I also don't buy one bit that a carb is as efficient as FI. I can look around me at plenty of recently built carb setups, and not a one of them gets near the gas mileage I do, not one of them could keep up with me if I put cam/heads in my car (which they mostly already have).

I raced a THUMPIN 1966 Mustang a while back, had a pretty healthy sounding 302/351 in it that rattled my windows when it went buy and sounded wicked as hell. We got on the highway and I had my 1996 T/A, stock with a homemade CAI and Dynomax muffler. From a 40 punch, he kept right next to me and fell maybe a little behind. Had I had even roller rockers I would have smoked him. I built an edelbrock carbed 350 myself about 6 years ago with pocket ported stock heads, Erson high flow AH cam, RR's, 9:1 compression, Edelbrock performer RPM manifold, Mallory ignition, etc. I could smoke that motor today with my LT1.

If Tanner can run a 9.xx with a FI LT1 6-speed thats enough performance potential for me

But, everyone is different. Good luck on your venture!

 

I really get tired of hearing people say that an carb is by in no way as close to equivalent as an fi or will never run as good as a fi vehicle would.This is not so do to many years of expereince of working with carbs.I also hear this you will loose Hp instead of gaining hp.I believe none of the people in here that bash the carb setups and carbs have probally never seen a carbed car or a carburator at all and do not have any expereince with them.(Maguis231) if you dont think an carbed setup is as efficient as an FI, then why is "(Spraytheway)" running these awsome times of-

60ft 1.48
1/8 6.083
1/8 mph 121.59
1/4 9.08
1/4 mph 159.7

Heres the forum thread .Guys that think that carbs are not as efficient read the Drag racing forum sometime you might find something to read.http://web.camaross.com/forums/showt...hreadid=156810
.Pretty good times for a guy running a carbed Lt1 dont you think so?I do....My buddie Jdblaze has plenty hands on experience with carbs and fi so he know what he is doing.He has 7 other cars some are fi some are not.So He can obviously offset the diffrence between cars.I also love EFI cars aswell thats why I have an LS1.

 

Hey JD I been meaning to ask you a ?I heard that you ran that 6.6 in 102+ Texas Weather. on pump gas .......I'll call your office later on so we can disscuss the deatails on my motor.

 

believe me I have plenty of experience with Carb setups...my 96 T/A was the first FI vehicle I ever tried to modify. I agree, those carb setups are making lots of power. I also agree that the street manners of such a car would be **** poor at best. If FI wasn't as efficient as a good carb setup, car manufacturers would be putting carbs on production cars still...they aren't because as said before, emissions requirements have dictated a cleaner (read: more efficient) running car. A more efficient running car will produce more HP, especially at part throttle positions where carbs have the most problems. Since your pointing fingers at who has no experience with carbs, I submit that perhaps you don't have enough experience with FI operation to realize the benefits. There is a reason some teams are pushing to get FI allowed in NHRA top fuel.

When some guy can Drive a FI Mustang up to a 200 mile away track, bolt some slicks on it and pull a mid 8, then put street tires on it and drive it home, that says a helluva lot about good FI setups.

 

I'm pretty sure that mustang guy you talk about has money coming out his ***. He had to have paid a pretty penny to run them mid 8's EFI.

after buildin some EFI race cars and carb. cars. EFI is a pain in the ***, it has 10000 wires, and they allllllllllll have to be working right. everything on EFI costs major $$$$$$$.

carb cars are too simple, 2 or 3 wires, and make more power with less money. they are tougher, you dont have to worry about a sensor fouling out, making the car run like crap. carb is easy to diagnose. either it works or it dont.

EFI is more effiecient for daily driving of course, because of the 02's monitoring every second, but for going fast in a hurry - CARBURATED!!!!!!!!!!!!!!!

 

This is starting to sound like a Chevy versus Ford debate. What is needed are real numbers from both systems with the same internals (stock would be nice). I am going to search some of the other forums to see what is out there. The technology of carbs, EFI, and the fuel have changed greatly in the past ten or so years. The quality of the gasoline you get today is vastly improved over what was being sold in 1980. They have changed the molecular structure of the gasoline to improve emissions and fuel consumption. Modern carbs running todays fuels perform at a higher level. Makes it hard to compare to vintage numbers.
Dont forget that the LT1 also has computer controlled ignition, this also effects the performance to a great extent, or lack of it on hot days.
With luck I can find some data in the HotRod forums to pass on, or should I say fuel the fire with.


93 M6 Red 59K
Off road pipe, EGR, TBB, B&M Shifter

 

Look Ive heard it all and your submition is only but a guess as to why I know and dont know,beleive me I know enough.Im not trying to cause any wars here I understand theres plenty people of who are running efficient fi streetable cars and track cars just like you stated.My question to you is how well does a carbed car setup have to be as efficient as a fi vehicle?Ive have had several Fi injected vehicles before.I have one still.01 Ls1 that peforms well and is very efficient.One more are we talking about Daily drive street cars or Trailered cars?

 

Factory FI (even tweaked) is no where in the ballpark compared to carb in raw HP and in most numbers up the rpm chart. DFI is a different animal, it can run neck to neck with a tuned carb plus have the drivability of stock FI.

I back this up with years of experience and many dyno cell sessions, not rehashed information I read on the internet.

I get tired of reading all the bashers jump on people's back for doing what they want to do and acting like they are some superior tuner. I've been to quite a few f-body races and trust me people are getting it done both ways.

my humble opinion
tom

 

there is a guy my brother is friends with that runs an 8.64 IN THE 1/4 drives to the track and then drives home ! 1 hour both ways it's a turbo capri fuel injected !

 

If anyone wants to answer the original poster's question, please do.

Otherwise, the carb vs. FI things has been hashed over so many times its boring, and realy has nothing to do with the original question. Just accept that he wants to do it, and if you know the answer to his question, help him. If you don't think putting a carb on an Lt1 makes any sense, drop it an move on to another post.

 

Its really funny how this thread is still rolling. I started it about 4 years ago it seems. The car is looooooooooong gone. I sold it about 2 years ago and used that money to help buy my 30th T/A. I did end up carbing it and it ran just as good as the EFI and looked wayyyyyyyy much nicer under the hood. ALOT cleaner. I never did get a chance to get some performance numbers on it though. About a month after the conversion.........I was having way too much fun with the 6 speed and ended up spinning a rod bearing. thats the worse sound that your car will ever make.