fofo

Is the risk of nitrous spraying exactly the same for all cylinders? If not, please indicate which cylinders (by number) are at the highest risk of detonation. This knowledge would make reading those particular plugs especially critical. Thanks!

FoFo
'96 Corvete GS 'clone' 454

383LQ4SS

iTrader: (33)

Fofo..I am not %100 sure...but I think it would be different for each engine. And then even different depending on intake design and other changes made. You have a BBC right? You would probably have to speak to someone with a similiar setup as you and see what is happening with them. Or start slow with your bigshot and pull the plugs very often and inspect closely.
How close are you to the maiden voyage? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Chris Spiess

What type of intake are you running? You're less likely to have a problem w/ a tunnel ram type manifold, but in reality there is no greater problem with the N2O than you would normally have with fuel distribution. As for checking plugs, check at least half on them and don't get into the habit of checking the same ones all the time.

fofo

Thanks for the response guys. My car is still in the performance shop getting the Big Shot upgrade, Jacobs Controller, B&M Shifter, and just about every gauge that I thought would help me monitor my engine vitals (A/F, NOS & Fuel Press., Trans Temp., Pyrometer, etc.). I hope to test & tune in another couple weeks. And, of course I'll report back. My intake manifold is a Edelbrock Torker II (single intake) primarily because I have no hood clearance due to the 454 big block (despite a cowl induction hood). I asked the question about the cylinders because my plugs (NGK 7 heat range) are very very tight and hard to get to (or at least 4 of them closest to the windshield). This makes it very difficult to read each and every plug on every run. As a result I'd like to know if possible which cylinders are the most likely to be affected by detonation. Thanks again.

FoFo
'96 Corvette GS 'clone' Big Block

Country Boy

iTrader: (24)

Is that a single or dual plane intake? I dont remember? Its been a while since Ive looked at the old SBC stuff. I have seen that Nitrous is a No NO with a dual plane intake. People usually always use the single plane to make sure that the fuel and nitrous distributes better. The dual plane is waaaay too iffy. I wouldnt think about it for a sec.

fofo

Very good point. It is a single plane intake for the exact reason that you've mentioned...to insure that the distriubution of the n2o & fuel are more even.

FoFo
'96 Corvette GS 'clone' 454

Country Boy

iTrader: (24)

Also, to help you with your question, some people have a problem with cylinders 1,2,7, & 8. All being the furthest from the carb. They tend to run a ted leaner than 3,4,5,6. I personally like the direct port setup for perfect distribution on all 8 and have no worries. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />