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If anybody can educate me on NOS or point me where the find out how the use it..
I never used it but the new car I bought has it hooked up and I want to try it.

The car is 65 Coronet 383, steel ported heads. Don't know the compression ratio, 727 w/ 10" converter, 4.10 posi. 29x9 hoosiers. The bottle is in the trunk and I took it out and weighted it. It weighs 20lbs. and there is gas in it. The dash gages also has a fuel pressure gage. the shifter has a nos button it, but I have not pressurized the system or tried it yet. I don't know how old the plugs are, The pis of the plug is after 6 runs I did on gas. The car ran 13.17 @ 103 last week in 90 degree heat.
I don't know what jets are in the holley. The plugs look very clean almost lean?
When should I hit the button? and do I hold it for the full run?
Let me know what I should do and any advise is much needed.
I would like to run the car tomorrow and maybe try the nos, if I can make it work.
Any help or advise is much appreciated!
Thanks!
Don

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1st. thing, like mentioned, you need to see what jets are in there, Plus take the extra plate off unless the spray bare are already out & its just open. See if it even has jets, it could be a fixed plate like a powershot 125.

I would advize installing a throttle switch for WOT activation, much safer this way, one of the worse things you can do is activate the N2o with too low RPM or low throttle opening from a button.

Never run the N2o during a burnout

Install a fresh set of plugs & tighten up the gap to .033"/.035"

Start off with a 125 shot, Don't remember the F/N jet sizes off hand.

Make "damn" sure the fuel supply is up for it, you can T off with a 125, but 150 & above i'd look into a dedicated fuel supply for the N2o.

If the plate hasen't been used in awhile, i'd pull it off & run carb cleaner through it to make sure the spray bars aren't stopped up.

Make sure the ignition & curve are good with no erratic behavier. I like running a good ignition system with an adj. dist. for the timing curve, thats just me though.

The thing with N2o is this, You want to get the car to run at its best, then run the N2o, Thats where you really benifit from the best gains, Basically meaning, don't have the engine running so-so & use the N2o to benifit the power.

It never hurts running alittle race gas mix 25% 110/ 75% Premium, But if the compression is low enough & you don't exceed 125, you should be good on pump premium, Your trying not to cause any detination, thats the key, You can get away with less octane, but you'll need to pull more timing & possibly run a colder plug & keep the Fuel jet higher, But the gains will be more if you have higher octane, then you can run quicker from more tune.

I hope some of this info helps, I love Nitrous, but i was a bit sceptable in the beginning, now i've learned what the does/don'ts are when running it, But as anything especially N2o, Its a 50/50 chance you take, don't let that scare you, you can lower that percentage by playing it safe & pay attention to your tune, plus read the plugs, I like NGKs, they are easy too read, plus "don't get greedy".

Definitly get a bottle pressure gauge, then theres no guessing were the bottle pressure is at.

For a 125 shot, pull 4* timing from your best NA tune.

Here are a few of the parts i mentioned.

http://www.jegs.com/i/JEGS-Performance-Products/555/41005/10002/-1
http://www.jegs.com/i/JEGS-Performance-Products/555/16500/10002/-1
http://www.jegs.com/i/NOS/741/13721/10002/-1 Jet kit for 100/125/150