whats the benifit to going carb VS efi

[motownZ]

seen a couple carbed Z;s and want to know the break down

[PACE]

well EFI is the way to go,

[kammi10]

carb is old school when u don;t care about gas mileage and want to tune it really fast or just used to them

[MattODoom]

seen a couple carbed Z;s and want to know the break down

Better question is... what isnt the advantage?

carb is old school when u don;t care about gas mileage and want to tune it really fast or just used to them

And you'll need to tune it really fast because youll be tuning it all the time.

EFI's got better fuel atomization, better throttle response, better transient fueling... better at dealing with weather changes, better fuel economy, better starts, stalls less, yeah you get the point.

[motownZ]

plus i heard its cheaper but with a lot more to deal with

[1BADAIR]

the reason some have gone to carbs on ls1's is due to intake restrictions. A sheet metal intake helps but is 2K$. A single plane intake is 300 but you can still use FI.
Fi has better drivabilty, fuel economy,emissions, but shouldn't see any performance loss over carb's if tuned properly.

[81DaytonaPaceCar]

Better question is... what isnt the advantage?

And you'll need to tune it really fast because youll be tuning it all the time.

EFI's got better fuel atomization, better throttle response, better transient fueling... better at dealing with weather changes, better fuel economy, better starts, stalls less, yeah you get the point.

A couple comments here...

This really is a pretty broad question because so much of it really revolves around ignition and timing rather than carb'd vs. EFI. Modern cars have a much better ignition system than what came on carb'd cars and that makes a huge difference in the debate.

There are very, very few differences between a well tuned carb and EFI...assuming that you've properly set the timing on the carb'd car as well. Don't get me wrong...given all the money in the world, I'd go EFI on everything. But I can get a good carb and intake for $400, instead of $2000 or more for a good EFI setup. And what am I really getting for the other $1600? Not a whole lot.

Timing is THE most important element to an engine. And the carb'd guys can't take it for granted like the computerized EFI guys can (and even that isn't always the case with older factory set computers). And once you've tuned a carb'd car in, you can listen to another carb'd car going by and say "Yep, he's got it right" or "He ain't even close".

At least half of perceived carb problems are timing and/or ignition problems...a very easy and inexpensive fix if something goes wrong. The terms "easy" and "inexpensive" can't be applied to a EFI car.

For bang for the buck, carbs are the way to go.

[MattODoom]

A couple comments here...

This really is a pretty broad question because so much of it really revolves around ignition and timing rather than carb'd vs. EFI. Modern cars have a much better ignition system than what came on carb'd cars and that makes a huge difference in the debate.

There are very, very few differences between a well tuned carb and EFI...assuming that you've properly set the timing on the carb'd car as well. Don't get me wrong...given all the money in the world, I'd go EFI on everything. But I can get a good carb and intake for $400, instead of $2000 or more for a good EFI setup. And what am I really getting for the other $1600? Not a whole lot.

Timing is THE most important element to an engine. And the carb'd guys can't take it for granted like the computerized EFI guys can (and even that isn't always the case with older factory set computers). And once you've tuned a carb'd car in, you can listen to another carb'd car going by and say "Yep, he's got it right" or "He ain't even close".

At least half of perceived carb problems are timing and/or ignition problems...a very easy and inexpensive fix if something goes wrong. The terms "easy" and "inexpensive" can't be applied to a EFI car.

For bang for the buck, carbs are the way to go.

Thats only true in a car that was originally EFI-less. For a car like his Z it will cost him more money to go to a carb. He will need a special box to drive the coil packs, fuel regulator or new pump and lots of other bullshit.

[81DaytonaPaceCar]

Thats only true in a car that was originally EFI-less. For a car like his Z it will cost him more money to go to a carb. He will need a special box to drive the coil packs, fuel regulator or new pump and lots of other bullshit.

That's what makes it a black or white situation.

[WMCCjames]

EFI > Carb.....period.

Dyno tests normally show that comparing a properly tuned EFI set-up and and properly tuned carb, that the EFI set-up will build more torque due to finer fuel and spark control. Of coarse, between the two....the EFI will have much better drivability.

I talked to a guy at superfest that wanted to put a LS1 in his thirdgen but wanted to put a carb on it for simplistic reasons......I said, man you are losing half the benifit from switching to the LS1 if you are going to carb it. Just doesn't seem worth it to me.

[motownZ]

yea saw the episode on HP TV where they had that malibu i think with the LS2 and made it carb for the fact that it was a older car.

man i would love to start a project car like that from a 70's car.

[bmwmcars]

yea saw the episode on HP TV where they had that malibu i think with the LS2 and made it carb for the fact that it was a older car.

man i would love to start a project car like that from a 70's car.

project "blue-hair" or something like that.

fast xim ignition controller. the new versions of which are programmable. lets u run a carb for fuel, and full electronic control on the ignition side.

at the end of the day it all depends on what u want to have.