View Poll Results: Which is best/why?
Fogger in the intake elbow
31
31.00%
Throttle body Plate
29
29.00%
Direct Port
30
30.00%
NOS noszzle system
5
5.00%
Other
6
6.00%
Multiple Choice Poll. Voters: 100. You may not vote on this poll
How to spray an LT1
12 Second Club
Joined: Jun 2005
Posts: 227
Likes: 0
From: Mechanicsville, VA
I'll give you my own personal experience.
My '96 in sig started out with a 100 wet by way of a fogger just before the TB. That picked me up from 13.7-.8's @ 101-102 to 12.7-.8's @ 109-110. I then upped to a 150 shot, which brought me to 12.4-.5's @ 112-113.
Then, I switched to a CompuCar plate, and with NOTHING else changed to my set up other than getting rid of the fogger, I went consistant 12.0's @ 115-116. Now, ask me if I'll ever run a fogger again.
For the record, at that point my car was bone stock save for a K&N/cat-back.
Jon
My '96 in sig started out with a 100 wet by way of a fogger just before the TB. That picked me up from 13.7-.8's @ 101-102 to 12.7-.8's @ 109-110. I then upped to a 150 shot, which brought me to 12.4-.5's @ 112-113.
Then, I switched to a CompuCar plate, and with NOTHING else changed to my set up other than getting rid of the fogger, I went consistant 12.0's @ 115-116. Now, ask me if I'll ever run a fogger again.
For the record, at that point my car was bone stock save for a K&N/cat-back.
Jon
Thread Starter
TECH Apprentice
Joined: Jul 2004
Posts: 347
Likes: 0
Thanks everyone, I was kinda wondering if it's all a difference in opinion.
COMNBYU - thank you also, good to hear an exact comparison like that.
Thanks for all the heads up on safety stuff. I planned on some of the normal stuff, and things like fuel supply, well lets just say I need to upgrade that before ANY size shot goes on. I doubt the S10 fuel system is up to the task.
I personally, don't want to spray from the MAF b/c it's around the corner from the intake (LT1 is in my S10, and uses an intake hose from an Impala). I'd prefer something to spray EVENLY into the intake. I don't see how that is possible around a bend, or I atleast don't think that's the "best" and safest way to do it.
A fogger pointed right at the thottle body seems like it would be much better.
In my mind I picture either a TB plate, or plumbed throttle body to be the most even spread, aside of a direct port (which then depends on size of shot).
I guess with the amount of spray, and times I will spray, a plate seems to be the best, unless I can find a decently priced oversized TB that's plumbed for nitrous, just incase a later build would benefit from the larger TB.
My intake is drilled for direct port, but I would still need to buy all the distribution blocks, jets, and additional lines. I have a basic NX fogger kit, and the extra nozzles, the rest would be peiced together.
BTW, poll result are closer than I expected. Well, except for Noszzle systems, which aren't for LT1s, but I hadn't really thought about it before posting the poll.
COMNBYU - thank you also, good to hear an exact comparison like that.
Thanks for all the heads up on safety stuff. I planned on some of the normal stuff, and things like fuel supply, well lets just say I need to upgrade that before ANY size shot goes on. I doubt the S10 fuel system is up to the task.
I personally, don't want to spray from the MAF b/c it's around the corner from the intake (LT1 is in my S10, and uses an intake hose from an Impala). I'd prefer something to spray EVENLY into the intake. I don't see how that is possible around a bend, or I atleast don't think that's the "best" and safest way to do it.
A fogger pointed right at the thottle body seems like it would be much better.
In my mind I picture either a TB plate, or plumbed throttle body to be the most even spread, aside of a direct port (which then depends on size of shot).
I guess with the amount of spray, and times I will spray, a plate seems to be the best, unless I can find a decently priced oversized TB that's plumbed for nitrous, just incase a later build would benefit from the larger TB.
My intake is drilled for direct port, but I would still need to buy all the distribution blocks, jets, and additional lines. I have a basic NX fogger kit, and the extra nozzles, the rest would be peiced together.
BTW, poll result are closer than I expected. Well, except for Noszzle systems, which aren't for LT1s, but I hadn't really thought about it before posting the poll.
Last edited by chevy42083; Oct 1, 2005 at 12:10 PM.
I use NX's 20920 kit and spray 200 through the nozzle. Have to upgrade the nitrous line from the noid to the nozzle to the SHO line though. Get colder plugs, mallory 685 ignition box and a bottle heater at least.
