which is better fi or carb?
which is better fi or carb?
Just got a new project 92 RS im swaping to a 350 but confused on which is better in the long run Fuel Injected or Carb? let me know and why your choice is better ive heard good and bad things about both..
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
There are a lot of "depends" (with a small "d") in answering a question like this.
Such as, "depends" upon how you intend to use the car.
And, "depends" on what you are willing to sacrifice (such as economy for up-front costs).
And, "depends" upon the engine itself, such as what cam it has (may not be compatible with EFI but would work with carb).
Personally, it makes sense to me to build around what you've got. 9 times out of 10, that will be the only legal path, anyway. You've got a '92, so no carb is street legal in any of the 50 United States (Federal law, local/state law is irrelevant).
Another "depends" is how much up-front budget you have. It could be argued that an LS1 take-out is the best long-run choice possible, but the up-front costs and labor intensity will be much higher than a Gen I SBC choice.
Such as, "depends" upon how you intend to use the car.
And, "depends" on what you are willing to sacrifice (such as economy for up-front costs).
And, "depends" upon the engine itself, such as what cam it has (may not be compatible with EFI but would work with carb).
Personally, it makes sense to me to build around what you've got. 9 times out of 10, that will be the only legal path, anyway. You've got a '92, so no carb is street legal in any of the 50 United States (Federal law, local/state law is irrelevant).
Another "depends" is how much up-front budget you have. It could be argued that an LS1 take-out is the best long-run choice possible, but the up-front costs and labor intensity will be much higher than a Gen I SBC choice.
Last edited by five7kid; Nov 11, 2009 at 04:01 PM.
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: which is better fi or carb?
I think in the end, most of us NOT drag racing swap to carb so we don't have to fool with the chip programming required to keep the EFI. Although better than it was, there's still alot to learn, and do, and buy to keep the EFI on any kind of modified engine setup. And if you can't figure it out youeself, then it's hard to find anyone to program chips for you. Granted TPI systems have more programmers available out there than the TBI systems - but I still think most of us swapped to carb 'cause it's easy, hands on mechanical adjustments for modified engines rather than more time spent in front of a PC.
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From: Englewood, CO
Car: 1990 Trans Am
Engine: Lb9
Transmission: factory T5
Axle/Gears: 3.08 limited slip
Re: which is better fi or carb?

Outside of that, it depends on what youre more comfortable with working on (or learning) and what you really want out of it. Personally Id much rather figure out chip programming than tune carbs but that's just my opinion. There is no clean cut x is better than y, it depends on you (and emissions lol).
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From: Menno, SD
Car: 1991 Z28 Camaro
Engine: 355 sbc
Transmission: 700r4
Axle/Gears: 4.10
Re: which is better fi or carb?
personally i prefer fuel injected, its more expensive to get up and going, but in the long run if you get the right stuff your not really limited with what you can do
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