[miker98038]

I'm far from an expert, but I've had 2 Edelbrock AFB style and one Holley 1850 style tuned to run as blow thru carbs at fairly low boost levels, 5-7 psi in the manifold. We had to look to the secondaries for the enrichment under boost. The primaries took some tuning but for a street car they were too rich with boost, so we ended up really rich on the secondaries. Particularly with the Edelbrocks they always went a bit rich on the top end in order to be ok in the mid range. You might want to contact someone with real experience to see how that plays out on a 2 barrel.