I have been debating about what nitrous system I would get. So help me spend my money.

I have a 434 n/a motor, 11.5:1, very large solid roller cam and want to put the car in the low 9s or high 8s maybe with some juice. I have a solid rear conversion in my car so hitting it off the line is not a problem, other than it going on the roof maybe.

I have a single plan intake so a plate system would likely be possible, but it might interfere with the fuel rails etc - not sure.

Anyways what system would you pick for me and WHY?

Other questions are how many runs can I expect to get on a 10lb bottle? Mainly just want it to go really fast every now and again. high 9s and bottom tens on the motor is perfect for bracket racing.

My block is a dart little M, pro mod rods, and JE forged pistons so it should take the hit.

Curious as to what would be best. Oh yeah I have an accell DFI that can be incharge of the juice.

Thanks.

 

I never get tired of watching your car go down the track....

on the nitrous questions, I would say a plate system on a single plane works very well, I am doing nitrous on my turbo vette this go around and I will be doing direct port I think for piece of mind in my LT4 intake for proper distribution.

for me, and I am not sure what fuel you run in the car but I'm guessing minimum of 93 octane and likely some 100 octane race unleaded maybe?

I am going to size my fuel jets on the direct port to work with methanol to help cool down my boost temps and stave off detonation from dual power adding and high cylinder pressures, I'm doing this with a stand alone 1:1 regulator, methanol friendly high pressure pump and tank. the nitrous main power and fuel pump will both be activated by the arming switch and then DFI will run it from their.

may not be a bad idea for you, you will get more power adding 150-200 hp worth of methanol then gasoline regardless of the octane rating, you will help keep the pistons cooler and drop intake air temps all at the same time, hell I bet with both nitrous and meth you get ice almost in manifold..lol

just my idea but your welcome to it.

so in summary, if it were me... I would do direct port with a stand alone fuel system using methanol for the win!

Chris

 

Jesse
What I'm running on my 434 is a NOS Big Shot system with a progressive NOS controller, MSD 6T, and a MSD digital ignition retard. Fuel system is 1/2" forward and 3/8" back, using 2 255 lph Walbro pumps. The progressive controller allows you to ramp the power into the system from 0% up to what you want to go to. I've currently got it jetted at 250 @ 100% and start at 20% and ramp up to 80% over 1.5 seconds. I've got a .5 second delay in the start, I'm running a ZF. I don't use a window switch, and I use a micro switch for WOT and a line lock switch, for further control clutch depression cuts the NOS off. I leave the line at 3000 and shift at 6500. I leave the line, press line lock button on the shifter and WOT system cuts on in .5 sec, it's quick so system doesn't blow the tires away, shift system is off with the clutch switch, clutch out .5 sec system on, again quick, shift and so forth. System is on longer each time so shot is progressively stronger.
It saves the tires and suspension parts. Something breaks every now and then, but so far, so good.

Ramping up the system reduces cylinder pressure spikes and doesn't shock the tires, or the suspension, as violently.

434 ci, dart block, howards 4", carillo 6" rods, Ross ultralite FT 0.0 deck, .615 - .630 lift, 246 - 252 @ 0.050 114 lsa solid roller, much modded Victor Jr heads, welded Accel EFI sgl plane, 1200 cfm TB. The throttle body is modded to open all 4 bbls at the same time.


Johnny

 

What sorta times are you running with that 434 and nitrous?

Thanks fellas - keep the ideas and comments flowing.

Johnny, since we have nearly the same intake - do you have any photos I can see? Thanks.,

 

If you are planning on doing a 1-200 shot then I would go with a plate system for your single plane. I'm sure both NX and NOS make plates. It will take some tuning to get the a/f just right.

But if you are planning on taking over a second off of your time I think you may have to bump up the shot. Given that I would look into a direct injection setup. That's going to give you the best and most even distribution to each cylinder.

Just don't forget to retard the timing. And I know its a pain in the ****, but start with a 50 shot and work your way up. I going to the big shot and ended up pulling the engine the same day.

 

How much of a shot can your motor handle? In the future you will probably want more. A direct port would be best over 200. Dual stage? Check out the Pro Shot Twin Fogger 2. I would go with a bigger bottle if you are going to be running it a lot or two 10lb. On my little 125 shot the 10 lb bottle empties quick. I may get close to 2 minutes of use at $42 a bottle.


http://www.nitrousoutlet.com/catalog...del=66&dept=11

 

Jesse,
I am having a ZEX perimeter kit installed on my 86 Monte Carlo SS...only putting a 100 shot on it, as it has hyper pistons and any more, I am afraid that it would waste the pistons. Haven't tried it yet, but once I do, I'll let you know what I think.

Neil

BTW...with the 100 shot, I will be running dual 10 lb. bottles. Shop figures I would be just about out on one bottle if I go a number rounds in the GM Challenge here at Moroso.

 

emailed you.