quote:

---

Originally posted by mtbaughs:
Carb'd cars will make more horsepower while EFI cars will make more torque in general.

---

How?....
 

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Posted by mtbaughs (Member # 4052) on :
 
It really depends on how the motors set up. A carb'd motor usually will flow better because the air basically has a straight shot into the motor where as an EFI motor the air usually has to make its way through the inlet pipes than slammed into the back of the intake than into the motor. EFI intakes have come a long way though. If you take two cars that are identical except one is EFI and one is carb'd and place them in a race it is still tough to call. On a road race track I'd say the EFI car would win because of the extra torque coming out of turns, on the drag strip I'd say the carb'd car. There are many other factors to get into as well.
 

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Posted by BOTTLED.LX (Member # 3267) on :
 
alright thanks
 

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Posted by wilit (Member # 3367) on :
 
Carb'd with Weber 48 IDA's. Might be somewhat spendy though
 

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Posted by Black94 5.0 (Member # 655) on :
 

quote:

---

Originally posted by mtbaughs:
It really depends on how the motors set up. A carb'd motor usually will flow better because the air basically has a straight shot into the motor where as an EFI motor the air usually has to make its way through the inlet pipes than slammed into the back of the intake than into the motor. EFI intakes have come a long way though. If you take two cars that are identical except one is EFI and one is carb'd and place them in a race it is still tough to call. On a road race track I'd say the EFI car would win because of the extra torque coming out of turns, on the drag strip I'd say the carb'd car. There are many other factors to get into as well.

---

I know that EFI has a huge driveability advantage due to a way better fuel distribution, quicker cold starts and obviously better gas milege....I can understand that air will pass slower through intake tubes on an EFI equiped engine though....

I could see a slight gain in peak horse power numbers on a carb car, but I think the EFI set up that can control spark and fuel together will always have a broader better horsepower curve....

If you wanna keep it simple and light the carb is the way to go though....
 

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Posted by FAST67 (Member # 4229) on :
 
i personaly like the efi. I had both set ups on my 67 an I like the efi. cause you dont really have to mess around with tuning the carb all thew time. so stick with efi if you already have it
 

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Posted by 66 AC COBRA (Member # 904) on :
 
on an NA motor a c arb will alway make more power

tuning will always be easier on a carb

bur for daily driving u cant beat efi, better gas mileage

if u want max performance then get a carb

but if u want to drive on the street reguarly and want a reliable vehicle, and having the $$$$ to do it, get efi
 

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Posted by mtbaughs (Member # 4052) on :
 
Yep I totally agree. An EFI car will always win hands down when it comes to driveability, gas milage, and cold start up. These being a major reason as to why you don't see carb's around like they used to be. Anyones who's tried to fire up a dead cold carb motor without a choke knows that you have to properly prime the motor and let it run for a bit for it to really wake back up. I think it really comes down to a personal opinion when deciding. I went this way because I could really care less how much gas the car burns, don't mind the slow cold start ups and just like the reduced costs in parts and the clean engine compartment.
 

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Posted by 2stangs69-91 (Member # 1951) on :
 
just for general info. when I was street racing as a young punk LOL back in the mid 80's nobody realy feared small block fords. No efi then. Now it is pretty easy to get them into the 12's and faster. I have to say that a properly tuned EFI system would beat a carb setup at the drags. Because we all know that torque and hp win drag races not just hp

[ March 13, 2004, 03:01 AM: Message edited by: 2stangs69-91 ]
 

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Posted by mustanggt5091 (Member # 444) on :
 
EFI can be a pain in the ass though. I have a complete 351efi setup with PMS I may be ditching for a carb soon
 

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Posted by JohnB (Member # 969) on :
 
If you're broke...
If you wanna keep it cheap...
Don't know what you're doing...
or don't wanna mess with EFI...go carb'd.

If you want something reliable..
A daily driver..
Very easy to maintain...
And works really well...go EFI.
 

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Posted by DropTopFox (Member # 1689) on :
 

quote:

---

Originally posted by Black94 5.0:

quote:

---

Originally posted by mtbaughs:
Carb'd cars will make more horsepower while EFI cars will make more torque in general.

