Like it says, will a carbed LS1 fit under a stock hood? I'm sure there's variables such as what air cleaner are used, but I was looking for anyone with experience.

Thanks,
Boob

 

with a rpm intake yes, but dont expect an air filter.
with a gm intake.... maybe.
dont even think about a vic jr.
plan on a hood. best i can say.

 

I 2nd that

 

The stock LS1 with the FI will fit perfectly under the hood I say keep the motor as GM intended

 

GM makes a carb intake for the lsx motors! I think GM intended this motor to be badass EFI or CARBED

 

The GM carb intake is junk the Victor Jr. is a better carb intake for it. However you could have the best of both worlds, take a Victor Jr. and have it done up for the fuel rails and injectors and put a bit 1150 CFM TB on top

 

ive seen both intakes flowed, and i personally own both.
i can sit them side by side and you will say the edelbrock is junk.
the GM piece is a fit and finished deal all the way around.
i got my edeljunk and thought i was gonna cut myself when i got it out of the box.
the casting differences are insane.
i ported the intake for a bit of extra flow, and had to have some major plenum work done by my porter becuase the plenum was not equal(squared)
no doubt the victor outdoes the GM above 6K, but it is a really nice piece.

 

If I order a sunoco hood from hawks, will I be able to keep the front acessories and brackets if the 6.0 liter is from a truck or do I still have to change to the brackets and acessories from a f body?

 

i want to do a carbed ls1 from a 6.0 truck motor. Will i be able to use the front acessories and brackets from the truck if i use a sunoco hood from hawks, or do i still need to change the accesories and brackets from an fbody ls1.
Thanks

 

never even heard of a carb'd LS1 till now

 

you been under a rock?

 

Really? do you live under a rock? lol

 

ahem....i believe but correct me if i'm wrong but all the cool fast ls based motor guys have carbs. TJ what you think?

 

if you are just talking 3rd gens maybe. but most 4th gens are f i . and i have seen them in the low 8 and in the 7's.

 

ya all the boosted cars sure. In a side by side comparison the carb makes more power comparing apples to apples. Scary but true.

 

dont know about that. i have been around them an awful lot. i will take and fi ls1 over a carbed ls1. and i bet i will win most of the time IF it is tuned and built correctly.
tell you what. if they were set up exactly the same and tuned correctly i bety the fi would win at least 80% of the time.

 

carb has been proven to make more peak hp while the fuel injection gives better low end torque.

some folks are all about efi, others are about the carb.
i choose to go with what i have been brought up with and know.
not fimiliar with efi. its cheaper and easier for me to change a jet than it is to fool with a keyboard.
besides... it aint fun unless you are getting dirty.

 

ahem, i'm going to put this nicely since you don't know any better but your ideals are completely wrong from a max power tune comparing apples to apples. Perhaps one of the top carb builders in the country can explain why:

http://www.pro-system.com/scoop92102.html

 

i can tune metered fuel leaks with a quarter, 5/16" wrench and a box of jets for $39, ask me how!

 

All things being equal, he's right. But, as he said, they are not equal.

A carb equipped 5th gen Camaro v6 could not get 304 hp on 87 octane. It would be a bomb.
Another example: Top Fuel has the quickest cars on Earth and they run carbs. However, they could go faster with DFI and increased compression running 100% nitromethane; a setup that a carb wouldn't allow.

 

you know we can argue the point to death. whether forced induction or naturally aspirated. most of the fastest ls series engines are fuel injected. i dont care what a carb builder says at all. i believe in what i see oon the street and at the track. we arent building sprint cup cars-no salt flat cars-and no pro stock cars. fuel injection on an ls series engine will win out over carb any day.

 

Top fuelers are not carburated. They use a fuel injection, but it isnt like anything available on production cars.

And, what do the carbed LS1 pull down for mileage?

 

Come on bro, since they come EFI from the factory you cannot argue that point. It isnt like half the LS owners in the world are going carbed, so that is not a just argument.

 

i didnt start it. its a fact. the fastest are fuel injected. period!!!!!!!!!!!!!!!

