i had my motor ported,polished along with rest of my mods it was jetted to 290mains and was dead on .i have now gone up to 340s and only have one more move one my needle left .it pulls strong all the way to the top then it kinda just falls off the plug color is not to bad at all but man 340s that just large to me!i guess a set of 350s are in my future. has any one else jetted this large im about 1000ft above sea level i guess.

 

vision:
Yes thats large... but size does not matter(yea right) It all depends on if your plug is the correct color. Up until I went to 35pwk's on my shee I was running anywhere from 380-400 mains and I am at sea level. So dont worry about what size main just worry about not running lean!

walter
88 Banshee 370
95 Dodge Ram 4x4
99 Quadbuddy