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deputydog
04-16-2006, 10:30 AM
Since i'm still working on my chassis, my mind keeps thinking of different engine combos.

Chris, Have you ever thought about a N/A LS1 with a carburetor? What would the possibilities be of a 414ci, AFR/LS6 or C5R headed motor, 15 to 1,solid roller, dominator type of combo? No one has this combo but I'm thinking 800+ is feasible.
Chris Uratchko
04-16-2006, 10:36 AM
Absolutely! I think with the right stuff, you could approach 900 with that cubic inch.
deputydog
04-16-2006, 11:20 AM
Thanks, I'm seriously thinking of going this route. Besides the HP, it would be cool to have something out there that not many people are running.
Scott McMullen
04-16-2006, 04:36 PM
Please Build It That is My dream Engine :)
LOnSLO
04-18-2006, 12:47 PM
There are several folks running similar combos, myself included. My basic combo consists of 414ci, C5R heads, 15.5:1 custom intake, 5 speed trans. This is in a '02 Camaro
deputydog
04-18-2006, 03:02 PM
I have not seen one LS1 style motor (carburated) with a dominator on it running N/A or on the bottle.

Chris, If you dont mind I might give you a call and bounce a few things off you. I cant go the C5R route right know but here is a little of my plan.


422ci (4.030x4.125)
Iron 6.0 block (there are several mods that can be done to make them stronger)
15.5 to1
aluminum rod
heavily worked LS6 heads or the ET heads
GMPP/Edelbrock intake
Dominator carb
Solid roller

I'm thinking with my 2900lb,25.2 chassis/ladder bar/28x10.5 car when the bugs are worked out I should be able to run in the 950-930 range with automatic.

I lost interest in the car for awhile but this LS1 thing has got me going again.
LTLHOMER
04-18-2006, 06:10 PM
The winner of the outlaw class for last friday's head ups event was an n/a ls1 with ported ls6 heads and a 5-speed liberty. 9.3's at 147 or so. Think the car is around 3150 lbs race.

There's also an n/a ls1 in chicago going 8.9's with a th400 at 3000 lbs stock suspension but I believe he was running c5r heads and was in the 430+ cubic inch range...1.2 60fts off the footbrake pretty sweet. Pewter firehawk owner goes by CAMNHWK on chitown racing...believe his name is Tom.

And then the SAM n/a ls1 which has gone low 9's I believe out of Texas.
81 olds
04-18-2006, 06:21 PM
where can I get some info on the ls engines ? I'm in the earily stages of planing my next build and one these enignes might be an option
deputydog
04-18-2006, 06:31 PM
THESE ARE FUEL INJECTED...................... I'M TALKING CARBURETED. I am well aware of these cars and I know more about Matt's car than he knows I know.

Please show me one of these many carbureted LS1 cars that are in the 9's.
LTLHOMER
04-18-2006, 10:02 PM
THESE ARE FUEL INJECTED...................... I'M TALKING CARBURETED. I am well aware of these cars and I know more about Matt's car than he knows I know.

Please show me one of these many carbureted LS1 cars that are in the 9's.

Fuel is fuel...hell throw carbs on any of those cars and they'd probably make a little more steam from what I understand about carbs vs injection.

They all use carb-style intakes so I don't think it much matters...
Chris Uratchko
04-18-2006, 10:19 PM
Well - The intake is a consideration... that intake from Edelbrock is more of a street piece than a max effort deal. The intake is going to hurt the carb piece. I'd recommend a sheetmetal intake for a carb if the rules are not in the way.
Jay Allen
04-19-2006, 12:10 AM
The carb stuff is so new that no one has really done a max effort yet. I have on pretty good authority that GM Performance is going to be offering several crate engines soon. Carb'ed LS-x stuff.

Problem is, this stuff ain't cheap!
LTLHOMER
04-19-2006, 01:56 AM
I think Jay has the best point...is a max effort ls1 going to be worth building over a similarly priced regular sbc/sbf? Because in the end, it's cool to have an ls1 but it's cooler to be in the winning circle.

I'm sure once Chris builds a few badass ones, he'll be able to tell us if the ls1 is the cheaper route to going fast or if the good 'ol sbc/sbf stuff will still be king. I have an ls1, but I don't think it can be compared to the other top of the line small-block stuff yet and maybe never will...got a lot of catching up to do!
Nick@VictoryRacing
04-19-2006, 05:55 PM
Another situation to consider with the idea of a carb style manifold on the LS1 has much to due with cylinder head selection. The ET's for example are so damn efficient that they are actually sucking most manifolds dry with larger (400+)engines. This applies for most of your composite widely used manifolds, FAST, LS6, etc.

TPIS has a manifold that located the injector higher in the runner for better postition and distribution of fuel, and it also has a larger plenum than the GMPP or Edelbrock piece. I know this topic is about carb'd LS1s and to be honest I don't know of any that are in the 9's with a carb type set-up, but it certainly isn't for lack of technology.

One of our customers cars in particular that weighs 3400lb and is a 6 speed car has a similar size engine, 4.030x4.125 but with steel rods and it is fuel injected. Car still has factory style suspension and cuts 1.3x short times in route to a 9.71@139mph. This car uses a 90mm throttle body with a sheet metal intake. The thought came to switch to a carb style manifold and carb but we decided against it. This car makes roughly 750hp at the flywheel given the chassis dyno numbers. With a few more tricks, more efficient chassis, and a lighter car I have no doubt this car would be well in the 8's.

I'd like to see something like this come together with a carb, would be a very competitive combo to beat in my opinion.
85Camaro
04-19-2006, 06:14 PM
where can I get some info on the ls engines ? I'm in the earily stages of planing my next build and one these enignes might be an option

www.stenodracing.com (http://www.stenodracing.com) !!!! :-D

There is just one catch you have to buy some hair driers!!!:cool:
81 olds
04-19-2006, 06:40 PM
www.stenodracing.com (http://www.stenodracing.com) !!!! :-D

There is just one catch you have to buy some hair driers!!!:cool:


they won't heat a bottle very good will they??:)
85Camaro
04-19-2006, 07:53 PM
they won't heat a bottle very good will they??:)

with a turbo the only bottle you will need is one for the air launchers on the dual chutes;)
LTLHOMER
04-19-2006, 09:07 PM
with a turbo the only bottle you will need is one for the air launchers on the dual chutes;)

Not true...co2 for the top of the wastegates. :)

Don't forget the fire-suppression system. lol
ls1matt
05-16-2006, 04:09 PM
We are building a carbed LS1 right now. We will let you know the results soon at a friday night race at milan.

Matt
LTLHOMER
05-16-2006, 11:42 PM
We are building a carbed LS1 right now. We will let you know the results soon at a friday night race at milan.

Matt

Val's car?
DRCE
12-13-2006, 04:46 PM
Did we ever get details on what the carb'd LS1 turned out?
ls1matt
12-14-2006, 02:52 PM
Did we ever get details on what the carb'd LS1 turned out?

Ran pretty much as expected, Went 9.40 @ 142 with an TH400 in a 3300lb firebird.
9secvega
12-14-2006, 03:42 PM
what would cost less a 700hp 434 smblk or a 700hp ls1.
i've been thing about a ls1 in my vega. and would my headers work?
deputydog
12-14-2006, 05:43 PM
I would say the LS1 would be cheaper. Your savings will be in the block and heads. A 6.0 iron block is almost as strong as a little m or iron eagle and alot cheaper. If they ever make adjustable rockers for the L92 heads you would be in business.

Matt, dont forget to mention that was with C5R heads and a $1400 custom intake.