 

its all apples and oranges. i dont know why it gets brought up.
efi will get better milage in most cases.

 

hmmm that sound like a challenge

anyone.....

I would love to build a carbed LS1 and run it in 92. in fact if i had to do it all over, instead of putting in my stroker, i would have gone the carbed ls1 route

but anyways, will a carbed LS1 fit under a STOCK hood, probably not. best bet is to go aftermarket, good luck

 

Forced induction with a carb will make more power than a EFI with forced induction, sure there will be someone out there that has proven it, the denser air charge from the carb promotes less detonation as well, meaning more boost...more power. If you argue that, you dont know much about FI.

 

well if you are really good with carb tuning and timing curves, with the proper cam choice you can run your motor leaner than the 14.7:1 that an efi motor tunes for, so in theory you could get better mileage. I haven't messed with mine much but as long as the vacuum reading is higher than my power valve I have it tuned into the low 14:1 readings, so it isn't that much off. But lets be honest here, 4.11 gears, a 3 speed and the cam profiles I choose have nothing to do with mpg in mind.

 

Exactly. I like the FI for the mileage, and the ability of the engine to save itself from harm, automatically. Plus I couldnt bring myself to upgrade to the newest engine platform, then take a 20 year leap backward and carb it.

But thats me. I know some guys like the looks of the carbs, and they are cheaper. A nice built 900 cfm carb is about the same as some aftermarket intakes. Then a FI car needs injectors, and a TB to boot.

 

How is that? A rev limiter? The 6010 MSD ignition has that build into it so i hope you dont mean that.

Then if you want you can break down how much you spend on sensors and what not when they go out of O2 sims and having someone else tune the EFI when you can do a carb yourself, the cost comparison is not even on the same page.

 

Tune car myself, 176k on an LS1 with all the sensors still original (including O2s) and the fact that you can tweak EFI a whole lot more than screwing in a screw just by tapping keys on a keyboard, there is a cost comparison.

Actually the cost comparison is this, purchase then carb intake + carb + MSD setup equals out more than having someone tune the car, since most will retune it after changes made. The EFI setup is more forgiving on what type of gas (although it should be 93 octane) with the knock sensors and will retard the timing to prevent detonation

not to mention just like DrummerDad said, putting 50 year old technology on an engine that is the most modern piece of equipment is a big step backwards.

Plus there are plenty of people running 8s and 9s on a FI motor, even LT1s.....and not forced induction motors either.

 

Purely my personal opinion, but while you're putting a carb on your Gen III engine, why not convert from roller lifters to flat tappet, electronic ignition to points, radial tires to bias ply, synthetic oil to petroleum based (make it API SD while you're at it), remove the oil filter, and fab up an oil bath air cleaner. Shoot, forget aluminum heads and block and get cast iron pieces, too (with soft exhaust seats and valves so you have to use leaded fuel).

 

Im no expert, but im assuming the newer ECMs have a "limp home" mode. Bad gas, a faulty plug or wire, etc.. How many things can go wrong on an engine? A carbed car just stumbles, and dies. Not to mention the nightmare in warming the engine up in real cold weather, if the carb you buy even has a choke.


Look, Ive had carbed engines. Ive had dual carbed engines. Ill stick with my fuel injection. I know if they are adjusted right, they can perform well, even as well as fuel injection. But usually, they dont.

And I might have to play guessing games when its time to troubleshoot, but its trouble Im willing to live with if I can pull down 28 mpg. And its nothing that a computer, and some software cant fix.

 

Goes both ways, i tune my own carb, but between software to tune, all of the injection system and harness out weighs the cost of a carb, intake and msd box for me. Not to mention, you need bigger injectors when you up the power allot, i just screw in a new set of jets.

As far as 8 and 9s on FI, the carbs did it first a long time ago so there is no arguement there. The FI is great and i am in no way bashing, but my 89 is carbed and will always be as it is my toy and my work horse truck is fuel injected.

As for cold starts, mine is fine and i remove the chokes.

