I've been looking into which type of system to use for this large of a shot, so I'll ask the nitrous gurus. What are the advantages and disadvantages of a twin nozzle system compared to a throttle body plate system, or any other type of system for that matter.

 

for a 300 shot I would higly reccomend a direct port system...it will give you the ability to tune each cylinder independantly....on that size shot you need to make sure you are getting even distribution.

 

Whats the total HP goal. Nitrous + motor? Are you on a stroker making big NA power already? Or a forged 347 making good power?

 

Currently, it's a cam only 408 (I know, retarded) making 432 rwhp, 431 lb./ft. of torque through a twin disc clutch and 9'' rear end. I'm figuring that with a nice set of Trickflow 225s and a ported Fast90, It should make right over 500 rwhp. The motor was built with a 300 shot in mind. With that said, I guess I'd like to shoot for 800ish rwhp.

 

I'm guessing with this sizeable of a shot, race gas may become a factor. What do you guys think?

 

you are way better of with a direct port and seperate fuel cell with 112 or 116 octane> cant go wrong with that, plus the advantage is that you can still run a bit more timing.. Used to have a stock type bottom end ls with h/c combo and a 250 shot with 29 deg. of timing still running strong .. JUST REMEMBER TO CHECK PLUGS OFTEN AND A/F .. HAVE FUN