timing the same for headers set up? lack power?

I agree the '45s are junk.The 1920 is a great carb. They can go bad,but I havent seen any new ones that were 'wacky' like '45s out of the box(new)

I changed the jet,i played with the air bleeds, tuning by seat of the pants and by plugs.Messed with timing etc... The 1 bbl is just simply not enough CFM for the motor any longer after the install of headers. I would even say the bbd and 2280(is that the stock slant 2 bbl holley?) is not enough,but they will work.