Nitrous Fittings 6an Or 4an Please Explain.

lewis2121

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Oct 23, 2015
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South Texas
I'm going to be installing a nitrous express kit on my naturally aspirated small block foxbody. Going to be starting with a 100 shot. Everything comes with choice of 4an or 6an fittings. Like the purge kit and the kit that comes with the bottle heater and bracket. Can someone explain which one would be best for my application? Thanks
 
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Typically, the 4AN is dedicated to the higher pressure N2o stuff, and the AN 6 stuff is for the lower pressure, higher volume fuel stuff.

But,

if it was a big power system system all of the typical goes out the window.

A street, or mid power system will be as I described. rarely do you see -6 going to nitrous solenoids excepting the bottle feed to a distribution block. I cant imagine why they'd give you an option.
 
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