Originally Posted by The LT1 That Could
Dry kits are okay for small shots (<100), the only thing is you have to rely on the MAF to adjust for fuel, therefore a fuel system upgrade is a must if you wanna run a big shot(>100). Wet kits spray their own fuel/nitrous mixture into the fuel that is already present in the fuel rails. I personally think wet kits are safer and have been running my TNT kit for over 2 years now, with stock fuel system, and the only time I have ever had any problems, was user error. Don't spray in OD, don't spray below 3000rpm, or get a window switch like a finally did. And just be smart about what you are doing, If you are going to spray a 175 on the regular, upgrade your fuel system. Better safe than sorry if you ask me.
moral of the story TNT Kits are the best LT1 spray bar plate kit on the market IMO.
moral of the story TNT Kits are the best LT1 spray bar plate kit on the market IMO.
Does anyone know if the LE3 heads and LE2 cam is a good set up to spray a 100-150 shot on?
Last edited by blind527; Oct 9, 2005 at 12:04 PM.
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plate kit . It looks the best on an lt1 to me 
Launching!
Joined: Feb 2006
Posts: 206
Likes: 0
I would go with the direct port... not only does the intake not flow fuel very well those head nor intake flow nitrous any better 
i am not saying that it aint effective because I sprayed a 175 wet and picked up 25 MPH in the quarter... so it obviously works, but I would say regardless of the size shot the direct port will be MUCH safer and probably more effective. Now if price is an object I would do the plate kit, because you will be suprised how much stuff you have to have with the DP kit 
my .02
i am not saying that it aint effective because I sprayed a 175 wet and picked up 25 MPH in the quarter... so it obviously works, but I would say regardless of the size shot the direct port will be MUCH safer and probably more effective. Now if price is an object I would do the plate kit, because you will be suprised how much stuff you have to have with the DP kit my .02
The direct port would be safest because it is putting the same ammount of fuel/nitrous per cylinder. That is extremely important when spraying a car.
From the research that I've done while I was piecing together my nitrous kit and deciding to spray my car -- I found that a lot of people preferred the fogger nozzle over the plate system on the LT1 because the first two cylinders would run a little leaner than the rest because of the TB being so close.
With the fogger it disperses it better before it hits the intake so it will disperse to the cylinders more evenly.
In your particular situation -- because your intake is already drilled for it, I would definately do with the direct port. That'll make sure you've got the same ammount of nitrous/fuel mix per cylinder, and will actually be much safer than any other nozzle/plate system that you would/could run.
You don't necessarily have to have a fuel pressure safety switch, as long as you have a way to monitor your fuel pressure. Obviously you need an adequate fuel pump/system to be able to keep up with it if you do choose to go with a larger shot.
A window switch isn't a neccesity either, but definately recomended. The most important thing (which a lot of people don't do) is to just install it and assume its all good. Get some wideband readings to make sure you're not leaning out too much on spray, and of course find a way to pull timing/get a tune that will work with it as well. Personally I'd rather lose a little bit by pulling too much timing, and ensure a much longer life for my motor.
From the research that I've done while I was piecing together my nitrous kit and deciding to spray my car -- I found that a lot of people preferred the fogger nozzle over the plate system on the LT1 because the first two cylinders would run a little leaner than the rest because of the TB being so close.
With the fogger it disperses it better before it hits the intake so it will disperse to the cylinders more evenly.
In your particular situation -- because your intake is already drilled for it, I would definately do with the direct port. That'll make sure you've got the same ammount of nitrous/fuel mix per cylinder, and will actually be much safer than any other nozzle/plate system that you would/could run.
You don't necessarily have to have a fuel pressure safety switch, as long as you have a way to monitor your fuel pressure. Obviously you need an adequate fuel pump/system to be able to keep up with it if you do choose to go with a larger shot.
A window switch isn't a neccesity either, but definately recomended. The most important thing (which a lot of people don't do) is to just install it and assume its all good. Get some wideband readings to make sure you're not leaning out too much on spray, and of course find a way to pull timing/get a tune that will work with it as well. Personally I'd rather lose a little bit by pulling too much timing, and ensure a much longer life for my motor.
I see many people running the NX MAF end kit. ANy tuner should be able to tune for the NX maf ends. I'd have to see a comparison, but they dont appear to be too much bigger than the stock 3.5"
Joined: Nov 2001
Posts: 10,023
Likes: 6
From: LT1 land...the "409" of the 90s!
Originally Posted by BizZzatch350
Holy old post bat man
No kidding! Just reminds me how out to lunch some of the people here are
Punching 200RWHP out of the hole with a Nitro Dave Hidden Direct port and perfect plug burn
