There is a seal (IIRC) installed on the accelerator pump shaft and there is an actual tuning chart for the carter in a blow through application (jetting Vs boost) I have yet to find the book I have (form Dick Datsun). It's more of a compilation of stuff, and is not really a 'book' but I remember seeing a section on the Carter used on the 289 CID Stude V8 with the tuning charts and a slick way to adapt the fuel pump (on a Stude) to make it self compensating (because if you are planning on blowing through the carb you will have to boost reference the fuel pressure, as the boost goes up, the fuel pressure must increase by the same amount.
