First of all, I assume you have the 350-4bbl. If you have a 2-bbl, it will be hard to find a plate setup. Anyhow, basically you'll need to: - Find a place to mount the nitrous bottle (trunk?) and make sure you do it properly. Usually the top of the bottle valve should face the front of the car and the bottle should be at a 15 degree angle. - Install a plate under the carb (you might have to futz with your choke thermostat). - Run a nitrous line from your bottle to your plate (with a solenoid up near the plate somehow). - Make sure you have the best fuel pump you can find, and it is in good working order - Tap into your fuel line, to run to the fuel solenoid. You will also need an independant fuel pressure regulator, as well as a fuel pressure cutoff switch. - Wire the system- this will require a master arming switch, as well as an activation trigger switch. You will probably want to use a relay for this, so you don't run full current through the switch. You have to tie the fuel pressure cutoff switch in to this circuit, and you would also be smart to tie in a full-throttle switch mounted on your carb or gas pedal (tranny kickdown switch may work well, if so equipped). - Make sure you have the best ignition system you can. If you get an HEI setup with MSD and an aftermarket coil, that should be good. - Switch to spark plugs that are one heat range colder than stock- for AC Delco, you would run a 43 instead of a 44, and for Autolite you would run a 24 instead of a 25. This might not be crucial with a 50-75HP shot, but it can't hurt. Also make sure your wires are in good shape, etc. And for the record, I don't like NOS. Find another brand, in my opinion- the highest quality components you can find (not the lowest price or most easily available). Do not use a pulsing nitrous controller unless you get solenoids specifically made to handle them. Most nitrous kits use standard industrial-type solenoids that are not meant to be pulsed (although they will frequently tell you that it is okay to pulse them, you are asking for trouble). At 75HP, you probably don't need to pulse them anyhow. -Bob Cunningham
Hey Bob, so what brand solenoids are made specifically to be pulsed? I've never seen anthing advetised that way, so have no idea where to start looking...
Adam, These are the ones I would use if going to a pulsed system- http://www.noswizard.com/pulsoids.php -Bob Cunningham
Here is the manual from NOS- http://www.holley.com/TechDocs/Instructions/NOS/Sheets/A5074-SNOS.pdf It suggests (page 15) that the solenoids be rebuilt every 6 minutes of operation- that's probably about every 2-3 bottle fills. The pulsoids I mentioned above never need rebuilding- that makes them worth the extra money in very short amount of time. -Bob Cunningham
