Originally Posted by b_joannblue

When you install one of my big bore kits (B&B Cycle Restoration) I send a fresh air blockoff plate with the kits. If you seal & install it correct this will stop the deceleration popping in the exhaust. When using the stock carb you need to increase the pilot jet one size larger & two sizes larger on the main jet. these numbers are above the jetting that you were using before installing the 351 kit.