I am thinking of upgrading the nitrous shot. I have been running NOS Powershot with 125HP and bought the bigger Cheater solenoids and Bryant is gonna give me his old Cheater plate. So the question is how much I can run and what other upgrades I should do to safely run this. Engine is 331 low compression (8.7:1) that has pretty solid rotating assembly. The intake is a Performer RPM. I have ET Street MT tires, traction bar, a cage but no subframe connectors yet. Would it be safe to run 250? Can I do a single stage 250 shot or would that light up my tires?
Me and several other people I know that have used NOS Cheater Plates always found the biggest gains to be with the 180-200 jets..... Any bigger jets then that and I just used more juice but didn't see any additional gain in et..... Everyone I know picked up .9 to 1.1 et in the 1/8th with the above jets.....
I don't know if I'd run more the a 125 shot on a plate kit with a dual plane intake. Just generally not a good idea. If your doing a lot of drag racing then you might be better of going with a single plane intake before stepping up to such a large shot. The only thing I would really consider when doing this is... Are your internals strong enough? Rear end and tranny strong enough? Do you have the fuel system to support it? And jmho I think thats way to big of a shot on a single stage. If you run a window switch you could use a skip shift but unless you got some serious tires and suspension on her i don't think the amount of nitrous your talking about out of the hole is gonna do anything but loose traction at best. Either run two stages or get a window switch and skip shift your spray to 2nd gear, still probably gonna break traction then though with one single stage of such a large shot.
And I know these are two different cars but I was running a 125 shot nex wet kit on my 4.6 3v stang making 432rwhp and 447rwtq and had to skip shift to 2nd as I'd just burn em down in 1st. I was running 295 MT ET streets with suspension work and still couldn't hold traction in 1st on the track with just the 125.
I don't think I could keep traction with a 200hp hole shot. I was thinking about dual stage as well and if I can't keep traction then that's what I'll end up doing. I was reading something similar about dual plane intakes, gonna look into it some more.
Yeah the problem with dual planes is when your running that big off a shot you have that big ole piece of metal seperating the two planes which can be quite a problem if you don't get equal dispersement between the two. ( spell check lol ) I ran a dual plane on my nova until I went with a 200hp shot then I switched over to the victor jr intake. Saw a difference in my N/A power but the 200 pills did way more then make up for it lol. A lot of dedicated nitrous guys out there won't even suggest a plate kit for more then a 125hp shot, especially when your talking more then a 200hp shot. If you know your gonna be running that big of a pill and you have the money to spare I'd recommend going for a direct injection system. You can run that rpm performer manifold, which I believe already has nitrous bosses for it, still have nice streetable dual plane performance and not have to worry about loading on any one cylinder due to dispersement issues.
Also you might want to look into a nitrogen assist kit as well. A bottle heater struggles to keep up with a 125 shot during the course of a 1/4 nitrous run. For example you have a 125hp shot coming out the hole..... realistically your probably trapping on a 70hp shot due to bottle pressure loss. Bottle heaters are good but unless you have a topped off bottle your not even going to be able to sustain a 250hp shot for a 1/4 mile run. The nitrogen assist kits simply take a small scuba tank and you fill them with either nitrogen or compressed air ( about 5 bucks at your local scuba shop ). They put a pressure cap on the top of your nitrous bottle. So no matter how long your in the spray the pressure never drops. You will maintain that 950psi until every last bit of nitrous is gone out of your bottle. The improvement is drastic to say the least. When running the 125 wet plate kit on my mustang I had to retune just for the addition of the nitrogen kit. It added a crazy 15rwhp and 20rwtq on back to back dyno runs switching from a bottle heater to the nano kit.
mo, how about just puting the cheater plate on top of your power shot plate. then two stageing it. use the power shot plate at 125 out of the hole then have the cheater plate come on with a 150 shot in second gear.
i dont know but we could always take my other hood and see if we can come up with a cool modification
Have you maximized everything else yet Mo? Are your 60' times consistent and in line with what they should be? I would stick with the 125 shot until I have the chassis and everything tuned to run as fast as possible with that setup. You might be chasing your tail with spinning the tires and burning plugs or even worse a piston. Power isn't everything...Good luck and let me know if I can help any.
no my 60' times still need more work. I definitely need to work on it. It's good advice. Having the traction bars really made a huge difference. I think practice also will help a lot. Like Bry said, hitting the nitrous off the line might help too.
