I just put on some keihn 35mm pwk carbs and it has a dead spot on the bottom end. If I'm in the power band it does fine at an idle if I punch it it will die or bog out then rev. Mains seem to be fine at 160. pilot is at a 78, air/fuel mix are 1 3/4 out. I am at elevation 2000ft. Does it sound like my pilot is to rich or to lean? thankx

 

When I was runing a 350 on gas I had keihin 30mm pwk's.... Biggest mains I ran were 154....
Now having said that, I think your pilots are to big as well... Try dropping them down a few sizes...
My 350 was ported and I am at 472ft. above sea level......

 

Drop your pilots to a 55. 160 on the mains is about right.

 

Your bog can be caused by one of the following:

-Carbs not in sync
-pilot jet clogged or to small
-Needle to lean

Chris

 

thankx guys I'll fatten up the pilot, if it gets worse I'll drop it to a 55...