A friend of mine has a gorgeous banshee that he has just put a +4 stroker and is currious about how many jet sizes he should go up.

Currently has 380 mains and 27.5 pilots (has pipes pod filters cool head and 20cc domes)
We were looking into going up 4 sizes on the mains and raising the needles and see how that works.

 

290 mains on 4th clip is what my buddy has on his stock carbs but it can depend on where you live and your mods