Its been several years, but alot of the 70's and 80's had holly and q-jet. My ole 80 elcamino had a q-jet. Hated that thing, rebuilt the engine in 1996 and had it bored and stroked to a 393. I put an edelbrock 750 on it and took it to the track a few times. Could never get below 13.5 in the quarter. Wish I still had that car/truck...lol