 

The carb setup for most of us is because we are on a budget, so all the you just listed would cost more, even though you are just playing that was a rater meaningless statement.

 

man. top fuel funny cars are about the fastest on earth. NO CARBS!!!!!! fi will always prevail.

 

Mechanical injection isnt the same as EFI

Any when the jets max out you buy new ones. When the carb isnt big enough anymore you buy a new one. Having injectors upgraded or resized is a small issue, you just cant do it yourself with a screwdriver

 

wow i think this is plain funny actually.this wasnt about if carbs are easy. the satement was carbs on an ls1 are faster and make mnore power. no true! then it went to carbs over fuel injection. no way. still most of the fastest are fi. i believe most of the satements are fi. which is fuel injection. that is what i was saying. whether mechanical or efi. fi will make the most power always.

 

I run a 750 on my stock motors and jet and tune them down, no issues, then i jet and tune them up for the ****** engines, so no, you just need acarb that is a happy medium. Guess there is more to carbs than you think?


That is straight up incorrect, but whatever you think. I have seen time and time again and that is like sating tuned port injection will make as much power as a LS1 injection....nope, not without changing the plenum and then it is nothing like ti was.

 

this thread is hilarious.
each have there own place in the world.
a carb is NOT a step backwards, its just a different approach.

some folks like leather, other people prefer cloth.
always something to argue about on the net.
ha!

 

World fastest All Motor car is Fuel injected......

http://www.carcraft.com/featuredvehi...out/index.html

And so is the worlds fastest LSx powered car. Mike Moran uses FI also. End of argument.


http://www.hotrod.com/featuredvehicl...aro/index.html

 

Thanks you, could not be said better.

 

why have that old thirdgen when you can have the new fifth gen?


I don't know of a single part besides the jets on my billet custom carb that was on a factory motor from the days of points. Also I'll keep my bias plys thank you

Either way they each have their place, I'm just happy every now and then to ruffle some feathers with my "old school" technology. I'm glad we're on a thirdgen site where 90% of the members are running tpi based cars and complaining to me about adding technology and then gasp stepping back in time. I like my stone age technology.

 

Let me start by saying I used to drink the fuel injected cool aid also. I have built both, I worked for Texas Turbo who led country in late model fuel injected technology in mid 90's. I also worked for Motorsport Technologies who led the LT1 and LS1 technology in the late 90's. I respect fuel injection but no longer do I bow down to the alter of the fuel injected "gods" who say they can tune my junk.

That being said I plan on building an LS1 third gen with a turbo and a blow through carb set up. Now let me explain why.

This picture below is not 50 year old technology this is less than 6 month old technology. I have personally used this carb and can tell you it fires a up on a 15:1 small block quicker and easier than a fuel injected set up would. This technology below will start up in mid 30 degree Houston winter weather and never hesitate or stumble and needs ZERO warm up time. I understand that this technology is expensive but you get what you pay for and this is the best.


If you take the cost of this carb. $1200 set up for your motor
then take the cost of the intake $350 gm ls1 intake
then take the cost of the msd $385 runs all 8 coils
don't forget the bonnet $80 instead of air cleaner
total $2015 plus tax and or shiping

now lets compare a fuel injection ls1 set up that will handle 1000 hp like the above setup

160 lb injectors $800
fast intake $900
holley ls1 tb $525
fuel rails $200
hp tuner $500
total $2925

Before you say it I'm comparing new to new I'm sure everyone on here can find all the fi stuff used for alot less.

Ok so I'm going to save about a grand on parts, I have newer technology that in my opinion is more reliable than faulty electrical parts like map sensors or injectors and I don't really have to run an intercooler because when the fuel mixes in a blow through set up it cools the air charge like a cooling tower you see outside of a large building.

The biggest deal to me is I don't have to depend on someone else to tune my car. IF I need gaskets for that new sv1 technology I simply go to Autozone or any parts house in town.

You can make you case either way but in my opinion the more reliable and cost effective set up is a Pro Systems SV1 carb on a super cool LS1 motor.

