got the motor all together for some n/a racing this weekend

 

oooo pretty

 

That intake is bigger than my motor!!!

Wish I could go, even to watch....
Good luck

 

I think from the spacer to the bottom of the intake ports it's over 8.3" tall Thats not counting the height of the carb or if I can actually run an air filter or not. But I'm going to tune the motor for all out n/a with the spacer then pull it off and see what drops off or if it helps even.

 

all loaded up and ready for tomorrow should be negative DA

 

Nice!looks like a monster.. Goodluck . Make sure u post vids, and times

 

Looks good, makes me wish I had a 4in cowl on mine. What do you have plugged into the intake just below the spacer?

 

I believe that's his MAP.

 

Let the carb haters look at tail lights! LOL

 

Looks ANGRY!

 

indeed....although i zero'd it out since it was screwing with my timing at idle and causing issues....must be the valve overlap
and they DID too. whew!

Thanks man, sounds angry too

 

So, any track footage or results?

 

Nothing wrong with a carb on a race car!

 

I daily drive mine

 

me giving the hit to another local grudge racer, was coming up on him strong at the end but no luck, ran out of track

 

Looks great! What times were you running?

 

kinda hard to grudge race around here if i post any, so unfortunately that is the one bit of info that I leave out of my threads.

 

LOL fair enough

 

I take exception to them when someone wants to take a complete drop-out and convert it to carb, everything else stock.

Everything I had used to be carb'd. Now I don't own a carb (at least, not one that's on a running engine - still have some in the garage attic and storage unit).

 

between the wideband and the ease of setting timing on the msd 6010 box I wouldn't have it any other way. Upset some heads and cam cars with my GM parts only longblock motor so I'm pretty happy here.

 

Exactly, all the local guys arent touching me with heads and the works, their dyno tune can cover my intake and ignition nearly, LOL.

 

The issue with the carbs on LS1's wasnt the fact that the dont make power it was really the issue that no one seemed to know how to get a fuelly swapped in and running well so we ALL were looking at a carb swap ( me included at first ) But it really is pretty easy to get the LS1 swapped over retaining all the electronics etc. Most swappers initially were not aware of this and thats what started all the discussions and "DONT CARB IT" blah blah blah

Nowadays there is not much mystery to anything LSx swap related. So guys such as yourself xpndbl3 are making informed and intelligent reasoning for choosing carbs which I would still do if natural aspirated racing was my first objective. Its hard to argue over the performance of a big single plane and the simplicity of tuning at the track.

But for any daily driver primary street car I still think its a big loss to use a carb over the injection but to each his own. If you add boost the electronic controls become your best friend at that stage and carbs would be a much bigger set back.

 

One truly nice thing about the carbed LS motors is that the corresponding intake manifolds put the power right where you want it for a race motor. I'll argue all day that I'd rather have the EFI for a street car, but the easy tunability, as well as the high rpm horsepower associated with those victor-style intakes certainly has its advantages.

 

True. Plus n/a fuelly elbow set ups seem to be very tricky to get working well comparatively. It almost seems hit or miss once you get away from the stock intake config and try and retain injection.

Mind you I love the injection its the only way to fly for my coin. Im getting into tuning now as well so its not nearly as big a deal for me to tweak to my hearts content

 

I learned my lesson with tuning on TPI. I don't have the time nor the ambition to dedicate the hours it takes to become competent.

Plus, the more I learn about tuning, the more I'm convinced that unless you've got a dyno with a load control to accurately calibrate the steady-state conditions, you'll never get it right. When I get my motor in, I'm taking it to a pro to tune it.

 

You cannot compare tuning TPI to LS1's anywhichwaywhatsoever. IMO you simply cannot tune modified TPI's period. Sure you can dial it in for the moment but as little as 5 degrees temperature change or some barometer movement and it runs like a turd. We wrestled with my nephews vortec headed TPI stealth ram for two seasons and managed mid 12's but the tune was never what I call stable or daily driveable. Maybe its possible Im not entirely sure how but maybe...

That said with the massive increase in processing parameters and memory available in the LSx PCM's they really only need a close enough tune to work extremely well. My first tune was a PE MAF scaled hack with all the wrong injector values and all and it still ran fantastic everyday and accomplished amazing mileage. How little we knew then and it was still very good. Mostly because these things can figure their own way out and pretty damn far out too I might add.

Anyways I wasnt trying to flame or battle or sidetrack I just wanted to be crystal clear that I will never EVER attempt to modify another TPI or tune etc. so if your basing your tune worries on LS engines over your TPI tuning experience I can see why you would want to shy away. Tuning LSx engines is simply night and day better.

