I was just going to let it slide but I just can’t.

Who picked that cam? And why the 12 degree split in duration????? That’s way too much exhaust duration. You need maybe 4 degrees split with alcohol and that’s it. You are pissing your power right out the headers. Unless the headers are junk. The size may be a skosh small, maybe. I’d rather see a 4 inch collector on alcohol too but neither of the two can get me to grasp that 12 degree split. That’s insane.


I would call 4 different cam grinders not named Bullet and ask them about a grind for your combo and see how many give you a 12 degree split. The exhaust port on the B1 is more than big enough so that can’t be why all that split.