Theoretically speaking

['68OrangeSunshine]

Originally Posted by Stephen717

Honestly im having a hard time finding a good intake cheap and I would love to have a 3x2 intake on there eventually so for now I'm going to run the single 2 barrel progressive carb on the stock intake with a heated block off plate and eventually either buy a vintage 3x2 intake, buy a 3x1 intake and 2 more 1 to 2 adapters or have a custom 3x2 intake made up. The thought of cutting the holes for 2 more carbs into the stock intake also ran through my mind but I don't know how well that would look or function

Personally, I wouldn't mess with multiple carbs. Too much hassle to tune.
Forty two years ago, I was looking for a way to run a Weber progressively-linked 2V carb [off a Vega] on my (then) freshly-rebuilt 292. I was told it wouldn't have enough CFMs for a .030-over 292.
So I got an Offenhauser 5416 4V intake and a Holley 8005, 390 CFM carb.

When I rebuilt a 292 in 2002-05, the Holley broke down after a 500 mile break-in run, and I went with an Edelbrock 1404 500 CFM 4 barrel.
During rebuild the Offy intake cleaned up with mild bead blasting and worked great on the new engine.

Jegs lists the Ofy 5416 at $351, Summit wants $385. New. But you might luck out on a used one at a swap meet, Craigs-list, or parts board.