TylerDC
05-24-2005, 04:30 PM
New headers installed, the top end is defiantly better but I have a flat spot in the 3000-4200 range after that it pulls nicely to 6000. Holly 650 double pumper 72 front 85 back. I am guessing the flat spot is caused by the primary jets being too small. I picked up 78 for the front going to see if that will help. Anyone good on tuning or know what to do to fix the flat spot?