I had a Chev 283 with a Paxton supercharger, the blowers output was fed into the carburetor inlet so the pressurized air went blower to carb. to engine. We used a special fuel pump to feed the carb. so that the blower pressure did not stop the fuel from filling the float chamber, also used a special seal around the carb accelerator pump shaft so that the higher pressure in the carb. did not force fuel out past the accelerator shaft. The vent hole in the float bowl was sealed to outside air also. THis set up worked very well and made that little 283 really run.

WRK