LT1-LT4 Modifications 1993-97 Gen II Small Block V8

switch to carb

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Old 02-26-2009, 10:40 PM
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Arrow switch to carb

I was wondering what is all involved in switching over to a carb setup on a lt1 is it worth it and is it hard to do
Old 02-26-2009, 11:02 PM
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look at the current record holder he did both and they ran almost the same
Old 02-26-2009, 11:36 PM
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It isn't worth the headache IMO.

I own and race a carbed car,they can be very finnicky. If ur not very good with carb tuning,good luck lol.
Old 02-27-2009, 12:48 AM
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Originally Posted by SHDY 5.7
It isn't worth the headache IMO.

I own and race a carbed car,they can be very finnicky. If ur not very good with carb tuning,good luck lol.
hah I was going to comment on just that, but didn't want to get flamed by my new found Fan Club So I'm glad someone else said it!

If you race at the track a lot, you're going to have to fine tune it almost every time your there to adjust to the different baro pressure and humidity, etc. That is assuming you want to get the most out of it you can, otherwise you really don't have to
Old 02-27-2009, 08:18 AM
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I know a guy who can tune a carb on a V8 just by putting his coffee mug on the air cleaner and watching it.
Old 02-27-2009, 08:30 AM
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Originally Posted by LT1FirebirdSLP
I know a guy who can tune a carb on a V8 just by putting his coffee mug on the air cleaner and watching it.
That seriously sounds like my friend! Hell, I had him tune the carb on my Nitro RC truck that I had! Usually they're "Plug and Play" right out of the box, but mine, not so much. He had that thing ripping around so damn good that when it hit 2nd gear it'd pull the front wheels O_O And then I whacked a pole and needed all new front upper and lower A-Arms and shock tower
Old 02-27-2009, 09:05 AM
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Originally Posted by Formula350
hah I was going to comment on just that, but didn't want to get flamed by my new found Fan Club So I'm glad someone else said it!

If you race at the track a lot, you're going to have to fine tune it almost every time your there to adjust to the different baro pressure and humidity, etc. That is assuming you want to get the most out of it you can, otherwise you really don't have to
Yep. Like I said,unless he is good at carb tuning or has someone that is,its a headache.

He can run a carb right out of the box but I never seen a point. U can find a lot more by tuning.
Old 02-27-2009, 03:06 PM
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I didnt know it was tht much of a PITA. Most people say they go carb because of simplicity
Old 02-27-2009, 04:02 PM
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Originally Posted by $O$OE
I didnt know it was tht much of a PITA. Most people say they go carb because of simplicity
The thing with carbs( besides the obvious backwards move in technology)
weather conditions do change so of course you will have to change the settings on the carb,timing etc. fortunately we have IAT,MAF,TPS,IAC,CTS etc. to help make these changes. There will always be a debate between the two but modern technology takes the cake
Old 02-27-2009, 05:09 PM
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The thing with carbs( besides the obvious backwards move in technology
I have to disagree for a track car. Most EFI stuff isn't too successful at the faster levels.

screming, what are your intentions for how you are going to use the car?
Old 02-27-2009, 07:40 PM
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theres a reason actual drag cars run carbs.
but that being said. **** a carb.lol
Old 02-27-2009, 08:30 PM
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i would not say what i said if the car was a dedicated race car. there was no indication OP was intending on a track only car. still carbs had their day!
Old 02-27-2009, 10:28 PM
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planed on a big cam forged bottom end and still have a "streetable car"
Old 02-27-2009, 11:34 PM
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go fuel inj.
Old 02-28-2009, 07:59 AM
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Originally Posted by screming_z28_95
planed on a big cam forged bottom end and still have a "streetable car"
There's not that much difference in performance between the two and fuel injection will be a lot more streetable.
Old 02-28-2009, 07:59 AM
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Originally Posted by screming_z28_95
planed on a big cam forged bottom end and still have a "streetable car"

Then a carb is completely assbackwards.

In racing if a class does not use injection it is VERY often because it is against the rules.

On anything based on actual street cars injection is seen as an advantage.

There are folks who can make carbs work wonderfully, and folks who make injection work wonderfully and idiots who can't figure one out so they curse it and praise the other. But the intelligent guys who are good with carbs are still going to tell you injection for the street. With all the feedback systems the computer has a carb just can not match it in changing conditions. On a racecar someone good with a carb can quickly readjust them so that is not such a big deal on a racecar, but on a streetcar is a hassle.
Old 02-28-2009, 09:23 AM
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Originally Posted by lifeisgood
theres a reason actual drag cars run carbs.
but that being said. **** a carb.lol
That would be called RULES. Warren Johnson has been arguing to allow fuel injection for years. Top Fuelers run mechanical fuel injection, although it's not a continuous feedback system.

The statement that there is more power to be had with a carb is false. The OP WILL NOT be anywhere near power levels that EFI will be a conern as far as cost or effectiveness.

To me it would be a VERY poor decision, but I am not afraid of technology.
Old 02-28-2009, 09:46 AM
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U can find the same power levels with efi then u can with a carb!

My challenger is a 9.60 car,with my carb set up street driving is horrid,it is set to make the most power I possibly can.

U do not see these "race cars" that are carburated out buzzing the street. My mopar is now going to a F A S T setup for this year,which was advised by my chassis builder and engine builder.

OP,save ur self the time and stay efi. Just spend ur money on a good tune and u won't be sorry.
Old 02-28-2009, 02:55 PM
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Carbs are simple to tune, but it is a step backwards! Its not as efficient as fuel injection, which is why everything went mpfi. Fuel injection does not add power in most applications, but does offer more efficient fuel delivery to the engine. I would say stick with what you have unless your tryin to make 600 plus hp na, then maybe a carb or a accel dfi system should be considered.



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