based on efi's input: didn't G.M. put a q-jet on the pontiac ohc 6?..........fats
The Pontiac Sprint 4bbl engine had factory installed spreadbore Q-jet carbs,I even pulled them off those cars from a junkyard.
I just heard they were 650 CFM Q-jets, but I did not think GM made A 650 CFM spreadbore Q-jet.
Maybe the old style squarebore Q-jets were that size?
MBHD