Help with cam selection

Any reason for the 2x4? Just aesthetics? Tunnel ram?

I don't know how manageable a 2x4 is going to be on the street and keep from killing ET, compared to a Dominator or the like single four, double hitter.

I think a good indy manifold port matched with a Dominator will be more well behaved on the street, if you're planning on driving that rig with 3.91's on a 3 speed with no overdrive.

Mid 3300 stall would be choice, but I don't know about those carbs. 1000cfm twins on a street car, yes, it will work, but you'll be hitting every gas station between tracks with that kind of milage and no O/D. Two accelerator pumps and a lot of runners likes WOT.

Look into Dynamic for a converter. They are built differently and help cure cruising slip on a street car.

That would be the first thing I'd look at. The second would be a possible a500, or go rowin gears with a ball top, for road trips.