---

How?....

---

Longer runners make for more torque and shorter makes for more horsepower and obviously the carbed being way shorter it would make for more hp and the efi being way longer would make for more torque. Just tghinking about things logically, don't know if I'm 100% correct
 

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Posted by mtbaughs (Member # 4052) on :
 
thats what I was sayin
 

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Posted by Black94 5.0 (Member # 655) on :
 

quote:

---

Originally posted by DropTopFox:

quote:

---

Originally posted by Black94 5.0:

quote:

---

Originally posted by mtbaughs:
Carb'd cars will make more horsepower while EFI cars will make more torque in general.

---

How?....

---

Longer runners make for more torque and shorter makes for more horsepower and obviously the carbed being way shorter it would make for more hp and the efi being way longer would make for more torque. Just tghinking about things logically, don't know if I'm 100% correct

---

That makes sense...Just remember that "peak" horse power is great, but the higher "average" horse power will always be faster...
 

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Posted by mtbaughs (Member # 4052) on :
 
Is that kinda like its not how big you are its how you use it
 

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Posted by Black94 5.0 (Member # 655) on :
 

quote:

---

Originally posted by mtbaughs:
Is that kinda like its not how big you are its how you use it

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It's not the mass it's the motion!...haha
 

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Posted by 66 AC COBRA (Member # 904) on :
 
actually carbs are reversed

think of a high rpm carb intake, like a tunnel ram, the damn thing is over a foot tall, now that isnt that short of an intake

think of it this way, on a carbed motor, if u put a spacer between the carb and the intake, u get more hp but less low end torque
 

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Posted by cobraracer46 (Member # 1142) on :
 
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.
 

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Posted by mustanggt5091 (Member # 444) on :
 

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

hmmmmmmmmmm...... that really doesnt prove that carbs are inferior to EFI but ok. EFI just gives you more tunability than a carb. Thats why for N/A or N20 applications its ok and cheaper to go with a carb, but with boost it is nice to have the tunability of EFI. EFI also has better "street" manners
 

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Posted by Wolfie351 (Member # 651) on :
 
Been driving my carbed 85 for almost 20 years and have never had cold starting or drivability problems. The only thing that sucks is... Carb + smog equipment = PITA ... If you're going naturally aspirated and you don't need smog equipment, carbs are easier, faster and cheaper than EFI. If you think there is any possiblitiy of adding forced induction in the future, EFI is the way to go no question. But, don't buy into all that poor drivability crap regarding carbs. I'll idle all day with any EFI Mustang out there, even with my F303 cam. Fuel mileage? Ok, EFI has that over me
 

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Posted by Wolfie351 (Member # 651) on :
 

quote:

---

Originally posted by 66 AC COBRA:
actually carbs are reversed

think of it this way, on a carbed motor, if u put a spacer between the carb and the intake, u get more hp but less low end torque

---

An open carb spacer adds more plenum volume that kind of acts like a reserve when the engine needs more fuel at air at high RPMs. Which, of course, results in increased hp.

A 4 hole carb spacer would be like adding longer runners and resulting in more torque and less high rpm horsepower.
 

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Posted by yellow67stang (Member # 903) on :
 
lol
 

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Posted by shade- (Member # 298) on :
 
Another vote on the side of carbs for max NA power. To the 281 guy above, have you ever seen what a 427 SOHC motor can do? No? be quiet

EFI is fun and simple and I'd keep it if the car basically has the same function as the factory intended. But if it's NA and it's only power adder is N20, carb all the way baby.
 

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Posted by Chosen1 (Member # 1906) on :
 

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

quote:

---

Originally posted by 66 AC COBRA:
on an NA motor a c arb will alway make more power

tuning will always be easier on a carb

bur for daily driving u cant beat efi, better gas mileage

if u want max performance then get a carb

but if u want to drive on the street reguarly and want a reliable vehicle, and having the $$$$ to do it, get efi

---

tuning a carb is MUCH easier than a computer
 

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Posted by FordPny (Member # 510) on :
 

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

quote:

---

Originally posted by FordPny:

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

Hey does it hurt to have your head stuck that far up your ass?

