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....
