Intake Port Tumble

I got those heads but the MP ones based on the 308 castings, forgot the number. Anyhow I run the small port intake, the old Dual Quad intake for the 273 engines. Never dyno it but seem to be making loads of power. The ports are small but short and some are straight to the head. Got both airvalve doors removed from the 500 cfm Carters now, it kicks harder then any Holley 750 dp carb I ever used...no bogs either, I believe the smaller ports help keep the air speed fast