As for dyno? Meh we just tuned one on the street VE tables and all. Works extremely well. Took about two hours. You do need a decent wideband though and logging capability. Only thing a dyno offers otherwise is a safe environment to tune, and the hp numbers. Otherwise if its dialed... its dialed.

 

well to be honest, that really sounds encouraging. I'm still taking the IROC to a pro, but I'd love to dabble with a more mild car, perhaps a 5.3 daily driver 2nd gen.

 

That is the easy part with a boosted carb setup, you just need to convert to buy a blow through carb, then the MSD 6010 actually can pull timing with boost using the MAP sensor. It is nearly cheating. Otherwise, the carbs are not perfected yet for cheap, but the Pro Systems monoblade is supposed to be perfect, but it is a hefty price, but i am sure well worth it.

I DD my car every day, other than the solid motor mounts, lack of interior sound deadening and no power steering(my choice), i dont have any issues. Cold starts arent bad, hell, i know EFI guys that have to crank a few times after sitting in a car meet before they get theirs to idle and mine just fires right up, LOL.

My primary reasons are ease of tunability and CHEAP. If you are already running a carbed car, they swap becomes way cheaper.

 

Just make sure you get your VE tables tuned. I made that mistake with my first tuner who has since apologized to me for it. It ran great and performed well but it was soooooo much better after the VE was set and the injectors were scaled properly etc. Easy tunes are PE hacks. Takes about 15 minutes to tune that way and it works amazingly well for performance just not great for dd use. On Stock cams PE tuning works very well its when you change cams and/or displacement that VE will need seeing to.


Mine starts fast... REAL fast. But thats interesting about the MAp/carb use I had not heard of that before. Its all getting easier and easier eh?

 

We have a blow thru C&S carb in a mustang hatch with a stock 6.0L and some z06 cam I believe with a 76mm unit running 10.2X at 142mph and could daily drive if wanted, leaves on zero boost due to a tight converter and no transbrake.

 

We are definitely going to need vids! Zone has a pretty nasty carb'd LS motor. You guys are really kind of tempting me to put a LQ9 in my van and carb it LOL

 

Mine is just a cammed stock long block LQ4, xpndbl3 has the built motor

 

Nice set up xpndbl3.

Yea, what is it with people hating those of us with carb'd cars? I took my car to my first (and last) meet with a local group last year and I was pretty much scoffed at by those with fuel injection. That totally sucked since I was admiring their cars and all the hard work they put into them.

I have nothing against fuel injection especially since I would like to own a 1992 Firehawk. I guess most people forgot that they began with carb'd cars.

 

They all scoff because they don't know any better. I get to scoff extra hard when I'm out whacking efi cars with less mods on mine

 

Yea, if carburetors are so bad, then why do the Nascar teams use them in their cars instead of fuel injection? Carb or fuel injection. It's a personal choice.

 

nascar is required to run a spec carb actually

 

So there you have it.

 

Nascar rusn carb for one reason and one reason only.
It's simple so it's hard to cheat.

With a carb which is a pysical item only physical changes can be made to it. Physical changes can be seen with the eye and that means disqualification for tampering and cheating.

Now eletroinic fuel injection works a little different. Using a signal to control the opening and closing of the injector it makes things more complicated as signals can be interferred with and manipualted through a plethora of ways.
This means someone can change the prarameters of the injectors function allowing for an edge over another competitor racing legit.

So in the name of keeping things fair and protectig the image of the Nascar name they run carbs.


Any ways though nothing wrong with running a carb. I tune LS engines but run a carb'd 383.

 

I went from the 383 to the 6.0 and man, i wish i would have done it sooner. The 383 was no punk, but my stock motor does wonders.

Carb is for simplicity and just pain old, more power.

 

From my experience with both, modern fuel injected cars will totally drop dead on you if you experience an electrical problem (i.e. in tank pump goes out, e.c.m. dies etc.) With a carb, you can at least can limp home or to a service station providing you have a mechanical fuel pump. Both have plus and minuses.

I wanted an 87 LT and got lucky when I found mine sitting in a lot at a Chevy dealer. If it were a fuelie 6 or carb'd 8, didn't really matter. Although, having the 8 was a bonus. It reminded me of driving my brother in laws 1979 Z28 and the cool rumble it made.

 

Both are dependable as hell. But one can be more expensive that the other by a long shot. I dont see and cabred rides getting the MPH that the EFI do, but that is a sacrifice i made. I still get 20 or so while EFI gets 24 up.