416 jet help!!!!

[brae5]

ok so i just put in a je 10.8/1 piston with a hot cams stage 2. as of now i do not have a after market pipe on it. my question is what jetting should i go with? should i cut holes in the air box?

[honda400ex2003]

heres my setup. this could get you close. i would check out the jetting threads and compare. i know most people run around a 170 to 175 but there are outliers in the group too. different elevations and temps make a huge difference. i am at 1500 ft. steve

[Gibson]

your jetting shouldn't change when you rebuild the motor. mine didn't at least. i'd just run it for a few minutes at the recommended rpm's for the cam, then check your plug.