Best 273 and 318 builds (NO 360's please)

That intake looks cool in terms of workmanship. But if you're out to make power, the workmanship went into making the 4bbl attach. Not power. The runners are flat, the turn from plenum to runner is 90°, and the floor of the plenum is shallow and flat. 90° truns suck. Partially mixed fuel will come out of suspension and puddle in the plenum and the roof becomes a big turbulent mess where typically the best smoothest flow should be. I would say if your intention is to use it, I'd suggest epoxying the center of the floor and shaping it to turn the air better, adding pcs to help divide teh plenum as the ports are entered, add about 1.5" of height to the carb pad and put a much more generous radius on the transition from carb baseplate to port roof. The down side is, you do all that, you still only have a small cross section port. So a smaller engine will need to rev to use it and a larger engine will be out of breath early.