a 2019 edelbrock catalog i have gives a different jetting spec than the website states. i'd verify which i have before making changes. the regular 800avs i have experience with. went from out of the box calibration to .107 primaries, .104 secondaries, 68x47 metering rods. also worked the accellerator pump circut. drives and performs quite well now; a little goofy OOTB.