The funniest part of this entire thread is that the one who is arguing the most for fuel injection and new technology is running technology that was designed over 20 years ago. Yeah LT1 now thats an antique. Hell LS1 is almost 15 years old. The latest SBC technology is in NASCAR Cup motors.

 

Oh yeah I forgot to mention I know Jud. They tested a carb setup on his combination and it made the same power. He runs the injected setup because of the forward facing inlet.

He recently went mid 8's after changing to a liberty transmission.

NMCA and NMRA hot street naturally asp. cars have been running that fast for about the last 6 years or so. Thats with first gen ford and chevy small block technology and carbs. The SAM car is basically running the LSX version of "hotstreet"

 

i suppose we could say that both are fast. i have built many of both. all of my fi experience was in the lsx world. i have seen carbed ones as well as fi ones dip into the 6-7- and 8 seconds. the majority of them were fi. whether it be by preference or not thats how it was. and the fastest ones are fuel injected. i didnt say a carb couldnt make power or be fast. i was just stating that fi is on the fastest cars in the world. which to me should speak for itself. that carb above is about the neatest one i have seen. just wish i had the money to use one of those.

oh yeah. the fi is off mine and it is carbed.

who is the one arguing on fi that has lt1 technology.

and i do feel for the ones that have to get there cars tuned. that was how i started with my 99 silvy. then by the time i got my 12 second 02 ext silvy i was tuning it by myself. i was taught by a very reputable tuner. i can tell you that i spent countless hours tuning mine. including an 8 hour dyno session for the nos. i think that is why a lot get away from it. if you can tune it and are good at it then you have a good thing going. if you cant then you are trusting someone else. and for sure they arent going to pushn it to the edge. booth are good. and the fact that fi can get expensive is another matter. also fi is easier when it is set up. it does it for you. im carbed on a stock 305 now. and my vortec 355 will also be carbed. then to some the fi is easier since they dont want to tinker with jets-power valves-discharge nozzles and some tweaking.

 

Klortho's signature says LT1 in it.

It's true the fastest LSX cars in world are FI. Its kind of a monkey see monkey do thing.

Most of the fastest heads up racers in the country are carbed. Outlaw 10.5 and true 10.5 classes see a majority of cars running multiple carbs. Tim Lynch is the exception to the rule and has the fastest outlaw 10.5 car in the world (4.20 at 186)

That being said the winner of "Drag week 2007" is a big block camaro with a procharger and blow through carb. The car ran mid to high 7 second times in the most grueling dragrace challenge ever.

If you don't know the rules each contestant has to DRIVE their car not tow it to 5 different drag strips in one week (1000 miles of total driving) and make at least one pass at each stop. Here's a promo video the winner of 2007 is the black back halved first gen at the start of the clip. (there is also a nice 3rd gen launch)
http://www.youtube.com/watch?v=KhcvS...eature=channel

The blow through technology is newer than the FI technology and people tend to build what they know or see these days.

I think we will see more people setting records with blow through technology in the years to come with pieces like the SV1 from Pro Systems. They now have an SV1 that flows 2500 cfm with one carb. I can see it now big block chevy 632 with two of those carbs and two 90mm turbos on pure meth makes 4000 hp. without an intercooler.

Again most people build what they see and what they are SOLD so saying one is better because more people use it doesn't always hold water.

 

thats understandable. i do understand that some of the fastest cars are carbed. but the fastest of all are fi. top fuel will always hold that title. not sure on the monkey see monkey do thing on the fi side. more preference imho. hell both are fast. i was just making a point to a statement. fastest lsx is fi.

 

ok, since thats all settled, lets see the carb'd ls1 under the stock hood.

 

I don't think it will fit. Unless its a formula hood and you use a bonnet with a conical air filter.


ps. Top fuel cars use a mechanical fuel injection that runs at 1900psi. Its not really the same thing. The system does not monitor absolute pressure vs manifold pressure and exhaust gasses. The crew chief sets up a tune up and thats what the car runs with. Although he can change the tune up in the staging lanes the car goes down track never adjusting to conditions it just goes or it doesn't go. You can't really compare it to todays aftermarket or stock FI systems.