Ok , for what application are these carbs used on , maybe circuit racing? , Holley do not say which application these are best suited , most guys can't use these out the box , most change the metering blocks out for 2 circuit , why don't Holley have any info on there site stating this carb should not be used on a street/strip motor without extensive modifications , i got no issues working the carb to suit my combo , goes a bit far when you have to rework the complete metering system , been there with a mighty demon , ok i got it dialled in ok , but a lot of time & effort involved.

PVs fitted front & rear.