i advanced my timing all the way to the head. with the ksb turned of it runs realy strong but when i turn it on from low rpm to high rpm it feels like it almost has a miss, the engine just starts surging could it be to much timing advance or something else
thanks,John

 

Yes, it sounds like you have it bumped a little too far.

 

ok thanks i will have to disconnect my ksb

 

WHY? ...back it down .. Im not gonna help you with the HG replacement!