---

 

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Posted by mustanggt5091 (Member # 444) on :
 

quote:

---

Originally posted by 66 AC COBRA:

quote:

---

Originally posted by FordPny:

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

Hey does it hurt to have your head stuck that far up your ass?

---

---

HAHAHAHAHAHAHAHA......LOL
 

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Posted by cobraman_1994 (Member # 467) on :
 
it depends on your combo and personal preferences imo
 

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Posted by cobraracer46 (Member # 1142) on :
 

quote:

---

Originally posted by shade-:
Another vote on the side of carbs for max NA power. To the 281 guy above, have you ever seen what a 427 SOHC motor can do? No? be quiet Ford never built those old 427 SOHC motors long enough for me to notice how they perform. The boss 429 is a diffrent story, my favorite boss motored mustang is the one SVT engineering and Roush racing put into a 94 Mustang: a 10 liter boss mountain motor with tuned port EFI and distributorles ignition, the result of all that came out to 850 hp and 794 foot pounds of tourque with out nitrous, turbo or blower!!! Once again, the baddest on off street mustang built by ford comes with EFI!

EFI is fun and simple and I'd keep it if the car basically has the same function as the factory intended. But if it's NA and it's only power adder is N20, carb all the way baby.

---

quote:

---

Originally posted by cobraracer46:
Once again, the baddest on off street mustang built by ford comes with EFI!

---

no offense intended, but please, quit digging!

no V10 is 'factory' in any mustang, period.

This motor is the high mark for Ford Factory performance, period.

put the shovel down and click here

[ March 17, 2004, 09:49 AM: Message edited by: shade- ]
 

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Posted by FasterDamnit (Member # 442) on :
 

 

---

Posted by DropTopFox (Member # 1689) on :
 

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

I've seen some stupid fucking posts in my day but by far and away does this one take the cake. Everyone that knows anything in this forum points and laughs at you. Avoid the tech talk section if this is what you plan to post

I believe you are also the same person that recommended not putting a shift kit in a stock automatic tranny...For fuck sake just go buy an import

[ March 17, 2004, 07:16 PM: Message edited by: DropTopFox ]
 

---

Posted by cobraracer46 (Member # 1142) on :
 

quote:

---

Originally posted by DropTopFox:

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

I've seen some stupid fucking posts in my day but by far and away does this one take the cake. Everyone that knows anything in this forum points and laughs at you. Avoid the tech talk section if this is what you plan to post

I believe you are also the same person that recommended not putting a shift kit in a stock automatic tranny...For fuck sake just go buy an import

---

I know a few things about auto tech. If you only knew what I do for a living. Yes, I was the same person who advised people on this board not to install an auto trans SHIT kit and I stand behind that recomndation 100%. Finnally, this whole EFI vs Crab post is nothing more than a simple debate and it looks like some people are taking it a little to seriouly.
 

---

Posted by Black94 5.0 (Member # 655) on :
 

quote:

---

Originally posted by DropTopFox:

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

I've seen some stupid fucking posts in my day but by far and away does this one take the cake. Everyone that knows anything in this forum points and laughs at you. Avoid the tech talk section if this is what you plan to post

I believe you are also the same person that recommended not putting a shift kit in a stock automatic tranny...For fuck sake just go buy an import

---

quote:

---

Originally posted by Black94 5.0:

quote:

---

Originally posted by DropTopFox:

quote:

---

Originally posted by cobraracer46:
EFI is standard on some of the fastest and most powerful mustangs to roll out of the dearborn assembly line: The 2003 Cobra and the 2000 SVT Cobra R, in addition, the fact that some some 99-01 Cobras are running in the 11 second zone with an stock little itty bitty 281 cubed motor proves that EFI is superior to carbs. Face the facts, Carburators are dead just like the 60's dinosaurs that could only go quick in a staight line.

---

I've seen some stupid fucking posts in my day but by far and away does this one take the cake. Everyone that knows anything in this forum points and laughs at you. Avoid the tech talk section if this is what you plan to post

I believe you are also the same person that recommended not putting a shift kit in a stock automatic tranny...For fuck sake just go buy an import

---

DropTopFox~This is a warning...Watch the language and treat others how you would want to be treated...Everyone is intitled to an opinion...This is an EFI vs Carb debate, not a drama post....

