LS1SS4ever

I am ready to start. I have all component are needed for carb. and also for injector. Just want to know which one is useful for daily driver and less problems? I want to know the right choice, so I will sale the other kit to my friend.

luckyhenriksen

iTrader: (1)

injection would be more reliable

Shawn MacAnanny

iTrader: (12)

I vote for injection for reliability as well provided you can get a GOOD tune there.

RE AND CHERYL

iTrader: (31)

This is honestly not even worth talking about. If you have the parts and the ability to set up the FI I would not give it a second thought. Carbs are for lawn mowers.

Re'

LS1SS4ever

Do both produce approx. same power (hp) with same mods?
Which one will give more?

Pop N Wood

iTrader: (1)

FI will make for a better balanced daily driver.

If set up right, carb and FI will produce the same overall power. However on our motors the carb set up is good for some added HP at high RPM. Probably has more to do with the open plenum intake manifold than the actual metering device.

Less problems, hard to say. A lot more complexity in a FI system, more stuff to go wrong. But most FI systems seem to be pretty reliable. Just expensive to fix when they do wear out.

FI tends to make the engine live longer, especially if you live in a cold weather area. Carbs do a poor job metering fuel when cold. This results in more gas blowing by into the oil and shortening engine life. FI motors live a lot longer than the old carb'd stuff.

This topic has really been beat to death. For some reason people tend to take it personally, so expect a lot of less than helpful opinions on the subject. Not sure why people get so emotional about a purely technical issue. Do a search will save a lot of argument.

Qwiknotch

The problem is with people making comments like carbs are for lawn mowers. Ignorance is bliss, I guess. I have been building fuel injected and carb engines for over 20 years and I can tell you that it's apples to apples. Depends on what you know and how well you can tune. Overall hp will lean towards the carbs, even with a converted open plenum intake on a fuel injected application. The fuel injected will have a flatter torque curve (generally speaking) cam designs, timing, port designs are completely different from carb to f/i.

Personally, I like carb over fuel injection in a naturally aspirated and nitrous application and injection for turbo and superchargers.

As far as reliability, I had a 1990 Saleen (sold to a friend) I removed the fuel injection and put a carb on it. That little 302 carb engine got 20mpg and has over 200k on the odometer. My buddy still drives it everyday.

1974Nova

I just don't understand the point of going to an LSx motor if you're just going to wind up throwing a carb on top of it. I won't diss carbed cars at all, they can make great power. But why do the swap if you want a carb motor?

holley505

iTrader: (1)

DEAD HORSE TOPIC...

but nothing wrong with a CARB ON A LSX...in fact more and more people are doing it.

I agree with comment above... if you wanna run N/A or No2

Turbo or S/C run the FI .... even tough you could run a carb.

I like the carb setups for older cars that are not FI ... still give it the old school looks and great for conversion. Plus no expensive harness and high pressure fuel system... not to mention you can pick up motor and sell the computer, injection setup and fuel system.... to easily pay for the carb, intake and MSD controller.

I ran my carbed 346 for 2 years.... ran awesome... 12.0 @114

now I am going to a carbed 418 LSX... should go low 11s high 10s

BTW... I drive 30 miles each way to the track !!!

holley505

iTrader: (1)

as far as power.... most people tend to say the carb makes more power...
BTW look at pro stock they run less than 500 ci and carbs...


FI gives better full mileage at part throttle. But you will need tuning. And if you live up North with winter... I would say FI

LS1SS4ever

The car will be bolt ons + cam & I am in hot weather.

holley505

iTrader: (1)

auto? with stall... then go carb

holley505

iTrader: (1)

http://s243.photobucket.com/albums/f...t=MVI_6167.flv

Shawn MacAnanny

iTrader: (12)

Carb if you dont mind a slight loss in driveabiliy. I've owned both (465rwhp 01 Zo6 and my current 420ish rwhp setup) with large cams and EFI is always going to be better driveability wise but i have no problem driving my carbed setup to and from work which is 30 minutes each way. I dont think you'll gain any top end power with EFI though. Carbs deliver colder fuel with less intake restriction which is always going to give them the slight advantage.




I know, poor car... I'm more for functionality than style. 2820lbs dry with all steel pannels, fits 30"x14" MT ET street radials and 4.56s which are more than enough to pull the front wheels

LS1SS4ever

Its auto 700r4 with stock stall. Maybe in the future I change the stall.
How can I loss in driveabiliy with carb?

holley505

iTrader: (1)

cold starts... really. with a MSD box and decent carb. it will run great. I never had problems.

Shawn MacAnanny

iTrader: (12)

I've started mine at about 22 degrees. Had to give keep it revved to about 1000rpm for about 5 seconds before it would idle. My engine idles at 750 so cold starts with a larger cam at that rpm are a little tempermental the first few seconds. The driveability really isnt bad at all honestly. I'd take anyone local for a ride in mine who thought otherwise.

726.0chevelle

iTrader: (17)

go with fuel injection nothin like cold starting a carbed car however carbed would be cheaper

LS1SS4ever

If it is better driver, same power produce, whay some of them go to carb?

Shawn MacAnanny

iTrader: (12)

Its alot simpler of a system. It's really not much cheaper. Maybe $600 more to go with EFI. I had everything with my engine to run EFI i sold it all to run carbureted. Its just something different.