The Rochester QJ with 1 3/8" primary bores. Rated at 750 or 800 cfm, depending on which book you read....
Used on a 1967 Pontiac 230 cu in inline 6 engine....455 Pontiac [ double the cubes ]....500" Cadillac....& heaps of others.
Do you think the QJ air valve on the 230 ever opened? Probably rusted shut from non-use....
Horse crap. Mama had one on a 67 Tempest and Daddy used hit 90 on the way to Fernandina Beach when we went on vacation growing up. That quadrajet would make that big old Poncho hood shake when it opened up. And it DID open. lol