Need to know what size jets to get approximately 100 rwhp on a dry dual NOS nozzle system? I have used dual #28's but barely feel anything. Went up to #32's and pick up 7 tenths. This setup is on my 03 c5 z06 with vararam. I'm using Dual NOS dry nozzles pointing at the maf. Best time to date with #32 jets it's been 12.03@121.95, I know guys do better than that without the juice, but I'm no driver, so I need all the help I can get.

Thanks

 

Mine was 36s... that was supposedly 100 rwhp. Didn't dyno it and then stepped up anyway.

 

Also, the Colonels table is NOS fwhp at 950psi and the 100 crank is actually dual .033 and nos used to send a .032 and a .034, that's what I got on my first 5177 and the math backs it up. (That is a quote from the link below which is a sticky) Hope that helps!

https://ls1tech.com/forums/removed-locked-thread-graveyard/441077-master-jet-list.html

 

So what did you end up with? and how much HP did you end up making on the dyno?

 

Yeah, I used Colonel's chart to come up with the dual 32's that I'm using now but I didn't know it was at the crank, so for rear wheel, I definitely need to go bigger, but how big? 36's sound good..

 

100 RWHP=.036

That looks good to me

 

I picked up 88 rwhp with the .036s & 1050psi on a full bottle. (A4-locked converter)

 

dual .036 is about 97.75rwhp according to the math, in a perfect world. Exact hp will vary from car to car for many reasons. Every increase of .001 is good for 2.5 hp. So a dual .037's should be about 102rwhp. These are with a 950psi. The only way to get exactly what you want is to jet it on the dyno for hp.

When your ready to start spraying bigger, let me know, I would love to help. The current stock longblock Z06/LS6 record is 10.5 and a dry hit of course. Add your time to the list over at corvetteforum in the c5 Z06 section, it's a sticky at the top of page.
Robert

 

Thanks Robert56

I'm glad you responded. I know how knowledgeable you are with nitrous. I even bookmarked your web page and installed my nozzles on my VR following your how too. I don't post much, but I spend countless hours reading daily and was hoping to hear from you on this thread.

Right now I'm in the early stages of experimentation, but as soon as I'm ready to step it up, You'll hear a bit more from me. So far I ran 12.03 with the 32's and that was on wide ovals and with excessive wheelhop on the 1-2 shift. I truly belive that had I not powershifted the 1-2 shift, it would have been an 11 sec pass. It was the first time spraying it and unfortunately I didn't get another run on that day. My only mods is VR and Ripper short shifter.

Arm with this knowledge, I will order more jets and post my more results as soon as I have them. I take it, I'll be good for mid 11's whith the 36-37 jets in. We'll see.

Thanks again

 

That's not bad for the wide ovals, Firestones? A good set of DR will go a long way in your fast times quest. The 10.85 in my sig is with only a Vararam and Drs, so your current goal of mid 11's should be doable with just a slightly larger hit. Don't forget to post your times at the vette forum.
Robert

 

Yep, Firestones. 40psi front, 25psi rear.

 

does it matter if you are just splitting the line after the solenoid, or are some people running 2 solenoids, or shouldn't it matter either way. also, if i wouldn't have the same exact jets, would it hurt to run a 32 and a 35 in the neck of the lid (f body) instead of identical jets? i'm splitting the line after my zex box and running dual nozzles into the neck of the lid.

 

A single noid is ok to split two lines from. The only thing if your going big, then the orifice size in the noid matters. The NOS 5177 is limited to about 135rwhp when running the redundant powershot noids, the orifices are small and having them back to back creates a restriction. But if you break the noids up, one to each line then you can hit about a 300 shot. I have been messing with spiltting the jet sizes up. There really is more to it than meets the eye. I would rec staying with same size jets. Having two different sizes changes the entire dynamics of how your dry will work. I'll try to explain this in the dry tuning thread being put together.
Robert

 

yeah, i'm not looking to go any bigger than 100-125. even with the single solenoid, the formula for the jets stays the same though? i'm looking at running dual 36's now from what i've been gathering and since i have a pair of them. i figured that i'll have it tuned with them and if i need to i can always go down in jet size and stay safe.