economaster carb?

[jimfulco]

They were made by Holley back in the '70s in response to the "fuel crisis". I had one that was marketed as a replacement for a Quadrajet, with two fairly small primary bores, and two equally small secondary bores spread far apart. It was rated at 450cfm, and it definitely choked down the power of the 350 it was mounted on. It didn't stay on long enough for me to see any fuel economy benefits, but I imagine if there was any better mileage, it would likely have been due to the fact that it wouldn't pass nearly as much air as the Q-jet. But aside from the power loss, it ran fine.