

If EFI were allowed in Nascar, you would see it hit the tracks in days. Pit stops would decrease because they could save a bunch of gas during cautions and drafting. Horsepower would be the same, but engine reliability would go up because the fuel mixture would be more precisely metered.

The teams would love it because it would reduce costs. There would be less gaskets to change, no jets to buy, intake manifold design would improve becase fuel distribution would cease to be a factor. Tuning would be quicker and easier.

Of course this is all compared to $1500 race carbs in nascar. For the average joe, a carb is cheaper initially, but tuning costs will raise the price slightly and the gas bill will make a difference after 15-20,000 miles.

dastang2 · Mar 31, 2004

i meant detune it just for the test and put it back afterwards. but here we have none of that. they don't even look under the hood or at the mufflers

5.0 HOtrain · Mar 31, 2004

I went carbed and dont think I'll be unhappy. I would have had to upgrade all of my 302 parts for the 418 anyway, wich would cost more even though I have a $1000 into intake and carb. One thing no one has mentioned is fuel system. With a carb setup you need more volume than pressure, wich means those tiny stock efi lines gotta go. As for bypassing the stock efi pump, granetelli and moroso both make drop in pickups with -an fittings that go right into you're stock tank. I'm far from an expert, but shoot me an email if you have any further questions. FWIW, I got $250 for my efi harness and computer. mike418w@hotmail.com
Mike.

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=1440&prmenbr=361

5.0 HOtrain · Mar 31, 2004

331 cobra said:
and the gas bill will make a difference after 15-20,000 miles.

I dont know about you, I'm not rich by any means but I built my car because I enjoy it like a hobby. I didnt have this 581hp 418 built to get gas mileage. I love driving the car, when the gauge is empty the friggen thing needs gas, end of story, wether it be 8 or 20 mpg. Just me though.
mike.

85_SS_302_Coupe · Mar 31, 2004

seriously. If you're making big power, you're unlikely to be making big mileage numbers at the same time unless you've got a turbo and you're cruising the hiway. The second you drop the hammer, you're burning gas just as quick as anyone else.

If money were spewing out my rear, i'd probably build a nice EFI car, but since that's highly unlikely, i'll stick to tuning my car regularly and building it for cheaper.

mike keirstead · Mar 31, 2004

I am going to carb as we speak. EFI is a bitch on a budget when you are trying to go fast ALL MOTOR. Tuning is crucial. A carb will make more power usually plus they are fun to dump the big secondaries in on. Just me though. OPINIONS are welcome i hope.

A nice little carb is great for a budget.

Very tired of my injected 5.0, going carbed ? What U think ??

jones

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