Dual Quad 318... I used a 273 intake

j par said
Which carbs are they? And are they identical carbs as in the same serial numbers?...

I think they are both 1405 (600 cfm manual choke). One has a "Hamburger" label on the front, the other Edelbrock. You can see it in the video

*Edit - 1406 carbs, would have had electric chokes