Well i heard that you can not run big cams and n2o. Because both valves are open at the same time. Is this true.

I wanted to run a 100 shot or a 125 shot. But i heard that i cant becuase of the cams i put in, and now i was wondering if a small shot like a 50 shot is ok. or can i not run n2o at all

im running crower 404 cams by the way in a built LS.

heres the specs:
Duration: 249/251
Duration @ .050: 216/218
Lift: .446/.432

their the stage 3, 3/4 race cams....plus i **** about 8,200 is that to high for n2o neway?

 

You definetly can.

With the increased overlap more n20 will go straight in the intake valves and out the exhaust, but that doesn't mean it can't be done.

 

Yes, nitrous is alright. Boost is the one that can cause problems w/ bigger cams.

Spray that b*tch!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">Yes, nitrous is alright. Boost is the one that can cause problems w/ bigger cams.

Spray that b*tch!</TD></TR></TABLE>

Problems? school me.
-PHiZ

 

no schooling tonight; just that a few people have claimed problems that VTEC has caused a less-than-expected boost in top-end power when charged, and that the theory sounds right for the boost-bled-through-the-valves idea.

 

Ok, so valve overlap robs power in FI applications... But it's not like dangerous, per se, right?

-PHiZ

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
Yes, nitrous is alright. Boost is the one that can cause problems w/ bigger cams.
</TD></TR></TABLE>

nitrous is boost.

 

Nitrous is just like n/a. There is nothing forcing the intake charge into the engine therefore the engine acts like like its n/a with lots of power, accept if you are running a big shot like 200 horse then you start lowering the compresion to avoid detination. But detination isnt that much of a problem because of the cooling affect of the nitrous. As far as cams go they are pretty much the same as an n/a cam but you prolly want to shorten the intake duration and spread the cams apart a bit but you will have to tune that your self. Im setting up my new engine with a 100 shot and 12.8:1 compresion. There are a number of people (that know what they are doing) that are running even more compresion and crazy cams. The best thing to do for cams is phone the cam manufacturer and talk to their experts. Try to stick with companies like cane, crower etc that have experience with V8's those are the only guys that know about running a motor on nitrous. The import cam companies mainly know about n/a and turbo. PS Ive heard that the zex cams are crap, not aggressive enough, apparently. If you dont believe me call the cam help lines they will help you out.

 

That's funny, i've heard great things about zex cams, mainly on SOHC motors.
Excellent point also, Nitrous isn't boost, but it is Forced Induction (cramming more O2 into the cylinder)

-PHiZ

 

um, and the difference between boost and forced induction is?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
At 572 degrees fahrenheit, the molecular bond to nitrous is broken. The oxygen molecule is burned to enhance the flame front and the nitrogen molecules act as a buffer. That's how nitrous makes power. It takes the same molecules you find in ambient air and changes the ratio. It, somewhat, does the same thing as a supercharger or turbocharger, to an extent, but it does it with chemicals. In addition to increasing the cylinder compression and oxygen content, it also has the nice side effect of decreasing intake air temperatures. When used in conjunction with a turbo or supercharger, it can also add an intercooling effect.
</TD></TR></TABLE>