[Mark G]

Originally Posted by Scott Stoneburg

I've been thinking about asking for a while. I may put a small ( by today's standards) nitrous kit on my Firebird. Its been 6.40 at 107 in the 1/8th. Any guesses based on experience, as to how much I should expect to pick up with a 200 shot? Assuming I can hit it within the 1st 60 feet. Ive got almost no experience with using nitrous. I know some basics of tuning it.

5.90 @115

[chiefbigb]

Years ago I went from 6.40 to 5.93 on a 175 shot.

[Scott Stoneburg]

You guys using a controller or just a switch. I dont think a controller would be necessary at only 200 shot.

[Scott Roberts]

Originally Posted by Scott Stoneburg

You guys using a controller or just a switch. I dont think a controller would be necessary at only 200 shot.

I have done both... the controller is nice for delay and timing retard.
Not necessary but, you may as well get one because once you use the gas, you will want more...
It's much like a drug..

[Scott Stoneburg]

Originally Posted by Scott Roberts

I have done both... the controller is nice for delay and timing retard.
Not necessary but, you may as well get one because once you use the gas, you will want more...
It's much like a drug..

That could be true! I've also heard about using a higher fuel pressure / smaller fuel jet for better atomization.

[Stan Weiss]

Originally Posted by Scott Stoneburg

That could be true! I've also heard about using a higher fuel pressure / smaller fuel jet for better atomization.

Scott,
What would you call high fuel pressure?

OK, let me say I have never run nitrous and I understand that the hot setup continues to change.

A couple of years ago I saw Jack check / set his fuel pressure and I would not call it high.

Stan

[Mark G]

Originally Posted by Scott Stoneburg

You guys using a controller or just a switch. I dont think a controller would be necessary at only 200 shot.

I got one for sale on here New ..

[Brian Baker]

Results vary based on the combo. If you just threw a 200 on it and changed nothing else but total timing you'll pick up X amount. If in addition you installed a tighter converter and a lower numerical ring & pinion, you'll pick up X+ amount.

I ran a tight converter and a 3,73 gear with 29" tall slicks. Naturally aspirated the converter made the car a pig in the 60' (it would only flash to about 3200 rpm). Launching on a full 200 hit it would "wake up" and flash to 4300-4400 rpm, allowing it to "leave on the cam".

At 3850 lbs. race weight I got the following best 1/4 results:

11.40 @ 120 n/a
10.19 @ 131 on a 200 shot

I always ran the fuel pressure at 6-1/2 PSI to the nitrous system solenoid with it's own proprietary fuel pump and line. I always pulled 8 degrees out of the total timing. I ran the mechanical advance locked in the distributor and used the "start function" in the MSD box to pull 20 degrees out so it would start. I usually ran between 32-34 degrees locked naturally aspirated. I also tried to leave with the n2o bottle pressure at 1000 psi. The nitrous solenoid was wired with a WOT switch and was all there on launch.

And read your plugs, you may find even with a 200 shot you may have to go one range colder (maybe two) from naturally aspirated.