---

but that guys right there is one of them auto tech gurus, he can handle it DOH!!!
 

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Posted by season'd 88 (Member # 169) on :
 

quote:

---

Originally posted by shade-:

quote:

---

Originally posted by cobraracer46:
Once again, the baddest on off street mustang built by ford comes with EFI!

---

no offense intended, but please, quit digging!

no V10 is 'factory' in any mustang, period.

This motor is the high mark for Ford Factory performance, period.

put the shovel down and click here

---

Shadetree..at his finest couldent agree more.
 

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Posted by Chosen1 (Member # 1906) on :
 
hey so when does the 3.55 v. 3.73 debate begin?

 

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Posted by DropTopFox (Member # 1689) on :
 

quote:

---

Originally posted by Chosen1:
hey so when does the 3.55 v. 3.73 debate begin?

---

3.55's, my first gear is damn near impossible to launch on street tires
 

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Posted by mtbaughs (Member # 4052) on :
 
3.55's haha lets extend this one
 

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Posted by shade- (Member # 298) on :
 
A 10 liter engine is approx 610 cubes, a 427 is about 7 liters, so I'm curious as to what you're talking about.
 

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Posted by mtbaughs (Member # 4052) on :
 
I luv that car...
 

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Posted by DropTopFox (Member # 1689) on :
 
I like the car but for 610 cubic inches, a 10.55 quarter mile is not that fast at all. I've seen an all motor 306 run in the 10's. This thin has twice the amount of cubes. Oh and BTW, that all motor 306 was carbed
 

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Posted by cobraracer46 (Member # 1142) on :
 

quote:

---

Originally posted by 98 Cobra:
Yep ford made a 610 cubic in v8 LOL.... started out as a 429...

Check it out... it's what that guy is yappin about.

http://www.supercars.net/cars/1994@$Ford@$Mustang%20Boss%2010.0L%20%20Conceptg.html http://www.supercars.net/cars/1994@$Ford@$Mustang%20Boss%2010.0L%20%20Conceptg.html

picture of it...

It's a one off breed

---

If I could have any car of my choice, it would be the boss 10.0 Baddest Mustang Ford ever built!!! Back in 1999, the boss 10.0 ran a 10.55@135 on a full road race suspension with 3.70 rear gears, C6 auto, a full factory interior ( power windows, full leather, power seats) Without nitrous, supercharging or turbo, just 10 liters of displacment, EFI and distributorless ignition making over 850 hp and 794 foot pounds of tourque!!!!try that with a carbed 306

[ March 18, 2004, 11:44 PM: Message edited by: cobraracer46 ]
 

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Posted by DropTopFox (Member # 1689) on :
 

quote:

---

Originally posted by cobraracer46:

quote:

---

Originally posted by 98 Cobra:
Yep ford made a 610 cubic in v8 LOL.... started out as a 429...

Check it out... it's what that guy is yappin about.

http://www.supercars.net/cars/1994@$Ford@$Mustang%20Boss%2010.0L%20%20Conceptg.html http://www.supercars.net/cars/1994@$Ford@$Mustang%20Boss%2010.0L%20%20Conceptg.html

picture of it...

It's a one off breed

---

If I could have any car of my choice, it would be the boss 10.0 Baddest Mustang Ford ever built!!! Back in 1999, the boss 10.0 ran a 10.55@135 on a full road race suspension with 3.70 rear gears, C6 auto, a full factory interior ( power windows, full leather, power seats) Without nitrous, supercharging or turbo, just 10 liters of displacment, EFI and distributorless ignition making over 850 hp and 794 foot pounds of tourque!!!!try that with a carbed 306

---

I'm sure with a Dart Block with very high octane race gas and a whole shit load of compression some major heads intake and cam it could be done. It's all about how much money you are willing to spend. However the amount of research that was put into the Boss will never be reproduced on a carb motor. The parts on the Boss were specially made just for it, show me where you can buy those parts. The carb 306 is actually a feasable idea that can occur. I don't even want to tell you what could be done with just a 427 carbed motor. 66 AC Cobra will show us soon
 

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Posted by 85GT (Member # 1695) on :
 
carb and 3.73

i have had a few EFI mustangs and they were nice but as for tuning and working on them, carb all the way. i just changed my valve cover gaskets, and i did it with my intake and carb on, i'd like to see that done on a EFI car without smoking a pack of cigs lol. i also don't like efi because of all the computer stuff... its a blessing and a curse all at the same time. sure its nice to see a check engine light when your car runs funny because you can pull the codes... versus trial and error on carb... but if its for something stupid and it makes your car run like ass (open loop) then its annoying.
 

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Posted by DropTopFox (Member # 1689) on :
 
In my opinion it matters on the combo for gears really. I don't think rear end gears should be debated over what ratio is better cause it truly is different for ever combo. If I had to pick though it would be 3.55 for better traction and higher trap speeds within the power band. However, gears should be picked after you know what MPH and you plan on trapping at
 

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Posted by talaposa (Member # 2460) on :
 
The carburetor has to proportion the fuel supply by utilizing the flow of air into the engine. It's effectiveness is therefore limited by the cubic inches of the engine.This is a problem not faced by FI units since the computer calculates air fuel ratio. Therefore EFI can effectively use as much CFM as can be applied which is not the case with the carb. The carb, however, produces a cooling effect to the air resulting in a denser mixture which is not the case with port injection. Throttle bodies also produce denser air but have turbulent resrictions to flow due to the position of the injectors. Keep in mind that the minority of FI systems have on the spot programming capability and this is the archilles heel for FI. Chips are a help but to get the maximum from FI the timing and fuel map must be programmable on the spot. My vote is with FI aftermarket units.
 

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Posted by talaposa (Member # 2460) on :
 
I know at least one 454 carburated rat powered model A that has learned due respect for one little FI falcon with a 900 CFM throttle body.

I like the throttle body (I hear the boos already) because of stealth. It looks stock and fits in tight quarters. Best of all, with a few strokes of the keyboard I can dial in any fuel or ignition curve I want.
 

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Posted by shade- (Member # 298) on :
 

quote:

---

Originally posted by talaposa:
The carburetor has to proportion the fuel supply by utilizing the flow of air into the engine. It's effectiveness is therefore limited by the cubic inches of the engine.This is a problem not faced by FI units since the computer calculates air fuel ratio.

---

quote:

---

Originally posted by talaposa:
The carburetor has to proportion the fuel supply by utilizing the flow of air into the engine. It's effectiveness is therefore limited by the cubic inches of the engine.This is a problem not faced by FI units since the computer calculates air fuel ratio. Therefore EFI can effectively use as much CFM as can be applied which is not the case with the carb. The carb, however, produces a cooling effect to the air resulting in a denser mixture which is not the case with port injection. Throttle bodies also produce denser air but have turbulent resrictions to flow due to the position of the injectors. Keep in mind that the minority of FI systems have on the spot programming capability and this is the archilles heel for FI. Chips are a help but to get the maximum from FI the timing and fuel map must be programmable on the spot. My vote is with FI aftermarket units.

---

 

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Posted by 67stang (Member # 549) on :
 
carbed cars have no potential as evident in the pic below:


 

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Posted by Chosen1 (Member # 1906) on :
 
this single carb setup only made 1275 HP on 91 octane



[ March 19, 2004, 09:37 AM: Message edited by: Chosen1 ]
 

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Posted by mustanggt5091 (Member # 444) on :
 

quote:

---

Originally posted by Chosen1:
this single carb setup only made 1275 HP on 91 octane

---

Hahahahaha, I have a complete "aftermarket fuel injection" system and it is really nice. Once you get all the $$$$$$$$$ in tuning equipment to tune it and you learn what the hell you are doing. If you dont have the time to learn or the money to spend, go carbed its way easier and cheaper. As for the gear debate, my vote is 3.55's, thats what I got and IM sticking with them.
 

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Posted by on :
 

 

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Posted by on :
 

 

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